SD-WAN Administrator’s Guide
2.1
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Last Revised
June 3, 2021
2 SD-WAN ADMINISTRATOR’S GUIDE |
Table of Contents
SD-WAN Overview............................................................................................ 5
About SD-WAN........................................................................................................................................... 7
SD-WAN Configuration Elements........................................................................................................ 10
Plan Your SD-WAN Configuration....................................................................................................... 12
Configure SD-WAN..........................................................................................15
Install the SD-WAN Plugin.....................................................................................................................17
Install the SD-WAN Plugin When Panorama is Internet-Connected.............................. 17
Install the SD-WAN Plugin When Panorama is not Internet-Connected....................... 17
Set Up Panorama and Firewalls for SD-WAN...................................................................................19
Add Your SD-WAN Firewalls as Managed Devices............................................................ 19
Create an SD-WAN Network Template.................................................................................20
Create the Predefined Zones in Panorama............................................................................21
Create the SD-WAN Device Groups...................................................................................... 23
Create a Link Tag......................................................................................................................................26
Configure an SD-WAN Interface Profile............................................................................................ 27
Configure a Physical Ethernet Interface for SD-WAN.................................................................... 30
Configure an Aggregate Ethernet Interface and Subinterfaces for SD-WAN............................32
Configure Layer 3 Subinterfaces for SD-WAN................................................................................. 36
Configure a Virtual SD-WAN Interface...............................................................................................38
Create a Default Route to the SD-WAN Interface.......................................................................... 41
Create a Path Quality Profile.................................................................................................................42
Configure SaaS Monitoring.................................................................................................................... 44
Create a SaaS Quality Profile....................................................................................................44
Use Case: Configure SaaS Monitoring for a Branch Firewall............................................ 46
Use Case: Configure a Hub Firewall Failover for SaaS Monitoring from a Branch
Firewall to the Same SaaS Application Destination.............................................................47
Use Case: Configure a Hub Firewall Failover for SaaS Monitoring from a Branch
Firewall to a Different SaaS Application Destination..........................................................50
SD-WAN Traffic Distribution Profiles................................................................................................. 53
Create a Traffic Distribution Profile.....................................................................................................58
Create an Error Correction Profile....................................................................................................... 60
Configure an SD-WAN Policy Rule......................................................................................................63
Allow Direct Internet Access Traffic Failover to MPLS Link..........................................................67
Configure DIA AnyPath...........................................................................................................................68
Distribute Unmatched Sessions............................................................................................................ 74
Add SD-WAN Devices to Panorama................................................................................................... 76
Add an SD-WAN Device............................................................................................................76
Bulk Import Multiple SD-WAN Devices.................................................................................80
Configure HA Devices for SD-WAN................................................................................................... 83
Create a VPN Cluster.............................................................................................................................. 84
Create a Full Mesh VPN Cluster with DDNS Service......................................................................92
Create a Static Route for SD-WAN..................................................................................................... 96
Monitoring and Reporting.............................................................................. 99
Monitor SD-WAN Tasks.......................................................................................................................101
Monitor SD-WAN Application and Link Performance.................................................................. 103
Generate an SD-WAN Report............................................................................................................ 107
TABLE OF CONTENTS
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Troubleshooting.............................................................................................. 109
Use CLI Commands for SD-WAN Tasks.......................................................................................... 111
Troubleshoot App Performance..........................................................................................................114
Troubleshoot Link Performance......................................................................................................... 118
Upgrade your SD-WAN Firewalls...................................................................................................... 122
Upgrade the SD-WAN Plugin............................................................................................................. 123
Uninstall the SD-WAN Plugin............................................................................................................. 124
iv TABLE OF CONTENTS
SD-WAN Overview
Learn about SD-WAN and plan your configuration to ensure a successful deployment.
> About SD-WAN
> SD-WAN Configuration Elements
> Plan Your SD-WAN Configuration
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6 SD-WAN ADMINISTRATOR’S GUIDE | SD-WAN Overview
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About SD-WAN
Software-Defined Wide Area Network (SD-WAN) is a technology that allows you to use multiple internet
and private services to create an intelligent and dynamic WAN, which helps lower costs and maximize
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application quality and usability. Beginning with PAN-OS 9.1, Palo Alto Networks offers strong security
with an SD-WAN overlay in a single management system. Instead of using costly and time-consuming MPLS
with components such as routers, firewalls, WAN path controllers, and WAN optimizers to connect your
WAN to the internet, SD-WAN on a Palo Alto Networks firewall allows you to use less expensive internet
services and fewer pieces of equipment. You don’t need to purchase and maintain other WAN components.
• PAN-OS Security with SD-WAN Functionality
• SD-WAN Link and Firewall Support
• Centralized Management
PAN-OS Security with SD-WAN Functionality
The SD-WAN plugin is integrated with PAN-OS, so that you get the security features of a PAN-OS firewall
and SD-WAN functionality from a single vendor. The SD-WAN overlay supports dynamic, intelligent path
selection based on applications and services and the conditions of links that each application or service is
allowed to use. The path health monitoring for each link includes latency, jitter, and packet loss. Granular
application and service controls allow you to prioritize applications based on whether the application is
mission-critical, latency-sensitive, or meets certain health criteria, for example. Dynamic path selection
avoids brownout and node failure problems because sessions fail over to a better performing path in less
than one second.
The SD-WAN overlay works with all PAN-OS security features, such as User-ID™ and App-ID™, to provide
complete security control to branch offices. The full suite of App-ID capabilities (App-ID decoder, AppID cache, and source/destination external dynamic list [EDL] IP address lists) identifies applications for
application-based control of SD-WAN traffic. You can deploy the firewall with Zero Trust segmentation
of traffic. You can configure and manage SD-WAN centrally from the Panorama web interface or the
Panorama REST API.
You may have cloud-based services and instead of having your internet traffic flow from branches to the
hub to the cloud, you want the internet traffic to flow directly from branches to the cloud using a directly
connected ISP. Such access from a branch to the internet is Direct Internet Access (DIA). You don’t need
to spend your hub bandwidth and money on internet traffic. The branch firewall is already doing security,
so you don’t need the hub firewall to enforce security on internet traffic. Use DIA on branches for SaaS,
web browsing, or heavy-bandwidth applications that shouldn’t be backhauled to a hub. The following figure
illustrates a DIA virtual interface consisting of three links from the branch to the cloud. The figure also
illustrates a VPN tunnel virtual interface consisting of four links that connect the branch to the hub at the
headquarters.
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SD-WAN Link and Firewall Support
Link bundling allows you to group multiple physical links (that different ISPs use to communicate with the
same destination) into a virtual SD-WAN interface. On the basis of applications and services, the firewall
chooses from the links (path selection) for session load sharing and to provide failover protection in the
event of a brownout or blackout. Thus you are providing the application with the best quality performance.
The firewall automatically performs session load sharing over the links in a virtual SD-WAN interface to use
available bandwidth advantageously. An SD-WAN interface must have all of the same type of connection
(either DIA or VPN). VPN links support the hub-and-spoke topology.
SD-WAN supports the following types of WAN connections: ADSL/DSL, cable modem, Ethernet, fiber,
LTE/3G/4G/5G, MPLS, microwave/radio, satellite, WiFi, and anything that terminates as Ethernet to the
firewall’s interface. You decide the appropriate strategy for how to use the links. You could use inexpensive
broadband connections before expensive MPLS or LTE connections. Alternatively, you could use specific
VPN tunnels to reach specific hubs in a region.
The following firewall models support SD-WAN software capabilities:
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PA-220
PA-220R
PA-400 Series
PA-820
PA-850
PA-3200 Series
PA-5200 Series
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PA-5400 Series
PA-7000 Series
VM-50
VM-100
VM-300
VM-500
VM-700
If you are a new customer purchasing a Palo Alto Networks next-generation firewall, you will use the
default virtual router for SD-WAN. If you are an existing customer, you can choose to either let PAN-OS
overwrite any existing virtual routers or use a new virtual router and new zones for SD-WAN to keep SDWAN content separate from your pre-existing configuration.
Centralized Management
Panorama™ provides the means to configure and manage SD-WAN, which makes configuring multiple
options on many geographically-dispersed firewalls much faster and easier than configuring firewalls
individually. You can change network configurations from a single location rather than configuring each
firewall individually. Auto VPN configuration allows Panorama to configure branches and hubs with secure
IKE/IPSec connections. A VPN cluster defines the hubs and branches that communicate with each other in
a geographic region. The firewall uses VPN tunnels for path health monitoring between a branch and a hub
to provide subsecond detection of brownout conditions.
The Panorama dashboard provides visibility into your SD-WAN links and performance so that you can
adjust path quality thresholds and other aspects of SD-WAN to improve its performance. Centralized
statistics and reporting include application and link performance statistics, path health measurements and
trend analysis, and focused views of application and link issues.
Begin by understanding your SD-WAN use case, then review the SD-WAN configuration elements, traffic
distribution methods, and plan your SD-WAN configuration. To greatly accelerate the configuration, the
best practice is for you to export an empty SD-WAN device CSV and enter information such as branch
office IP address, the virtual router to use, the firewall site name, zones to which the firewall belongs, and
BGP route information. Panorama uses the CSV file to configure the SD-WAN hubs and branches and to
automatically provision VPN tunnels between hubs and branches. SD-WAN supports dynamic routing
through eBGP and is configured using Panorama’s SD-WAN plugin to allow all branches to communicate
with the hub only or with the hub and other branches.
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SD-WAN Configuration Elements
The elements of an SD-WAN configuration work together, allowing you to:
• Group physical Ethernet interfaces that share a common destination into a logical SD-WAN interface.
• Specify link speeds.
• Specify the thresholds at which a deteriorating path (or brownout or blackout) to an SD-WAN warrants
selecting a new best path.
• Specify the method of selecting that new best path.
This view indicates the relationships between elements at a glance.
The goal of an SD-WAN configuration is to control which links your traffic takes by specifying the VPN
tunnels or direct internet access (DIA) that certain applications or services take from a branch to a hub or
from a branch to the internet. You group paths so that if one path deteriorates, the firewall selects a new
best path.
• A Tag name of your choice identifies a link; you apply the Tag to the link (interface) by applying an
Interface Profile to the interface, as the red arrow indicates. A link can have only one Tag. The two
yellow arrows indicate that a Tag is referenced in the Interface Profile and the Traffic Distribution
profile. Tags allow you to control the order that interfaces are used for traffic distribution. Tags allow
Panorama to systematically configure many firewall interfaces with SD-WAN functionality.
• An SD-WAN Interface Profile specifies the Tag that you apply to the physical interface, and also
specifies the type of Link that interface is (ADSL/DSL, cable modem, Ethernet, fiber, LTE/3G/4G/5G,
MPLS, microwave/radio, satellite, WiFi, or other). The Interface Profile is also where you specify the
maximum upload and download speeds (in Mbps) of the ISP’s connection. You can also change whether
the firewall monitors the path frequently or not; the firewall monitors link types appropriately by default.
• A Layer3 Ethernet Interface with an IPv4 address can support SD-WAN functionalities. You apply an
SD-WAN Interface Profile to this interface (red arrow) to indicate the characteristics of the interface.
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The blue arrow indicates that physical Interfaces are referenced and grouped in a virtual SD-WAN
Interface.
A virtual SD-WAN Interface is a VPN tunnel or DIA group of one or more interfaces that constitute a
numbered, virtual SD-WAN Interface to which you can route traffic. The paths belonging to an SD-WAN
Interface all go to the same destination WAN and are all the same type (either DIA or VPN tunnel). (Tag
A and Tag B indicate that physical interfaces for the virtual interface can have different tags.)
A Path Quality Profile specifies maximum latency, jitter, and packet loss thresholds. Exceeding a
threshold indicates that the path has deteriorated and the firewall needs to select a new path to
the target. A sensitivity setting of high, medium, or low lets you indicate to the firewall which path
monitoring parameter is more important for the applications to which the profile applies. The green
arrow indicates that you reference a Path Quality Profile in one or more SD-WAN Policy Rules; thus,
you can specify different thresholds for rules applied to packets having different applications, services,
sources, destinations, zones, and users.
A Traffic Distribution Profile specifies how the firewall determines a new best path if the current
preferred path exceeds a path quality threshold. You specify which Tags the distribution method uses to
narrow its selection of a new path; hence, the yellow arrow points from Tags to the Traffic Distribution
profile. A Traffic Distribution profile specifies the distribution method for the rule.
The preceding elements come together in SD-WAN Policy Rules. The purple arrow indicates that
you reference a Path Qualify Profile and a Traffic Distribution profile in a rule, along with packet
applications/services, sources, destinations, and users to specifically indicate when and how the firewall
performs application-based SD-WAN path selection for a packet not belonging to a session. (You can
also reference a SaaS Quality Profile and an Error Correction Profile in an SD-WAN policy rule.)
Now that you understand the relationship between the elements, review the traffic distribution methods
and then Plan Your SD-WAN Configuration.
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Plan Your SD-WAN Configuration
Plan the complete topology of your SD-WAN-enabled branch and hub firewall interfaces so that you can
create Panorama™ templates with CSV files and then push the configurations to the firewalls.
STEP 1 | Plan the branch and hub locations, link requirements, and IP addresses. From Panorama you
will export an empty SD-WAN device CSV and populate it with branch and hub information.
1. Decide the role of each firewall (branch or hub).
2. Determine which branches will communicate with which hubs; each functional group of branch and
hub firewalls that communicate with each other is a VPN cluster. For example, your VPN clusters
might be organized geographically or by function.
3. Determine the ISP link types that each branch and hub support: ADSL/DSL, cable modem, Ethernet,
fiber, LTE/3G/4G/5G, MPLS, microwave/radio, satellite, and WiFi.
4. Determine the maximum download and upload bandwidth (Mbps) that the link types support and
how you want to apply these speed controls to links, as described in Step 2. Record the ISP link’s
maximum download and upload bandwidth (Mbps). This information will serve as reference egress
maximums if you need to configure QoS to control the application bandwidth.
5. Gather the public IP addresses of branch firewalls, whether they are static or dynamically assigned.
The firewall must have an internet-routable, public IP address so it can initiate and terminate IPSec
tunnels and route application traffic to and from the internet.
The ISP’s customer premise equipment must be directly connected to the Ethernet
interface on the firewall.
If you have a device that performs NAT located between the branch firewall and the
hub, the NAT device can prevent the firewall from bringing up IKE peering and IPSec
tunnels. If the tunnel fails, work with the administrator of the remote NAT device to
resolve the issue.
6. Gather the private network prefixes and serial numbers of branch and hub firewalls.
7. Decide the link type of each firewall interface.
Allocate the same link types on the same Ethernet interfaces across the branch
firewalls to make configuration easier. For example, Ethernet1/1 is always cable
modem.
8. Decide on the naming conventions for your sites and SD-WAN devices.
Do not use the simple hostnames “hub” or “branch” because Auto VPN configuration
uses these keywords to generate various configuration elements.
9. If you already have zones in place before configuring SD-WAN, decide how to map those zones
to the predefined zones that SD-WAN uses for path selection. You will map existing zones to the
predefined zones named zone-internal, zone-to-hub, zone-to-branch, and zone-internet.
Information you will enter into a CSV (so that you can add multiple SD-WAN devices
at once) includes: serial number, type of device (branch or hub), names of zones
to map to predefined zones (pre-existing customers), loopback address, prefixes to
redistribute, AS number, router ID, and virtual router name.
STEP 2 | Plan link bundles and VPN security for private links.
A link bundle lets you combine multiple physical links into one virtual SD-WAN interface for purposes of
path selection and failover protection. By having a bundle of more than one physical link, you maximize
application quality in case a physical link deteriorates. You create a bundle by applying the same link tag
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to multiple links (via an SD-WAN Interface Profile). The link tag identifies a bundle of links that have a
similar type of access and similar type of SD-WAN policy handling. For example, you can create a link tag
named low cost broadband and include the cable modem and fiber broadband services.
STEP 3 | Identify the applications that will use SD-WAN and QoS optimization.
1. Identify the critical and the latency-sensitive business applications for which you will provide SDWAN control and policies. These are applications that require a good user experience, and are likely
to fail under poor link conditions.
Start with the most critical and latency-sensitive applications; you can add applications
after SD-WAN is functioning smoothly.
2. Identify the applications that require QoS policies so you can prioritize bandwidth. These should be
the same applications you identified as critical or latency-sensitive.
Start with the most critical and latency-sensitive applications; you can add applications
after SD-WAN is functioning smoothly.
STEP 4 | Determine when and how you want links to fail over to a different link in the event the original
link degrades or fails.
1. Decide on the path monitoring mode for a link, although the best practice is to retain the default
setting for the link type:
• Aggressive—The firewall sends probe packets to the opposite end of the SD-WAN link at a
constant frequency (five probes per second by default). Aggressive mode is appropriate for links
where monitoring path quality is critical; where you need fast detection and failover for brownout
and blackout conditions. Aggressive mode provides subsecond detection and failover.
• Relaxed—The firewall observes a configurable idle time between sending probe packets for seven
seconds (at the probe frequency you configure), which makes path monitoring less frequent than
aggressive mode. Relaxed mode is appropriate for links that have very low bandwidth, links that
are expensive to operate, such as satellite or LTE, or when fast detection isn’t as important as
preserving cost and bandwidth.
2. Prioritize the order in which the firewall selects the first link for a new session and the order in which
links should be a candidate to replace a link that is failing over, if there is more than one candidate.
For example, if you want an expensive backup LTE link to be the last link used (only when the
inexpensive broadband links are oversubscribed or completely down), then use the Top Down
Priority traffic distribution method and place the tag that is on the LTE link last in the list of tags for
the Traffic Distribution profile.
3. For the applications and services, determine the path health thresholds at which you consider a
path to have degraded enough in quality that you want the firewall to select a new path (fail over).
The quality characteristics are latency (range is 10 to 2,000 ms), jitter (range is 10 to 1,000 ms), and
packet loss percentage.
These thresholds constitute a Path Quality profile, which you reference in an SD-WAN policy rule.
When any single threshold (for packet loss, jitter, or latency) is exceeded (and the remaining rule
criteria are met), the firewall chooses a new preferred path for the matching traffic. For example, you
can create Path Quality profile AAA with latency/jitter/packet loss thresholds of 1000/800/10 to use
in Rule 1 when FTP packets come from source zone XYZ, and create Path Quality profile BBB (with
thresholds of 50/200/5) to use in Rule 2 when FTP packets come from source IP address 10.1.2.3.
Best practice is to start with high thresholds and test how the application tolerates them. If you set
the values too low, the application may switch paths too frequently.
Consider whether the applications and services you are using are especially sensitive to latency, jitter,
or packet loss. For example, a video application might have good buffering that mitigates latency
and jitter, but would be sensitive to packet loss, which impacts the user experience. You can set
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the sensitivity of the path quality parameters in the profile to high, medium or low. If the sensitivity
settings for latency, jitter, and packet loss are the same, the firewall examines the parameters in the
order of packet loss, latency, jitter.
4. Decide if there are links among which to load share new sessions for an application or service.
STEP 5 | Plan the BGP configurations that Panorama will push to branches and hubs to dynamically
route traffic between them.
1. Plan BGP route information, including a four-byte autonomous system number (ASN). Each firewall
site is in a separate AS and therefore must have a unique ASN. Each firewall must also have a unique
Router ID.
2. Before implementing SD-WAN with BGP routing in an environment where BGP is already in use,
ensure that the BGP configuration generated by the SD-WAN plugin doesn’t conflict with your
existing BGP configuration. For example, you must use the existing BGP AS number and router ID
values for the corresponding SD-WAN device values.
3. If you don’t want to use BGP dynamic routing, plan to use Panorama’s network configuration features
to push out other routing configurations. You can do static routing between the branch and hubs.
Simply omit all of the BGP information in the Panorama plugin and use normal virtual router static
routes to perform static routing.
STEP 6 | Consider the capacities of firewall models for virtual SD-WAN interfaces, SD-WAN policy
rules, log size, IPSec tunnels (including proxy IDs), IKE peers, BGP and static route tables, BGP
routing peers, and performance for your firewall mode (App-ID™, threat, IPSec, decryption).
Ensure the branch and hub firewall models you intend to use support the capacities you
require.
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Configure SD-WAN
After you Plan Your SD-WAN Configuration, install the SD-WAN plugin and set up the
Panorama™ management server to centrally manage the SD-WAN configuration of your hub
and branch firewalls. By leveraging Panorama, you reduce the management requirements
and operational overhead for administrating your SD-WAN deployment, and can more easily
monitor your link health and troubleshoot issues should they arise.
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Install the SD-WAN Plugin
Set Up Panorama and Firewalls for SD-WAN
Create a Link Tag
Configure an SD-WAN Interface Profile
Configure a Physical Ethernet Interface for SD-WAN
(Optional) Configure an Aggregate Ethernet Interface and Subinterfaces for SD-WAN
(Optional) Configure Layer 3 Subinterfaces for SD-WAN
Configure a Virtual SD-WAN Interface
Create a Default Route to the SD-WAN Interface
Create a Path Quality Profile
Configure SaaS Monitoring
SD-WAN Traffic Distribution Profiles
Create a Traffic Distribution Profile
Create an Error Correction Profile
Configure an SD-WAN Policy Rule
Allow Direct Internet Access Traffic Failover to MPLS Link
Configure DIA AnyPath
Distribute Unmatched Sessions
Add SD-WAN Devices to Panorama
(Optional) Configure HA Devices for SD-WAN
Create a VPN Cluster
Create a Full Mesh VPN Cluster with DDNS Service
(Optional) Create a Static Route for SD-WAN
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Install the SD-WAN Plugin
A Panorama™ management server with an SD-WAN plugin is required to configure and manage an SDWAN deployment. If your Panorama is internet-connected, you download the SD-WAN plugin directly from
Panorama and install it on the Panorama management server. If your Panorama is not internet-connected,
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you download the SD-WAN plugin from the Palo Alto Networks Customer Support Portal and install it on
the Panorama management server.
• Install the SD-WAN Plugin When Panorama is Internet-Connected
• Install the SD-WAN Plugin When Panorama is not Internet-Connected
Install the SD-WAN Plugin When Panorama is Internet-Connected
A Panorama™ management server with an SD-WAN plugin installed is required to configure and manage
an SD-WAN deployment. When Panorama is connected to the internet, you download and install the
SD-WAN plugin directly from the Panorama web interface. The plugin needs to be installed only on the
Panorama managing your SD-WAN firewalls, and not on the individual hub and branch firewalls.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Panorama > Plugins, search for the sd_wan plugin and Check Now for the most recent
version of the plugin.
STEP 3 | Download and Install the SD-WAN plugin.
STEP 4 | After you successfully install the SD-WAN plugin, select Commit and Commit to Panorama.
This step is required before you can commit any configuration changes to Panorama.
STEP 5 | Continue to Set Up Panorama and Firewalls for SD-WAN to begin configuring your SD-WAN
deployment.
Install the SD-WAN Plugin When Panorama is not InternetConnected
A Panorama™ management server with an SD-WAN plugin is required to configure and manage an SDWAN deployment. When Panorama is not connected to the internet, you must download the SD-WAN
plugin from the Palo Alto Networks Customer Support Portal and upload the plugin to Panorama. The
plugin needs to be installed only on the Panorama managing your SD-WAN firewalls, and not on the
individual hub and branch firewalls.
STEP 1 | Log in to the Palo Alto Networks Customer Support Portal.
STEP 2 | Select Updates > Software Updates, and in the Filter By drop-down select Panorama
Integration Plug In.
STEP 3 | Locate and download the SD-WAN Plug-in.
STEP 4 | Log in to the Panorama Web Interface.
STEP 5 | Select Panorama > Plugins and Upload the SD-WAN plugin.
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STEP 6 | Browse and locate the SD-WAN plugin you downloaded from the Customer Support Portal
and click OK.
STEP 7 | Install the SD-WAN plugin.
STEP 8 | After you successfully install the SD-WAN plugin, select Commit and Commit to Panorama.
This step is required before you can commit any configuration changes to Panorama.
STEP 9 | Continue to Set Up Panorama and Firewalls for SD-WAN to begin configuring your SD-WAN
deployment.
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Set Up Panorama and Firewalls for SD-WAN
Before you can begin configuring your SD-WAN deployment, you must add your hub and branch firewalls
as managed devices, and create the necessary templates and device group configurations to successfully
push your SD-WAN configuration to SD-WAN firewalls.
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Add Your SD-WAN Firewalls as Managed Devices
Create an SD-WAN Network Template
Create the Predefined Zones in Panorama
Create the SD-WAN Device Groups
Add Your SD-WAN Firewalls as Managed Devices
Before you can begin configuring your SD-WAN deployment, you must first Install the SD-WAN Plugin
and add your hub and branch firewalls as managed devices to the Panorama™ management server. As part
of adding your SD-WAN firewall as a managed device on the Panorama™ management server, you must
activate the SD-WAN license to enable SD-WAN functionality for the firewall.
As part of adding your SD-WAN firewalls as managed devices, you must configure your managed firewalls
to forward logs to Panorama. Panorama collects information from multiple sources, such as configuration
logs, traffic logs, and link characteristic measurements, to generate the visibility for SD-WAN application
and link health information.
STEP 1 | Launch the Firewall Web Interface.
STEP 2 | Activate your SD-WAN license to enable SD-WAN functionality on the firewall.
Each firewall you intend to use in your SD-WAN deployment requires a unique auth code to activate the
license. For example, if you have 100 firewalls, you must purchase 100 SD-WAN licenses and activate
each SD-WAN license on each firewall using one of the 100 unique auth codes.
For VM-Series firewalls, you apply the SD-WAN auth code against the specific VM-Series
firewall. If you deactivate the VM-Series firewall, the SD-WAN auth code can be activated
on a different VM-Series firewall of the same model.
Ensure that your SD-WAN license remains valid to continue leveraging SD-WAN. If the
SD-WAN license expires, the following occurs:
•
•
•
•
•
•
•
•
A warning displays when you Commit any configuration changes but no commit failure
occurs.
Your SD-WAN configuration no longer functions but is not deleted.
Firewalls no longer monitor and gather link health metrics and stop sending monitoring
probes.
Firewalls no longer send app and link health metrics to Panorama.
SD-WAN path selection logic is disabled.
New sessions round robin on the virtual SD-WAN interface.
Existing sessions remain on the specific link they were on when the license expired.
If an internet outage occurs, traffic follows using standard routing and ECMP if
configured.
STEP 3 | Add the Panorama IP address to the firewall.
1. Select Device > Setup > Management and edit the Panorama Settings.
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2. Enter the Panorama IP address in the first field.
The Panorama FQDN is not supported for SD-WAN.
3. (Optional) If you have set up a high availability (HA) pair in Panorama, enter the IP address of the
secondary Panorama in the second field.
4. Verify that you Enable pushing device monitoring data to Panorama.
5. Click OK.
6. Commit your changes.
STEP 4 | Configure log forwarding to Panorama.
Forwarding logs from your SD-WAN firewalls to Panorama is required to display Monitoring and
Reporting data.
By default, HTTP/2 inspection is automatically enabled if decryption is enabled for
application traffic. The parent sessions using a HTTP/2 connection does not generate any
traffic logs because they do not carry any application traffic. However, the child sessions
generated by the streams within the HTTP/2 parent session still generate traffic logs. For
more information on viewing logs for HTTP/2 connections, see the Palo Alto Networks
Knowledgebase.
STEP 5 | Add one or more firewalls to Panorama.
For more details about adding firewalls to Panorama, see Add a Firewall as a Managed Device.
1.
2.
3.
4.
Log in to the Panorama Web Interface.
Select Panorama > Managed Devices > Summary and Add the firewall(s).
Enter the serial number(s) of the firewalls.
If you are adding firewalls when the required device groups and templates are already created, enable
(check) Associate Devices to assign new firewalls to the appropriate device groups and template
stack.
5. To add multiple firewalls using a CSV, click Import and Download Sample CSV to populate with the
firewall information, and then Browse to import the firewalls.
6. Click OK.
STEP 6 | Select Commit and Commit and Push your configuration.
STEP 7 | Repeat Steps 2 through 5 on each firewall you intend to use in your SD-WAN deployment.
Create an SD-WAN Network Template
Create a template containing all the networking configuration objects for your SD-WAN hubs and branches.
You must create a separate template and template stack for your hub firewalls and a separate template
and template stack for your branch firewalls. It is a best practice to limit the number of templates and
template stacks used to manage your SD-WAN device configuration. Limiting the number of templates and
template stacks used across all hubs and branches greatly reduces the operational overhead of managing
the configurations of multiple SD-WAN hubs and branches. Use template or template stack variables to
help reduce the number of templates used.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Create the SD-WAN hub network template.
1. Select Panorama > Templates and Add a new template.
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2. Enter a descriptive Name for the template.
3. (Optional) Enter a Description for the template.
4. Click OK to save your configuration changes.
STEP 3 | Create a hub template stack.
1.
2.
3.
4.
5.
6.
Select Panorama > Templates and click Add Stack to add a new template stack.
Enter a descriptive Name for the template stack.
(Optional) Enter a Description for the template.
Add the SD-WAN network template you created in the Step 2.
In the Devices section, select the check boxes for all your SD-WAN hub firewalls.
Click OK to save your configuration changes.
STEP 4 | Create the SD-WAN branch network template.
1.
2.
3.
4.
Add a new template.
Enter a descriptive Name for the template.
(Optional) Enter a Description for the template.
Click OK to save your configuration changes.
STEP 5 | Create a branch template stack.
1.
2.
3.
4.
5.
6.
Click Add Stack to add a new template stack.
Enter a descriptive Name for the template stack.
(Optional) Enter a Description for the template.
Add the SD-WAN network template you created in the Step 4.
In the Devices section, select the check boxes for all your SD-WAN branch firewalls.
Click OK to save your configuration changes.
STEP 6 | Commit your configuration changes.
Create the Predefined Zones in Panorama
SD-WAN policy rules use predefined zones for internal path selection and traffic forwarding purposes.
There are two use cases; your use case depends on whether you are enabling SD-WAN on your current
®
PAN-OS firewalls that have existing security policy rules or whether you are starting a brand new PANOS deployment with no previous security policy rules. If your current firewalls have security policy rules in
place, you map your existing zones to the predefined zones that SD-WAN policies use.
The SD-WAN engine makes use of the predefined zones for forwarding traffic. Additionally, creating the
predefined zones in the Panorama™ templates provides consistent visibility between the managed firewalls
and Panorama:
• Zone Internet—For traffic going to and coming from the untrusted internet.
• Zone to Hub—For traffic going from branch firewalls to hub firewalls and for traffic going between hub
firewalls.
• Zone to Branch—For traffic going from hub firewalls to branch firewalls and for traffic between branch
firewalls.
• Zone Internal—For internal traffic at a specific location.
If you don’t create the predefined zones, the SD-WAN plugin will automatically create the
predefined zones on your branch and hub firewall, but you won’t see them in Panorama.
There are two main use cases for predefined zones:
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• Existing Zones—You already have pre-existing zones that you created for use in User-ID™ or various
policies (security policy rules, QoS policy rules, zone protection, and packet buffer protection). You must
map the pre-existing zones to the predefined zones that SD-WAN uses so the firewall can properly
forward traffic. You should continue to use your pre-existing zones in all of your policies because the
new predefined zones are used only for SD-WAN forwarding. You will map the zones when you to Add
SD-WAN Devices to Panorama by creating your CSV file. (If you aren’t using a CSV file, you will map
zones when you configure Panorama > SD-WAN > Devices and add existing zones to Zone Internet,
Zone to Hub, Zone to Branch, and Zone Internal.)
The result of mapping is that a branch or hub firewall can do a forwarding lookup to determine the
egress SD-WAN interface and thus the egress zone. If you don’t map pre-existing zones to predefined
zones, an allowed session won’t use SD-WAN. The mapping is necessary because existing customers
have different zone names in place, and the firewall must narrow all of those zone names down to
the predefined zones. You don’t necessarily have to map zones to all of the predefined zones, but you
should map existing zones to at least the Zone to Hub and Zone to Branch zones.
• No Existing Zones—You have a brand new deployment of Palo Alto Networks® firewalls and SD-WAN.
In this case, you don’t have zones to map; we recommend you use the predefined zones in your PAN-OS
policies and User-ID to simplify deployment.
Before you begin configuring your SD-WAN deployment, for both use cases, you will create the required
predefined zones in Panorama named zone-internet, zone-internal, zone-to-hub, and zoneto-branch. When you onboard your branch and hub firewalls, you will Add SD-WAN Devices to
Panorama. For pre-existing customers, the SD-WAN plugin will internally map pre-existing zones with these
predefined zones when executing SD-WAN policy rules, QoS policy rules, zone protection, User-ID, and
packet buffer protection, and will use the predefined zones for zone logging and visibility in Panorama. For
new customers, you are properly set up using the predefined zones.
The predefined zones are also required in order to automatically set up VPN tunnels between your SDWAN hubs and branches when you push the configuration from Panorama to your managed SD-WAN
devices.
The zone names are case-sensitive and must match the names provided in this procedure.
Your commit fails on the firewall if the zone names don’t match those described in this
procedure.
In this example, we are creating the zone named zone-internet.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Network > Zones and in the Template context drop-down, select the network template
you previously created.
STEP 3 | Add a new zone.
STEP 4 | Enter zone-internet, for example, as the Name of the zone.
STEP 5 | For zone Type, select Layer3.
STEP 6 | Click OK.
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STEP 7 | Repeat the previous steps to create the remaining zones. In total, you must create the
following zones:
•
•
•
•
zone-to-branch
zone-to-hub
zone-internal
zone-internet
STEP 8 | Commit and Commit and Push your configuration changes.
STEP 9 | Commit your changes.
Create the SD-WAN Device Groups
Create device groups, one for your hubs and one for your branches, containing all the policy rules and
configuration objects for your SD-WAN hubs and branches. After you create the device groups for your
hubs and branches, you must create a Security policy rule in each device group allowing traffic between
the hub and branch zones. Creating these Security policy rules ensures that traffic between the SD-WAN
device zones is allowed when the SD-WAN plugin creates the VPN tunnels after you create a VPN cluster.
Configure identical configurations across your hub firewalls and an identical configuration
across your branch firewalls. This greatly reduces the operational overhead of having to
manage the configurations of multiple SD-WAN hubs and branches, and allows you to
troubleshoot, isolate, update configuration issues much more rapidly.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Create the Predefined Zones in Panorama.
STEP 3 | Create the SD-WAN hub device group.
1.
2.
3.
4.
Select Panorama > Device Groups and Add a device group.
Enter SD-WAN_Hub as the Name for the device group.
(Optional) Enter a Description for the template.
In the Devices section, select the check boxes to assign the SD-WAN hubs to the group.
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5. For the Parent Device Group, select Shared.
6. Click OK.
STEP 4 | Create the SD-WAN branch device group.
1.
2.
3.
4.
5.
6.
Select Panorama > Device Groups and Add a device group.
Enter SD-WAN_Branch as the Name for the device group.
(Optional) Enter a Description for the template.
In the Devices section, select the check boxes to assign the SD-WAN branches to the group.
For the Parent Device Group, select Shared.
Click OK.
STEP 5 | Create a Security policy rule to control traffic flows from branch offices to the hub’s internal
zone and from the hub’s internal zone to branch offices.
1. Select Policies > Security and in the Device Group context drop-down, select the SD-WAN_Hub
device group.
2. Add a new policy rule.
3. Enter a Name for the policy rule, such as SD-WAN access--hub DG.
4. Select Source > Source Zone and Add the zone-internal and zone-to-branch.
5. Select Destination > Destination Zone and Add the zone-internal and zone-to-branch.
6. Select Application and Add applications to allow.
You must allow BGP if you are using BGP routing.
7. Select Actions and Allow to allow the applications you selected.
8. Select Target and specify the target devices to which Panorama™ should push this rule.
STEP 6 | Create a Security policy rule to control traffic originating from the branch offices’ internal zone
to the hub and from the hub to the branch offices’ internal zone.
1. Select Policies > Security and in the Device Group context drop-down, select the SD-WAN_Branch
device group.
2. Add a new policy rule.
3. Enter a Name for the policy rule, such as SD-WAN access--branch DG.
4. Select Source > Source Zone and Add the zone-internal and zone-to-hub.
5. Select Destination > Destination Zone and Add the zone-internal and zone-to-hub.
6. Select Application and Add applications to allow.
You must allow BGP if you are using BGP routing.
7. Select Actions and Allow to allow the applications you selected.
8. Select Target and specify the target devices to which Panorama should push this rule.
STEP 7 | Commit and push your configuration.
1.
2.
3.
4.
Commit and Commit and Push your configuration changes.
In the Push Scope section, click Edit Selections.
Enable (check) Include Device and Network Templates and click OK.
Commit and Push your configuration changes.
There are two commit operations that are automatically performed when you commit
and push the device group and template configuration. View the Tasks to verify that
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the second commit is successful. Of these two commit operations, the first always
fails.
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Create a Link Tag
Create a link tag to identify one or more physical links that you want applications and services to use in a
specific order during SD-WAN traffic distribution and failover protection. Grouping multiple physical links
allows you to maximize the application and service quality if the physical link health deteriorates.
When planning how to group your links, consider the use or purpose of the links and group them
accordingly. For example, if you are configuring links intended for low-cost or non-business-critical traffic,
create a link tag and group these interfaces together to ensure that the intended traffic flows primarily on
these links, and not on more expensive links that may impact business-critical applications or services.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Objects > Tags and select the appropriate device group from the Device Group context
drop-down.
STEP 3 | Add a new tag.
STEP 4 | Enter a descriptive Name for the tag. For example; Low Cost Paths, Expensive Paths, General
Access, Private HQ, or Backup.
STEP 5 | Enable (check) Shared to make the Link Tag available to all device groups on the Panorama™
management server and to every virtual system (vsys) on any multi-vsys hub or branch that you
push to.
By configuring a Shared Link Tag, Panorama is able to reference the Link Tags in the firewall
configuration validation and successfully commits and pushes the configuration to branches and hubs.
The commit fails if Panorama is unable to reference a Link Tag.
STEP 6 | (Optional) Select a Color for the tag.
STEP 7 | Enter helpful Comments about the tag. For example, Group two low cost broadband
links and a backup link for general access to the internet.
STEP 8 | Click OK to save your configuration changes.
STEP 9 | Commit and Commit and Push your configuration changes.
STEP 10 | Configure an SD-WAN Interface Profile.
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Configure an SD-WAN Interface Profile
Create an SD-WAN interface profile to define the characteristics of ISP connections and to specify the
speed of links and how frequently the firewall monitors the link, and specify a Link Tag for the link. When
you specify the same Link Tag on multiple links, you are grouping (bundling) those physical links into a link
bundle or fat pipe. You must configure an SD-WAN interface profile and specify it for an Ethernet interface
enabled with SD-WAN before you can save the Ethernet interface.
Group links based on a common criterion. For example, group links by path preference from
most preferred to least preferred, or group links by cost.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Network > Network Profiles > SD-WAN Interface Profile and select the appropriate
template from the Template context drop-down.
STEP 3 | Add an SD-WAN interface profile.
STEP 4 | Enter a user-friendly Name for the SD-WAN interface profile, which you’ll see in reporting,
troubleshooting, and statistics.
STEP 5 | Select the vsys Location if you have a multi-vsys Panorama™ management server. By default,
vsys1 is selected.
STEP 6 | Select the Link Tag that this profile will assign to the interface.
STEP 7 | Add a Description for the profile.
STEP 8 | Select the physical Link Type from the predefined list (ADSL/DSL, Cable modem, Ethernet,
Fiber, LTE/3G/4G/5G, MPLS, Microwave/Radio, Satellite, WiFi, or Other). The firewall
can support any CPE device that terminates and hands off as an Ethernet connection to the
firewall; for example, WiFi access points, LTE modems, laser/microwave CPEs all can terminate
with an Ethernet handoff.
Private, point-to-point link types (MPLS, satellite, microwave, and Other) will form tunnels
with only the same link type; for example, MPLS-to-MPLS and satellite-to-satellite.
Tunnels will not be created between an MPLS link and an Ethernet link, for example.
STEP 9 | Specify the Maximum Download (Mbps) speed from the ISP in megabits per second (range is
0 to 100,000; there is no default). You can enter a range using up to three decimal places, for
example, 10.456. Ask your ISP for the link speed or sample the link’s maximum speeds with a
tool such as speedtest.net and take an average of the maximums over a good length of time.
STEP 10 | Specify the Maximum Upload (Mbps) speed to the ISP in megabits per second (range is 0
to 100,000; there is no default). You can enter a range using up to three decimal places, for
example, 10.456. Ask your ISP for the link speed or sample the link’s maximum speeds with a
tool such as speedtest.net and take an average of the maximums over a good length of time.
STEP 11 | Select Eligible for Error Correction Profile interface selection to enable Forward Error
Correction (FEC) or packet duplication for interfaces. You must enable this on both the
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encoding and decoding firewalls; you must also create an Error Correction profile to apply to
the SD-WAN policy rule for specific applications.
STEP 12 | VPN Data Tunnel Support determines whether the branch-to-hub traffic and return traffic
flows through a VPN tunnel for added security (the default method) or flows outside of the
VPN tunnel to avoid encryption overhead.
• Leave VPN Data Tunnel Support enabled for public link types that have direct internet connections
or internet breakout capability, such as cable modem, ADSL, and other internet connections.
• You can disable VPN Data Tunnel Support for private link types such as MPLS, satellite, or
microwave that do not have internet breakout capability. However, you must first ensure the traffic
cannot be intercepted because it will be sent outside of the VPN tunnel.
• The branch may have DIA traffic that needs to fail over to the private MPLS link connecting to the
hub, and reach the internet from the hub. The VPN Data Tunnel Support setting determines whether
the private data flows through the VPN tunnel or flows outside the tunnel, and the failed over traffic
uses the other connection (that the private data flow doesn’t use). The firewall uses zones to segment
DIA failover traffic from private MPLS traffic.
STEP 13 | If you Configure DIA AnyPath, a principal virtual interface can have multiple hub virtual
interfaces, so you must prioritize the order in which a particular hub is selected for failover.
Specify such priority by setting the VPN Failover Metric for the VPN tunnels bundled in the
hub virtual interface where this profile is applied. The lower the metric, the high the priority
of the interface to be selected during failover. If multiple hub virtual interfaces have the same
metric value, SD-WAN sends new session traffic to them in round-robin fashion.
STEP 14 | (Optional) Select the Path Monitoring mode in which the firewall monitors the interfaces
where you apply this SD-WAN Interface Profile.
The firewall selects what it considers the best monitoring method based on Link Type.
Retain the default setting for the link type unless an interface (where you apply this
profile) has issues that require more aggressive or more relaxed path monitoring.
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• Aggressive—(Default for all link types except LTE and Satellite) Firewall sends probe packets to the
opposite end of the SD-WAN link at a constant frequency. Use this mode if you need fast detection
and failover for brownout and blackout conditions.
• Relaxed—(Default for LTE and Satellite link types) Firewall waits for a number of seconds (the Probe
Idle Time) between sending sets of probe packets, making path monitoring less frequent. When the
probe idle time expires, firewall sends probes for seven seconds at the Probe Frequency configured.
Use this mode when you have low bandwidth links, links that charge by usage (such as LTE), or when
fast detection isn’t as important as preserving cost and bandwidth.
STEP 15 | Set the Probe Frequency (per second), which is the number of times per second that the
firewall sends a probe packet to the opposite end of the SD-WAN link (range is 1 to 5; default
is 5). The default setting provides subsecond detection of brownout and blackout conditions.
If you change the Probe Frequency for a Panorama template, you should also adjust the
Packet Loss percentage threshold in a Path Quality profile for a Panorama device group.
STEP 16 | If you select Relaxed path monitoring, you can set the Probe Idle Time (seconds) that the
firewall waits between sets of probe packets (range is 1 to 60; default is 60).
STEP 17 | Enter the Failback Hold Time (seconds) that the firewall waits for a recovered link to remain
qualified before the firewall reinstates that link as the preferred link after it has failed over
(range is 20 to 120; default is 120).
STEP 18 | Click OK to save the profile.
STEP 19 | Commit and Commit and Push your configuration changes.
STEP 20 | Monitor your application and link path health metrics, and generate reports of your
application and link health performance. For more information, see Monitoring and Reporting.
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Configure a Physical Ethernet Interface for SDWAN
In Panorama™, configure a physical, Layer 3 Ethernet interface and enable SD-WAN functionality. To
configure a physical interface, you must assign it an IPv4 address and next hop gateway, and assign an SDWAN Interface Profile to the interface.
After you use Panorama to create a VPN cluster and export your hub and branch information in the CSV,
Auto VPN configuration in the SD-WAN plugin uses this information to generate a configuration for the
associated branches and hubs that includes the predefined SD-WAN zones and creates secure VPN tunnels
between SD-WAN branches and hubs. Auto VPN configuration also generates the BGP configuration if you
enter BGP information the CSV or in Panorama when you add an SD-WAN branch or hub.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Network > Interfaces > Ethernet, select the appropriate template from the Template
context drop-down, select a slot number, such as Slot1, and select an interface (for example,
ethernet1/1).
STEP 3 | Select the Interface Type as Layer3.
STEP 4 | Select a Virtual Router or create a new Virtual Router.
STEP 5 | Assign the Security Zone that is appropriate for the interface you’re configuring.
For example, if you are creating an uplink to an ISP, you must know that the Ethernet interface you
chose is going to an untrusted zone.
STEP 6 | On the IPv4 tab, Enable SD-WAN.
STEP 7 | Select Type of address:
• Static—In the IP field, Add an IPv4 address and prefix length for the interface. You can use a defined
variable, such as $uplink, with a range of addresses. Enter the IPv4 address of the Next Hop Gateway
(the next hop from the IPv4 address you just entered). The Next Hop Gateway must be on the same
subnet as the IPv4 address. The Next Hop Gateway is the IP address of the ISP’s default router that
the ISP gave you when you bought the service. It is the next hop IP address to which the firewall
sends traffic to reach the ISP’s network, and ultimately, the internet and the hub.
• PPPoE—Enable PPPoE authentication for DSL links, enter the Username and Password, and Confirm
Password.
• DHCP Client—It is critical that DHCP assigns a default gateway, also known as the next hop gateway
for the ISP connection. The ISP will provide all the necessary connectivity information, such as
dynamic IP address, DNS servers, and the default gateway.
If you select DHCP Client, be sure to disable the option Automatically create default
route pointing to default gateway provided by server, which is enabled by default.
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STEP 8 | On the SD-WAN tab, select an SD-WAN Interface Profile that you already created (or create
a new SD-WAN Interface Profile) to apply to this interface. The SD-WAN Interface Profile has
an associated link tag, so the interfaces where this profile is applied will have the associated
link tag. An interface can have only one link tag.
STEP 9 | Click OK to save the Ethernet interface.
STEP 10 | Commit and Commit and Push your configuration changes.
STEP 11 | (SD-WAN manual configuration only) Configure a Virtual SD-WAN Interface. Auto VPN
configuration will perform this task if you are using Auto VPN.
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Configure an Aggregate Ethernet Interface and
Subinterfaces for SD-WAN
Physical firewalls running PAN-OS 10.1 and SD-WAN Plugin 2.1.0 support SD-WAN on aggregated
Ethernet (AE) interfaces so that an SD-WAN firewall in a data center, for example, can have an aggregate
interface group (bundle) of physical Ethernet interfaces that provide link redundancy. SD-WAN supports AE
interfaces with or without subinterfaces. You can create an AE interface with subinterfaces that you can tag
for different ISP services in order to provide end-to-end traffic segmentation. Thus, your ISP services can
reach multiple labs or buildings without needing a dedicated pair of fibers for each connection. A Layer 3 AE
interface group connects to a router, as shown in the following figure:
VM-Series firewalls do not support AE interfaces. An SD-WAN hub or branch firewall that
has an AE interface should not belong to the same VPN cluster as a VM-Series SD-WAN
hub or branch firewall because AE interfaces are not supported on VM-Series firewalls.
PPPoE is not supported on subinterfaces.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Configure an SD-WAN Interface Profile for each ISP connection (subinterface) in the AE
interface group to define its link attributes.
STEP 3 | Create an AE interface group.
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1.
2.
3.
4.
Select Network > Interfaces > Ethernet, select a Panorama Template, and Add Aggregate Group.
For Interface Name, enter the number to identify the aggregate group; range is 1 to 16.
For Interface Type, select Layer3.
Click OK.
STEP 4 | Assign physical interfaces to the aggregate group.
1. Select Network > Interfaces > Ethernet and select the interface you want to assign to the aggregate
group.
2. Select the Interface Type as Aggregate Ethernet.
3. Select the Aggregate Group you created; for example, ae1.
4. On the Advanced tab, select the Link Speed, Link Duplex, and Link State.
5. Click OK.
6. Repeat this step for each interface you want to assign to the aggregate group.
STEP 5 | For the aggregate group, create a subinterface that uses a static IP address.
1. Select Network > Interfaces > Ethernet, highlight the aggregate interface, such as ae1, and click Add
Subinterface at the bottom of the screen.
2. For Interface Name, enter a number after the period, such as 107.
3. Enter the VLAN Tag to differentiate between the subinterfaces. For ease of use, make the tag the
same number as the subinterface ID.
4. Select the IPv4 tab and Enable SD-WAN.
5. Select the Type of address: Static.
6. Add the IP address (and subnet mask) of the subinterface.
7. Enter the IP address of the Next Hop Gateway.
8. Click OK.
STEP 6 | Alternatively, for the aggregate group, create a subinterface that uses DHCP to get its address.
1. Select Network > Interfaces > Ethernet and in the Template field, select a Template Stack.
2. Highlight the aggregate interface, such as ae1, and click Add Subinterface at the bottom of the
screen.
3. Highlight the subinterface and click Override at the bottom of the screen.
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4. Highlight the subinterface and for Interface Name, enter a number after the period, such as 1.
5. Enter the VLAN Tag to differentiate between the subinterfaces. For ease of use, make the tag the
same number as the subinterface ID.
6. Select the IPv4 tab and Enable SD-WAN.
7. Select the Type of address: DHCP Client.
8. Select Enable.
9. Uncheck (do not select) Automatically create default route pointing to default gateway provided by
server.
10.Select the Advanced tab and DDNS tab.
11.Select Settings and Enable. The Hostname is automatically generated by the Panorama SD-WAN
plugin.
12.Select the Vendor as Palo Alto Networks DDNS.
13.Click OK.
STEP 7 | Apply an SD-WAN Interface Profile to the subinterface.
1. Highlight the subinterface you created and select the SD-WAN tab.
2. Select the SD-WAN Interface Profile you created for this link or create a new profile.
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3. Click OK.
STEP 8 | Repeat the prior steps to create additional Layer3 subinterfaces for the aggregate interface
group and apply an SD-WAN Interface Profile to each subinterface.
STEP 9 | Commit.
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Configure Layer 3 Subinterfaces for SD-WAN
Firewalls running PAN-OS 10.1 and SD-WAN Plugin 2.1.0 support SD-WAN on Layer 3 subinterfaces so
that the firewall can segment traffic using VLAN tags. The following task shows how to create a Layer3
subinterface that uses a static IP address and how to create one that uses DHCP to get its address. It shows
how to assign a VLAN tag to the subinterface and enable SD-WAN on the subinterface. Create an SD-WAN
interface profile to define each ISP connection and assign the profile to the corresponding subinterface (a
virtual SD-WAN interface).
If you configure SD-WAN Layer 3 subinterfaces on VM-Series firewalls, the VMware
configuration must have respective portgroups attached to those interfaces that allow all
VLANs.
PPPoE is not supported on subinterfaces.
STEP 1 | Configure an SD-WAN Interface Profile for each ISP connection (subinterface) to define its link
attributes.
STEP 2 | Create a Layer 3 subinterface that uses a static IP address.
Select Network > Interfaces > Ethernet and in the Template field select a template.
Select an interface.
For Interface Type, select Layer3 and click OK.
Highlight the interface and click Add Subinterface at the bottom of the screen.
After the Interface Name and period, enter the subinterface number.
Enter a Tag for the subinterface (range is 1 to 4,094). For ease of use, make the tag the same number
as the subinterface ID.
7. On the IPv4 tab, Enable SD-WAN.
8. Select the Type of address: Static.
9. Add the IP address and subnet mask.
10.Enter the IP address of the Next Hop Gateway.
11.Click OK.
1.
2.
3.
4.
5.
6.
STEP 3 | Alternatively, create a Layer 3 subinterface that uses DHCP to get its address.
1. Select Network > Interfaces > Ethernet and in the Template field, select a template stack (not a
template).
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2.
3.
4.
5.
6.
7.
Select an interface.
For Interface Type, select Layer3 and click OK.
Highlight the interface and click Add Subinterfaces at the bottom of the screen.
Highlight the subinterface and click Override.
Highlight the subinterface and after the Interface Name and period, enter the subinterface number.
Enter a Tag for the subinterface (range is 1 to 4,094). For ease of use, make the tag the same number
as the subinterface ID.
8. On the IPv4 tab, Enable SD-WAN.
9. Select Type of address: DHCP Client and Enable.
10.Uncheck (do not select) Automatically create default route pointing to default gateway provided by
server.
11.Select the Advanced tab and then the DDNS tab.
12.Select Settings and Enable. The Hostname is automatically generated by the Panorama SD-WAN
plugin.
13.Select the Vendor as Palo Alto Networks DDNS.
14.Click OK.
STEP 4 | Apply an SD-WAN Interface Profile to the subinterface.
1. Highlight the subinterface you created and select the SD-WAN tab.
2. Select the SD-WAN Interface Profile you created for this link or create a new profile.
3. Click OK.
STEP 5 | Repeat the prior steps to add more subinterfaces to the interface.
STEP 6 | Commit.
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Configure a Virtual SD-WAN Interface
If you use Auto VPN configuration through Panorama, it creates the SD-WAN interfaces for you, in which
case you don’t create and configure a virtual SD-WAN interface.
If you aren’t using Auto VPN configuration with Panorama, create and configure a virtual SD-WAN
interface to specify one or more physical, SD-WAN-capable ethernet interfaces that go to the same
destination, such as to a specific hub or to the internet. In fact, all links in a virtual SD-WAN interface must
be the same type: all VPN tunnel links or all direct internet access (DIA) links.
The first figure illustrates an example of an SD-WAN interface named SDWAN.1 that bundles two physical
interfaces, which use different carriers: Ethernet1/1 (the cable modem link) and Ethernet1/2 (the fiber
service link). Both links are a VPN tunnel from the branch to the hub.
In this figure, both links in the SD-WAN interface happen to use the same link tag (Cheap
Broadband), but links in an SD-WAN interface can have different link tags.
In the following figure, SDWAN.2 bundles Ethernet1/1 and Ethernet1/2 links, which are both DIA links
from the branch to the internet:
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STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Network > Interfaces > SD-WAN and select the appropriate template from the
Template context drop-down.
STEP 3 | Add a logical SD-WAN interface by entering a number (in the range 1 to 9,999) after the
sdwan. prefix.
Auto VPN configuration creates SD-WAN interfaces numbered .901, .902, and so on, so
do not use these numbers.
STEP 4 | Enter a descriptive Comment.
Add a helpful comment, such as Branch to internet or Branch to western USA
hub if you are on the Branch template. Your comment makes troubleshooting easier
rather than trying to decipher auto-generated names in logs and reports.
STEP 5 | On the Config tab, assign the SD-WAN interface to a Virtual Router.
STEP 6 | Assign the SD-WAN interface to a Security Zone.
The virtual SD-WAN interface and all of its interface members must be in the same Security zone, thus
ensuring the same Security policy rules apply to all paths from the branch to the same destination.
STEP 7 | On the Advanced tab, Add Interfaces, which are members that go to the same destination,
by selecting one or more Layer 3 Ethernet interfaces (for DIA) or one more virtual VPN tunnel
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interfaces (for hub). If you enter more than one interface, they must all be the same type (either
VPN tunnel or DIA).
The firewall virtual router uses this virtual SD-WAN interface to route SD-WAN traffic to a
DIA or a hub location. During routing, the route table determines which virtual SD-WAN
interface (egress interface) the packet will exit based on the destination IP address in the
packet. Then the SD-WAN path health and Traffic Distribution profiles in the SD-WAN
policy rule that the packet matches determine which path to use (and the order in which to
consider new paths if a path deteriorates.)
STEP 8 | Click OK to save your configuration change.
STEP 9 | Commit and Commit and Push your configuration changes.
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Create a Default Route to the SD-WAN
Interface
If you are using a service route to access Panorama™, to bring up the firewall you must create a default
route that points to an SD-WAN interface you created.
Auto VPN creates a virtual SD-WAN interface named sdwan.901 for DIA and creates a virtual SD-WAN
interface named sdwan.902 for VPN tunnels. Auto VPN also creates its own default route that uses the
sdwan.901 interface as its egress interface and uses a low metric, so that the sdwan.901 interface is
preferred over the default route you created.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select the Template you are working on.
STEP 3 | Select Network > Virtual Routers and select a virtual router, such as sd-wan.
STEP 4 | Select Static Routes and Add a static route by Name.
STEP 5 | For Destination, enter 0.0.0.0/0.
STEP 6 | For egress Interface, select one of the logical SD-WAN interfaces you created to bring up the
firewall, such as sdwan.1.
The egress interface you select can be any logical SD-WAN interface except sdwan.901
or sdwan.902.
STEP 7 | For Next Hop, select None.
STEP 8 | For Metric, enter a value greater than 50, so that this default route is not preferred over the
default route that Auto VPN creates with a low metric.
STEP 9 | Click OK.
STEP 10 | Select Commit and Commit and Push your configuration changes.
STEP 11 | Commit your changes.
STEP 12 | Repeat this task for other templates on firewalls that use a service route to access Panorama.
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Create a Path Quality Profile
Create a Path Quality profile for each set of business-critical and latency-sensitive applications, application
filters, application groups, services, service objects and service group objects that has unique network
quality (health) requirements based on latency, jitter, and packet loss percentage. Applications and services
can share a Path Quality profile. Specify the maximum threshold for each parameter, above which the
firewall considers the path deteriorated enough to select a better path.
As an alternative to creating a Path Quality profile, you can use any of the predefined Path Quality profiles,
such as general-business, voip-video, file-sharing, audio-streaming, photo-video, and remote-access, and
more. The predefined profiles are set up to optimize the latency, jitter, and packet loss thresholds for the
type of applications and services suggested by the name of the profile.
The predefined Path Quality profiles for a Panorama device group are based on the default
Probe Frequency settings in the SD-WAN Interface profile for a Panorama template. If you
change the default Probe Frequency setting, you must adjust the Packet Loss percentage
threshold in the Path Quality profile for the firewalls in a Device Group that are affected by
the Panorama template where you changed the Interface profile.
The firewall treats the latency, jitter, and packet loss thresholds as OR conditions, meaning if any one of the
thresholds is exceeded, the firewall selects the new best (preferred) path. Any path that has latency, jitter,
and packet loss less than or equal to all three thresholds is considered qualified and the firewall selected the
path based on the associated Traffic Distribution profile.
By default, the firewall measures latency and jitter every 200ms and takes an average of the last three
measurements to measure path quality in a sliding window. You can modify this behavior by selecting
aggressive or relaxed path monitoring when you Configure an SD-WAN Interface Profile.
If a path fails over because it exceeded the configured packet loss threshold, the firewall still sends probing
packets on the failed path and calculates its packet loss percentage as the path recovers. It can take
approximately three minutes for the packet loss percentage on a recovered path to fall below the packet
loss threshold configured in the Path Quality profile. For example, suppose an SD-WAN policy rule for an
application has a Path Quality profile that specifies a packet loss threshold of 1% and a Traffic Distribution
profile that specifies Top Down distribution with tag 1 (applied to tunnel.1) first on the list and tag 2
(applied to tunnel.2) next on the list. When tunnel.1 exceeds 1% packet loss, the data packets fail over
to tunnel.2. After tunnel.1 recovers to 0% packet loss (based on probing packets), it can take up to three
minutes for the monitored packet loss rate for tunnel.1 to drop below 1%, at which time the firewall then
selects tunnel.1 as the best path again.
The sensitivity setting indicates which parameter (latency, jitter, or packet loss) is more important
(preferred) for the applications to which the profile applies. When the firewall evaluates link quality, it
considers a parameter with a high setting first. For example, when the firewall compares two links, suppose
one link has 100ms latency and 20ms jitter; the other link has 300ms latency and 10 ms jitter. If the
sensitivity for latency is high, the firewall chooses the first link. If the sensitivity for jitter is high, the firewall
chooses the second link. If the parameters have the same sensitivity (by default the parameters are set to
medium), the firewall evaluates packet loss first, then latency, and jitter last.
Reference the Path Quality profile in an SD-WAN policy rule to control the threshold at which the firewall
replaces a deteriorating path with a new path for matching application packets.
STEP 1 | Log in to the Panorama Web Interface.
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STEP 2 | Select a Device Group.
STEP 3 | Select Objects > SD-WAN Link Management > Path Quality Profile.
STEP 4 | Add a Path Quality profile by Name using a maximum of 31 alphanumeric characters.
STEP 5 | For Latency, double-click the Threshold value and enter the number of milliseconds allowed
for a packet to leave the firewall, arrive at the opposite end of the SD-WAN tunnel, and a
response packet to return to the firewall before the threshold is exceeded (range is 10 to
2,000; default is 100).
STEP 6 | For Latency, select the Sensitivity (low, medium, or high). Default is medium.
Click the arrow at the end of the Threshold column to sort thresholds in ascending or
descending numerical order.
STEP 7 | For Jitter, double-click the Threshold value and enter the number of milliseconds (range is 10
to 1,000; default is 100).
STEP 8 | For Jitter, select the Sensitivity (low, medium, or high). Default is medium.
STEP 9 | For Packet Loss, double-click the Threshold value and enter the percentage of packets lost on
the link before the threshold is exceeded (range is 1 to 100.0; default is 1).
Setting the Sensitivity for Packet Loss has no effect, so leave the default setting.
If you change the Probe Frequency in an SD-WAN Interface profile for a Panorama
template, you should also adjust the Packet Loss threshold for a Panorama device group.
STEP 10 | Click OK.
STEP 11 | Commit and Commit and Push your configuration changes.
STEP 12 | Commit your changes.
STEP 13 | Repeat this task for every Device Group.
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Configure SaaS Monitoring
Configure a SaaS quality profile to monitor Direct Internet Access (DIA) links between a SaaS application
and your branch firewall.
• Create a SaaS Quality Profile
• Use Case: Configure SaaS Monitoring for a Branch Firewall
• Use Case: Configure a Hub Firewall Failover for SaaS Monitoring from a Branch Firewall to the Same
SaaS Application Destination
• Use Case: Configure a Hub Firewall Failover for SaaS Monitoring from a Branch Firewall to a Different
SaaS Application Destination
Create a SaaS Quality Profile
If your branch firewall has a Direct Internet Access (DIA) link to a Software-as-a-Service (SaaS) application,
create a SaaS Quality profile to specify how one or more SaaS applications should be monitored. SaaS
Quality profiles are associated with an SD-WAN policy rule to determine how the branch firewall
determines the path quality thresholds for latency, jitter, and packet loss and selects the preferred path for
an outgoing packet.
The SaaS Quality profile supports up to four static IP addresses, or one fully qualified domain name (FQDN)
or URL per SaaS Quality profile. When multiple static IP addresses are configured, the branch firewall
monitors one IP address at a time in a cascading order based on how the IP addresses are ordered in the
SaaS Quality profile. For example, if you add IP1, IP2, IP3, and IP4, the branch firewall monitors IP1 to
determine if the path quality thresholds have been exceeded, then continues to IP2, and so forth.
SD-WAN monitoring and reporting data displays the SaaS application and SaaS application
IP, FQDN, or URL as it is currently configured in the SaaS Quality profile associated with
an SD-WAN policy rule regardless of the time filter applied when viewing your SD-WAN
monitoring data.
For example, three days ago you initially configured the IP address of your SaaS application
as 192.168.10.50 in a SaaS Quality profile and had traffic match the SD-WAN policy rule
to which the SaaS Quality profile is associated. Today, you reconfigured this existing SaaS
Quality profile and changed the SaaS application IP address to 192.168.10.20. When you
go review the SD-WAN monitoring data, all existing monitoring data for this SaaS application
display the IP address 192.168.10.20.
STEP 1 | Log in to the Panorama web interface.
STEP 2 | Select Objects > SD-WAN Link Management > SaaS Quality Profile and specify the Device
Group containing your SD-WAN configuration.
STEP 3 | Add a new SaaS quality profile.
STEP 4 | Enter a descriptive Name for the SaaS Quality profile.
STEP 5 | (Optional) Enable (check) Shared to make the SaaS Quality profile shared across all device
groups.
STEP 6 | (Optional) Enable (check) Disable override to disable overriding the SaaS Quality profile
configuration on the local firewall.
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Disable override can only be enabled if Shared is disabled in the previous step.
STEP 7 | Configure the SaaS Monitoring Mode.
• Automatically monitor the SaaS application path health.
Enabled by default, Adaptive monitoring allows the branch firewall to passively monitor the SaaS
application session for send and receive activity to determine if the path quality thresholds have
been exceeded. The SaaS application path health quality is automatically determined without any
additional health checks on the SD-WAN interface.
Adaptive SaaS monitoring is supported only for TCP SaaS applications.
• Configure the Static IP address for the SaaS application.
Create a SaaS Quality profile per critical SaaS application that you need monitored.
If a SaaS application has multiple IP addresses, configure a SaaS Quality profile with
the multiple static IP addresses for that SaaS application.
SaaS monitoring is resource-intensive and may impact firewall performance if
monitoring a large number of SaaS applications. It is a best practice to only monitor
those business-critical SaaS applications that need good usability.
1. Select IP Address/Object > Static IP Address and Add an IP address.
2. Enter the IP address of the SaaS application or select a configured address object.
3. Enter the Probe Interval by which the branch firewall probes the SaaS application path for health
information.
4. Click OK to save your configuration changes.
• Configure the fully qualified domain name (FQDN) for the SaaS application.
1.
2.
3.
4.
Configure a FQDN address object for the SaaS application.
Select IP Address/Object > FQDN and Add the FQDN.
Select the FQDN address object for the SaaS application.
Enter the Probe Interval by which the branch firewall probes the SaaS application path for health
information.
5. Click OK to save your configuration changes.
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• Configure the URL for the SaaS application.
URL monitoring is only supported for traffic over ports 80, 443, 8080, 8081, and 143.
1. Select HTTP/HTTPS.
2. Enter the Monitored URL of the SaaS application.
3. Enter the Probe Interval by which the branch firewall probes the SaaS application path for health
information.
The minimum probe interval supported for a SaaS application HTTP/HTTPS is 3 seconds.
4. Click OK to save your configuration changes.
STEP 8 | Select Commit and Commit and Push your configuration changes.
Use Case: Configure SaaS Monitoring for a Branch Firewall
If your organization is leveraging a business-critical SaaS application at a branch firewall location, you can
configure a SaaS Quality profile and associate it with a SD-WAN policy rule to monitor the latency, jitter,
and packet loss health metrics of the critical SaaS application and swap links from an SD-WAN branch
firewall to a SaaS application on a Direct Internet Access (DIA) link to ensure application usability.
If the business-critical SaaS application DIA link health metric thresholds are exceeded, the link is swapped
to the next DIA link configured in the Traffic Distribution profile for all new sessions. The existing session
on the degraded DIA link is not swapped over to the next DIA link.
STEP 1 | Set up your SD-WAN deployment.
1.
2.
3.
4.
Install the SD-WAN Plugin.
Set Up Panorama and Firewalls for SD-WAN.
Add SD-WAN Devices to Panorama.
(High availability configurations only) Configure HA Devices for SD-WAN.
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5. Create a VPN Cluster.
STEP 2 | Create a Link Tag to group the SaaS application DIA links.
Create multiple Link Tags for your DIA links in order to apply different SD-WAN monitoring settings for
each SaaS application DIA link based on the link type.
Additionally, you can create a single Link Tag for multiple DIA links to group the links into a single link
bundle. Creating a single Link Tag for multiple DIA links allows you to aggregate bandwidth between
bundled links and allow the firewall to distribute sessions between multiple links.
STEP 3 | Configure an SD-WAN Interface profile to define the characteristics of your ISP connection
and specify the speed of the DIA link, how frequently the branch firewall monitors the link, and
select the Link Tag to specify to which link the SD-WAN Interface profile applies.
If you created multiple Link Tags, you must configure an SD-WAN Interface profile for each Link Tag.
If you created a link bundle by assigning multiple DIA links to a single Link Tag, specifying that link tag
applies the SD-WAN Interface profile settings to all DIA links in the bundle.
STEP 4 | Configure a physical Ethernet interface for each SaaS application DIA link.
All physical Ethernet interfaces for DIA links must be Layer3.
STEP 5 | Configure a Virtual SD-WAN Interface that groups all physical Ethernet interfaces for the SaaS
application DIA links into a single interface group.
The firewall virtual router uses this virtual SD-WAN interface to route SD-WAN traffic to a DIA location.
The SD-WAN path health and Traffic Distribution profiles in the SD-WAN policy rule then determine
which path to use and the order in which to consider new paths if a path health deteriorates.
STEP 6 | Create a Path Quality profile to configure the latency, jitter, and packet loss thresholds and
sensitivity in order to specify when the branch firewall should swap to the next DIA link.
STEP 7 | Create a SaaS Quality profile to specify your SaaS application and the frequency the DIA link is
monitored.
STEP 8 | Create a Traffic Distribution profile to specify the order the branch firewall swaps to DIA links
in the event of link health degradation.
STEP 9 | Configure an SD-WAN policy rule to specify the SaaS application and link health metrics, and
determine how the firewall selects the preferred link for the critical SaaS application traffic.
In the Application tab, add the SaaS application you are monitoring to the SD-WAN
policy rule to ensure the SaaS monitoring settings are applied only to the desired SaaS
application.
Use Case: Configure a Hub Firewall Failover for SaaS Monitoring
from a Branch Firewall to the Same SaaS Application Destination
If your organization is leveraging a SaaS application at a branch firewall location but the branch firewall has
no healthy DIA links to swap to, you can configure the hub firewall as a failover alternative to maintain a
healthy connection to your SaaS application.
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If the SaaS application DIA link health metric thresholds are exceeded and the branch firewall has no
healthy DIA links available, the link is swapped to the next hub firewall for all new sessions. The existing
session on the degraded DIA link is not swapped over to the hub firewall.
For example, say your branch and hub firewalls are located in the same region and access a SaaS application
using the same destination IP. You can configure the hub firewall to act as a failover in the event there are
no healthy DIA links from the branch firewall to the SaaS application by configuring an identically named
SaaS Quality profile on both the branch and hub firewalls to automatically failover to the hub firewall if no
healthy DIA links are available from the branch firewall. This allows you to maintain a health path for your
SaaS application and maintain accurate end-to-end SaaS application monitoring data without congesting
your network bandwidth.
STEP 1 | Set up your SD-WAN deployment.
1.
2.
3.
4.
5.
Install the SD-WAN Plugin.
Set Up Panorama and Firewalls for SD-WAN.
Add SD-WAN Devices to Panorama.
(High availability configurations only) Configure HA Devices for SD-WAN.
Create a VPN Cluster.
STEP 2 | Create a Link Tag to group the SaaS application DIA links.
Create multiple Link Tags for your DIA links in order to apply different SD-WAN monitoring settings for
each SaaS application DIA link based on the link type.
Additionally, you can create a single Link Tag for multiple DIA links to group the links into a single link
bundle.
STEP 3 | Configure an SD-WAN Interface profile to define the characteristics of your ISP connection
and specify the speed of the DIA link, how frequently the branch firewall monitors the link, and
select the Link Tag to specify to which link the SD-WAN Interface profile applies.
If you created multiple Link Tags, you must configure an SD-WAN Interface profile for each Link Tag.
If you created a link bundle by assigning multiple DIA links to a single Link Tag, specifying that link tag
applies the SD-WAN Interface profile settings to all DIA links in the bundle.
STEP 4 | Configure a physical Ethernet interface for each SaaS application DIA link.
All physical Ethernet interfaces for DIA links must be Layer3.
STEP 5 | Configure a Virtual SD-WAN Interface that groups all physical Ethernet interfaces for the SaaS
application DIA links into a single interface group.
The firewall virtual router uses this virtual SD-WAN interface to route SD-WAN traffic to a DIA location.
The SD-WAN path health and Traffic Distribution profiles in the SD-WAN policy rule then determine
which path to use and the order in which to consider new paths if a path health deteriorates.
STEP 6 | Create identically named SaaS quality profiles for both the hub and branch firewalls.
Two identically named SaaS Quality profiles must be configured on the hub and branch firewalls to
successfully leverage the hub firewall as an alternative failover. The easiest way to accomplish this is to
create a single SaaS Quality profile in the Shared device group. Alternatively, you can create two SaaS
Quality profiles with identical names in different device groups and push them to your hub and branch
firewalls.
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1. Select Objects > SD-WAN Link Management > SaaS Quality Profile, and from the Device Group
drop-down select Shared.
2. Add a new SaaS Quality profile.
3. Enter a descriptive Name for the SaaS Quality profile.
4. Enable (check) Shared to make the SaaS Quality profile shared across all device groups.
This is required to make the SaaS Quality profile available to all device groups your branch and hub
firewalls belong to.
5. Enable (check) Disable override to disable overriding the SaaS Quality profile configuration on the
local firewall.
6. Configure the SaaS Monitoring Mode using one of the following methods.
• Configure the Static IP address for the SaaS application.
Create a SaaS Quality profile per SaaS application. If a SaaS application has
multiple IP addresses, configure a SaaS Quality profile with the multiple static IP
addresses for that SaaS application.
1. Select IP Address/Object > Static IP Address and Add an IP address.
2. Enter the IP address of the SaaS application or select a configured address object.
3. Enter the Probe Interval by which the branch firewall probes the SaaS application path for
health information.
4. Click OK to save your configuration changes.
• Configure the fully qualified domain name (FQDN) for the SaaS application.
1.
2.
3.
4.
Configure a FQDN address object for the SaaS application.
Select IP Address/Object > FQDN and Add the FQDN.
Select the FQDN address object for the SaaS application.
Enter the Probe Interval by which the branch firewall probes the SaaS application path for
health information.
5. Click OK to save your configuration changes.
• Configure the URL for the SaaS application.
URL monitoring is only supported for traffic over ports 80, 443, 8080, 8081, and
143.
1. Select HTTP/HTTPS.
2. Enter the Monitored URL of the SaaS application.
3. Enter the Probe Interval by which the branch firewall probes the SaaS application path for
health information.
4. Click OK to save your configuration changes.
STEP 7 | Create a Traffic Distribution profile to specify the order the branch firewall swaps from DIA
links to VPN links to the hub firewall in the event of link health degradation.
STEP 8 | Configure an SD-WAN policy rule to specify the SaaS application and link health metrics, and
determine how the firewall selects the preferred link for the critical SaaS application traffic.
In the Application tab, add the SaaS application you are monitoring to the SD-WAN
policy rule to ensure the SaaS monitoring settings are applied only to the desired SaaS
application.
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Use Case: Configure a Hub Firewall Failover for SaaS Monitoring
from a Branch Firewall to a Different SaaS Application Destination
If your organization is leveraging a SaaS application at a branch firewall location but the branch firewall
has no healthy DIA links to swap to, you can configure the hub firewall as a failover alternative to maintain
a healthy connection to your SaaS application using a SaaS Quality profile pointing to a different SaaS
application destination.
If the SaaS application DIA link health metric thresholds are exceeded and the branch firewall has no
healthy DIA links available, the link is swapped to the next hub firewall for all new sessions. The existing
session on the degraded DIA link is not swapped over to the hub firewall.
For example, say your branch and hub firewalls are located on opposite sides of the country and access a
SaaS cloud application deployed in a cloud provider such as GCP. You can configure the hub firewall to act
as a failover in the event there are no healthy DIA links from the branch firewall to the SaaS application. To
accomplish this, configure an identically named SaaS Quality profile on both the branch and hub firewalls to
automatically failover to the hub firewall if no healthy DIA links are available from the branch firewall. The
SaaS Quality profile configured on the hub firewall to points to the on-ramp location closest to the hub to
take advantage of local resources closest to it. This allows you flexibility in specifying healthy failover paths
and the ability to maintain accurate end-to-end SaaS application monitoring data without congesting your
network bandwidth.
STEP 1 | Set up your SD-WAN deployment.
1.
2.
3.
4.
5.
Install the SD-WAN Plugin.
Set Up Panorama and Firewalls for SD-WAN.
Add SD-WAN Devices to Panorama.
(High availability configurations only) Configure HA Devices for SD-WAN.
Create a VPN Cluster.
STEP 2 | Create a Link Tag to group the SaaS application DIA links.
Create multiple Link Tags for your DIA links in order to apply different SD-WAN monitoring settings for
each SaaS application DIA link based on the link type.
Additionally, you can create a single Link Tag for multiple DIA links to group the links into a single link
bundle.
STEP 3 | Configure an SD-WAN Interface profile to define the characteristics of your ISP connection
and specify the speed of the DIA link, how frequently the branch firewall monitors the link, and
select the Link Tag to specify to which link the SD-WAN Interface profile applies.
If you created multiple Link Tags, you must configure an SD-WAN Interface profile for each Link Tag.
If you created a link bundle by assigning multiple DIA links to a single Link Tag, specifying that link tag
applies the SD-WAN Interface profile settings to all DIA links in the bundle.
STEP 4 | Configure a physical Ethernet interface for each SaaS application DIA link.
All physical Ethernet interfaces for DIA links must be Layer3.
STEP 5 | Configure a Virtual SD-WAN Interface that groups all physical Ethernet interfaces for the SaaS
application DIA links into a single interface group.
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The firewall virtual router uses this virtual SD-WAN interface to route SD-WAN traffic to a DIA location.
The SD-WAN path health and Traffic Distribution profiles in the SD-WAN policy rule then determine
which path to use and the order in which to consider new paths if a path health deteriorates.
STEP 6 | Create identically named SaaS quality profiles for both the hub and branch firewalls.
Two identically named SaaS Quality profiles must be configured on the hub and branch firewalls to
successfully leverage the hub firewall as an alternative failover. Create two SaaS Quality profiles with
identical names each pointing to a different SaaS application destination in different device groups and
push them to your hub and branch firewalls.
1. Select Objects > SD-WAN Link Management > SaaS Quality Profile, and select the target device
group containing the branch firewall from the Device Group drop-down.
2. Add a new SaaS Quality profile.
3. Enter a descriptive Name for the SaaS Quality profile.
4. Enable (check) Disable override to disable overriding the SaaS Quality profile configuration on the
local firewall.
5. Configure the SaaS Monitoring Mode using one of the following methods.
• Configure the Static IP address for the SaaS application.
Create a SaaS Quality profile per SaaS application. If a SaaS application has
multiple IP addresses, configure a SaaS Quality profile with the multiple static IP
addresses for that SaaS application.
1. Select IP Address/Object > Static IP Address and Add an IP address.
2. Enter the IP address of the SaaS application or select a configured address object.
3. Enter the Probe Interval by which the branch firewall probes the SaaS application path for
health information.
4. Click OK to save your configuration changes.
• Configure the fully qualified domain name (FQDN) for the SaaS application.
1.
2.
3.
4.
Configure a FQDN address object for the SaaS application.
Select IP Address/Object > FQDN and Add the FQDN.
Select the FQDN address object for the SaaS application.
Enter the Probe Interval by which the branch firewall probes the SaaS application path for
health information.
5. Click OK to save your configuration changes.
• Configure the URL for the SaaS application.
URL monitoring is only supported for traffic over ports 80, 443, 8080, 8081, and
143.
1. Select HTTP/HTTPS.
2. Enter the Monitored URL of the SaaS application.
3. Enter the Probe Interval by which the branch firewall probes the SaaS application path for
health information.
4. Click OK to save your configuration changes.
6. Select Objects > SD-WAN Link Management > SaaS Quality Profile, and select the target device
group containing the hub firewall from the Device Group drop-down.
7. Repeat Steps 6.2 through 6.5 to create an identically named SaaS Quality profile for a SaaS
application at a different destination.
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This step is required to make in identically named SaaS Quality profile in the device group your hub
firewall belongs to.
STEP 7 | Create a Traffic Distribution profile to specify the order the branch firewall swaps from DIA
links to VPN links to the hub firewall in the event of link health degradation.
STEP 8 | Configure an SD-WAN policy rule to specify the SaaS application and link health metrics, and
determine how the firewall selects the preferred link for the critical SaaS application traffic.
In the Application tab, add the SaaS application you are monitoring to the SD-WAN
policy rule to ensure the SaaS monitoring settings are applied only to the desired SaaS
application.
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SD-WAN Traffic Distribution Profiles
In an SD-WAN topology, the firewall detects a brownout, a blackout, and path deterioration per application
and selects a new path to ensure you experience the best performance for your critical business
applications. Having multiple ISP links allows you to scale your traffic capacity and reduce costs. The new
path selection occurs in less than one second if you leave Path Monitoring and Probe Frequency with
default settings; otherwise, new path selection could take more than one second.
To implement such path selection, the firewall uses SD-WAN policy rules, which reference a Traffic
Distribution profile that specifies how to select paths for session load distribution and for failover to a
better path when path quality for an application deteriorates.
Decide which traffic distribution method an application or service (that matches an SD-WAN policy rule)
should use:
• Best Available Path—Select this method if cost is not a factor and you will allow applications to use any
path out of the branch. The firewall uses path quality metrics to distribute traffic and to fail over to one
of the links belonging to a Link Tag in the list, thus providing the best application experience to users.
• Top-Down Priority—If you have expensive or low-capacity links that you want used only as a last resort
or as a backup link, use the Top-Down Priority method and place the tags that include those links last
in the list of Link Tags in the profile. The firewall uses the top Link Tag in the list first to determine the
links on which to session load traffic and on which to fail over. If none of the links in the top Link Tag
are qualified based on the Path Quality profile, the firewall selects a link from the second Link Tag in the
list. If none of the links in the second Link Tag are qualified, the process continues as necessary until the
firewall finds a qualified link in the last Link Tag. If all associated links are overloaded and no link meets
quality thresholds, the firewall uses the Best Available Path method to select a link on which to forward
traffic. At the start of a failover event, the firewall starts at the top of the Top-Down Priority list of Link
Tags to find a link to which it fails over.
• Weighted Session Distribution—Select this method if you want to manually load traffic (that matches
the rule) onto your ISP and WAN links and you don’t require failover during brownout conditions. You
manually specify the link’s load when you apply a static percentage of new sessions that the interfaces
grouped with a single Link Tag will get. The firewall distributes new sessions using round robin among
the links having the specified Link Tags, until the link assigned the lowest percentage reaches that
percentage of sessions. The firewall then uses the remaining link(s) in the same manner. You might select
this method for applications that aren’t sensitive to latency and that require a lot of the link’s bandwidth
capacity, such as large branch backups and large file transfers.
If the link experiences brownout, the firewall doesn’t redirect the matching traffic to a
different link.
In the event of a failing path condition, the traffic distribution method you choose for application(s) in an
SD-WAN policy rule, along with the Link Tags on groups of links, determine if and how the firewall selects a
new path (performs link failover) as follows:
Path Condition
Top-Down Priority
Best Available Path
Weighted Session
Distribution
Session on existing path
failed a path health
threshold (brownout)
Affected session fails
over to better path (if
available)
Affected session fails
over to better path (if
available)
Affected sessions don’t
fail over
Top-Down or Best
Available Path
Affected session fails
back to previous path
Affected session
stays on existing path,
doesn’t fail back
Affected sessions don’t
fail over
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Path Condition
Top-Down Priority
Best Available Path
Weighted Session
Distribution
Top-Down or Best
Available Path
recovered: existing path
fails a health check
All sessions fail back to
previous path
Selective sessions fail
back to previous path
until affected existing
path recovers
Affected sessions don’t
fail over
Existing path is down
(blackout)
All sessions fail over to
next path on list
All sessions fail over to
next best path
All sessions fail over
to other tags based on
weight settings
Brownout with no
qualified (better) path
Take best available path
Take best available path
Take best available path
recovered: existing path
is still qualified (good)
Additionally, the firewall automatically performs session load sharing among interface members of a single
Link Tag. After those interfaces approach their maximum Mbps, new sessions flow over to interfaces having
a different Link Tag (based on the traffic distribution method) if those interfaces have better health metrics.
Path Condition
Top-Down Priority
Best Available Path
Weighted Session
Distribution
Multiple links with the
same SD-WAN Tag
Share session load
equally among links
within SD-WAN Tag
Share session load
based on best path
within SD-WAN Tag
Share session load
based on % weight
assigned to SD-WAN
Tag
Multiple links with
different SD-WAN Tags
Share session load
based on list priority,
load link(s) in first SDWAN Tag first.
Share session load
based on best path
from all SD-WAN Tags
Share session load
based on % weight
assigned to SD-WAN
Tags
The following figure illustrates an example of a Traffic Distribution profile that uses the Top-Down Priority
method. The #1, #2, and #3 are the order of Link Tags of links the firewall examines, if necessary, to find a
healthy path to complete an application session failover. For each separate failover event that arises, the
firewall starts at the beginning of the Top-Down list of Link Tags.
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1. In this Top-Down Priority example, packets from a branch carrying a specific application (for example,
office365-enterprise-access) arrive at the firewall. The firewall uses the route table to determine the
next hop to the destination and the outgoing interface, which is the virtual SD-WAN interface tunnel
named sdwan.1. The Security policy rule allows the packets. The packets then match an SD-WAN policy
rule (named Office365 to Hub1) that specifies the destination zone for the hub. The firewall uses the
SD-WAN policy rule’s Path Quality profile, Traffic Distribution profile, and that profile’s Link Tags to
determine which interface member (link) from sdwan.1 to use. The Traffic Distribution profile lists three
Link Tags in this order: #1 Cheap Broadband, #2 HQ Backhaul, and #3 Backup (which is the order of Link
Tags the firewall examines links to find a link to which it can fail over).
2. Assuming all paths are qualified (by the Path Quality profile), the firewall distributes the packets to one
of the physical links tagged with first Link Tag in the Traffic Distribution profile list: Cheap Broadband.
The sdwan.1 tunnel has two member interfaces (two carriers): the cable modem VPN tunnel and the
fiber service VPN tunnel. The firewall first examines a link by round-robin, and chooses the first link it
finds that is qualified, for example, the cable modem link.
3. If the first Cheap Broadband link (cable modem) isn’t a qualified link, the firewall selects the second
Cheap Broadband link (fiber service).
4. If the second Cheap Broadband link (fiber service) isn’t a qualified link, the firewall selects the link tagged
with the #2 link tag HQ Backhaul, which is a more expensive MPLS link to the same hub.
5. If the MPLS link isn’t a qualified link, the firewall selects the link tagged with the #3 link tag Backup,
which is an even more expensive 5G LTE link to the same hub.
6. If the firewall doesn’t find a qualified link to fail over to, it uses the Best Available method to select a link.
7. Upon the start of a new failover event, the firewall starts at the top of the Top-Down list of Link Tags to
find a link to which it will fail over.
Keep in mind that SD-WAN traffic distribution is one of the later steps in the packet flow logic. Let’s zoom
out to see a broader view of the packet flow.
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Packet flow details for the figure are as follows:
1. When a session for an application arrives at the firewall, the firewall performs session lookup to
determine if the session is an existing session or new session.
2. A new session goes through session setup:
1. Forwarding lookup—The firewall gets the egress zone, egress interface, and virtual system from the
Layer 3 route table or Layer 2 Forwarding Database lookup, etc. For applications that match an SDWAN policy rule, the firewall uses the virtual SD-WAN interface as the egress interface.
2. NAT Policy lookup—If session matches a NAT rule, firewall does another forwarding lookup to
determine the final (translated) egress interface and zone.
3. Security Policy lookup—If a Security Policy rule allows the session, the session is created and installed
in the session table. The firewall then performs additional classification using App-ID™ and User-ID™.
3. Content Inspection—The firewall performs Threat Inspection (Anti-Spyware for IPS [Vulnerability
®
Protection], Antivirus, URL Filtering, WildFire , etc.) on payload and headers as needed.
4. The Forwarding/Egress stage performs path selection and forwards the packets. This stage is where SDWAN path selection occurs.
1. Packet Forwarding Process—The firewall uses the ingress interface to determine the forwarding
domain; performs routing, switching, or virtual wire forwarding.
2. SD-WAN path selection occurs when the application matches an SD-WAN policy rule; the Path
Quality profile determines path qualification; the Traffic Distribution profile determines the method
of path selection and the order in which paths are considered during the selection.
3. IPSec/SSL-VPN tunnel encryption occurs if needed.
4. Packet Egress Process - QoS shaping, DSCP rewrite, and IP fragmentation are applied (if needed).
5. Transmit Packet—The firewall forwards the packet over the selected egress interface.
Now we zoom back in to examine the SD-WAN path selection logic in more detail.
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1. The firewall consults the route table during Forwarding lookup; based on the destination IP address
matching a Layer 3 prefix, the firewall determines the egress SD-WAN virtual interface. The packet is
either going directly to the public internet or going back to the hub through a secure VPN link.
2. The firewall monitors each path by performing health checks that run over a VPN tunnel. Each DIA
circuit has a VPN tunnel that monitors health information.
3. The application in the SD-WAN policy rule is associated with a Path Quality profile, and the firewall
compares the path’s actual average latency, jitter, and packet loss values to the threshold values.
4. Any path that has a higher latency, jitter, or packet loss value than the threshold is not selected.
5. All qualifying paths in the virtual SD-WAN interface are then subjected to the Traffic Distribution
profile’s method and path priority (ordering) logic. SD-WAN link tags group ISP services together, and
the order of these tags in the Traffic Distribution profile prioritizes the paths during path selection.
6. Thus, the Path Quality Profile and the Traffic Distribution profile together determine the next best path
to use and the firewall forwards the traffic out that link.
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Create a Traffic Distribution Profile
Based on your SD-WAN configuration plan, create the SD-WAN Traffic Distribution Profiles you need
based on how you want the applications in your SD-WAN policy rules to be session loaded and to fail over.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Ensure you already configured the Link Tags in an SD-WAN interface profile and committed
and pushed them. The Link Tags must be pushed to your hubs and branches in order for
Panorama™ to successfully associate the Link Tags you specify in this Traffic Distribution
profile to an SD-WAN interface profile.
STEP 3 | Select a Device Group.
STEP 4 | Create a Traffic Distribution profile.
1. Select Objects > SD-WAN Link Management > Traffic Distribution Profile.
2. Add a Traffic Distribution profile by Name using a maximum of 31 alphanumeric characters.
3. Select Shared only if you want to use this traffic distribution profile across all Device Groups (both
hubs and branches).
4. Select one traffic distribution method and add a maximum of four Link Tags that use this method for
this profile.
• Best Available Path—Add one or more Link Tags. During the initial packet exchanges, before AppID has classified the application in the packet, the firewall uses the path in the tag that has the
best health metrics (based on the order of tags). After the firewall identifies the application, it
compares the health (path quality) of the path it was using to the health of the first path (interface)
in the first Link Tag. If the original path’s health is better, it remains the selected path; otherwise,
the firewall replaces the original path. The firewall repeats this process until it has evaluated all
the paths in the Link Tag. The final path is the path the firewall selects when a packet arrives that
meets the match criteria.
When a link becomes unqualified and must fail over to the next best path, the
firewall can migrate a maximum of 1,000 sessions per minute from the unqualified
link to the next best path. For example, suppose tunnel.901 has 3,000 sessions;
2,000 of those sessions match SD-WAN policy rule A and 1,000 sessions match
SD-WAN policy rule B (both rules have a traffic distribution policy configured with
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Best Path Available). If tunnel.901 becomes unqualified, it takes three minutes to
migrate the 3,000 sessions from the unqualified link to the next best path.
• Top Down Priority—Add one or more Link Tags. The firewall distributes new sessions (that
meet the match criteria) to links using the top-to-bottom order of the Link Tags you added. The
firewall examines the first tag configured for this profile, and examines the paths that use that
tag, selecting the first path it finds that is qualified (that is at or below the Path Quality thresholds
for this rule). If no qualified path is found from that Link Tag, firewall examines the paths that use
the next Link Tag. If the firewall finds no path after examining all paths in all of the Link Tags, the
firewall uses the Best Available Path method. The first path selected is the preferred path until
one of the Path Quality thresholds for that path is exceeded, at which point the firewall again
starts at the top of the Link Tag list to find the new preferred path.
If you have only one link at the hub, that link supports all of the virtual interfaces
and DIA traffic. If you want to use the link types in a specific order, you must apply
a Traffic Distribution profile to the hub that specifies Top Down Priority, and then
order the Link Tags to specify the preferred order. If you apply a Traffic Distribution
profile that instead specifies Best Available Path, the firewall will use the link,
regardless of cost, to choose the best performing path to the branch. In summary,
Link Tags in a Traffic Distribution profile, the Link Tag applied to a hub virtual
interface, and a VPN Failover Metric in an SD-WAN Interface Profile work only
when the Traffic Distribution profile specifies Top Down Priority.
• Weighted Session Distribution—Add one or more Link Tags and then enter the Weight
percentage for each Link Tag so that the weights total 100%. The firewall performs session load
distribution between Link Tags until their percentage maximums are reached. If there is more than
one path in the Link Tag, the firewall distributes equally using round-robin until the path health
metrics are reached, and then distributes sessions to the other member(s) that are not at the limit.
If multiple physical interfaces have the same tag, the firewall distributes matching
sessions evenly among them. If all paths fail a health (path quality) threshold, the
firewall selects the path that has the best health statistics. If no SD-WAN links are
available (perhaps due to a blackout), the firewall uses static or dynamic routing to
route the matching packets.
If a packet is routed to a virtual SD-WAN interface, but the firewall cannot find a
preferred path for the session based on the SD-WAN policy’s Traffic Distribution
profile, the firewall implicitly uses the Best Available Path method to find the preferred
path. The firewall distributes any application sessions that don’t match an SD-WAN
policy rule based on the firewall’s implicit, final rule, which distributes the sessions
in round-robin order among all available links, regardless of the Traffic Distribution
profile.
If you prefer to control how the firewall distributes unmatched sessions, create a
final catch-all rule to Distribute Unmatched Sessions to specific links in the order you
specify.
5. (Optional) After adding Link Tags, use the Move Up or Move Down arrows to change the order of
tags in the list, so they reflect the order in which you want the firewall to use links for this profile and
for the selected applications in the SD-WAN policy rule.
6. Click OK.
STEP 5 | Commit and Commit and Push your configuration changes.
STEP 6 | Commit your changes.
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Create an Error Correction Profile
Forward error correction (FEC) is a method of correcting certain data transmission errors that occur
over noisy communication lines, thereby improving data reliability without requiring retransmission.
FEC is helpful for applications that are sensitive to packet loss or corruption, such as audio, VoIP, and
video conferencing. With FEC, the receiving firewall can recover lost or corrupted packets by employing
parity bits that the sending encoder embeds in an application flow. Repairing the flow avoids the need
for SD-WAN data to fail over to another path or for TCP to resend packets. FEC can also help with UDP
applications by recovering the lost or corrupt packets, since UDP does not retransmit packets.
SD-WAN FEC supports branch and hub firewalls acting as encoders and decoders. The FEC mechanism has
the encoder add redundant bits to a bitstream, and the decoder uses that information to correct received
data if necessary, before sending it to the destination.
SD-WAN also supports packet duplication as an alternative method of error correction. Packet duplication
performs a complete duplication of an application session from one tunnel to a second tunnel. Packet
duplication requires more resources than FEC and should be used only for critical applications that have low
tolerance for dropped packets.
Modern applications that have their own embedded recovery mechanisms may not need
FEC or packet duplication. Apply FEC or packet duplication only to applications that can
really benefit from such a mechanism; otherwise, much additional bandwidth and CPU
overhead are introduced without any benefit. Neither FEC nor packet duplication is helpful if
your SD-WAN problem is congestion.
FEC and packet duplication functionality require Panorama to run PAN-OS 10.0.2 or a later release and SDWAN Plugin 2.0 or a later release that is compatible with the PAN-OS release. The encoder and decoder
must both be running PAN-OS 10.0.2 or a later release. If one branch or hub is running an older software
release than what is required, traffic with an FEC or packet duplication header is dropped at that firewall.
Beginning with PAN-OS 10.0.3, FEC and packet duplication are supported in a full mesh topology, in
addition to the hub-spoke topology already supported.
Neither FEC nor packet duplication should be used on DIA links; they are only for VPN tunnel links between
branches and hubs.
To configure FEC or packet duplication on the encoder (the side that initiates FEC or packet duplication),
use Panorama to:
• Create an SD-WAN Interface Profile that specifies Eligible for Error Correction Profile interface
selection and apply the profile to one or more interfaces.
• Create an Error Correction Profile to implement FEC or packet duplication.
• Apply the Error Correction Profile to an SD-WAN policy rule and specify a single application to which
the rule applies.
• Push the configuration to encoders. (The decoder [the receiving side] requires no specific configuration
for FEC or packet duplication; the mechanisms are enabled by default on the decoder as long as the
encoder initiates the error correction.)
FEC and packet duplication support an MTU of 1,340 bytes. A packet larger than that will not
go through the FEC or packet duplication process.
STEP 1 | Log in to the Panorama Web Interface.
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STEP 2 | Configure an SD-WAN Interface Profile, where you select Eligible for Error Correction Profile
interface selection to indicate that the firewall can automatically use the interfaces (where
the SD-WAN Interface Profile is applied) for error correction. Whether this option defaults to
selected or not depends on the Link Type you select for the profile.
You can have Eligible for Error Correction Profile interface selection unchecked in a
profile and apply the profile to an expensive 5G LTE link, for example, so that costly error
correction is never performed on that link.
STEP 3 | Configure a Physical Ethernet Interface for SD-WAN and apply the SD-WAN Interface Profile
that you created to an Ethernet interface.
STEP 4 | Create an Error Correction Profile for FEC or packet duplication.
1. Select Objects > SD-WAN Link Management > Error Correction Profile.
2. Add an Error Correction profile and enter a descriptive Name of up to 31 alphanumeric characters;
for example, EC_VOIP.
3. Select Shared to make the Error Correction profile available to all device groups on Panorama and to
every virtual system on a multi-vsys hub or branch to which you push this configuration.
Panorama can reference a Shared Error Correction profile in the firewall configuration
validation and successfully commit and push the configuration to branches and hubs.
The commit fails if Panorama cannot reference an Error Correction profile.
4. Specify the Activate when packet loss exceeds (%) setting—When packet loss exceeds this
percentage, FEC or packet duplication is activated for the configured applications in the SD-WAN
policy rule where this Error Correction profile is applied. Range is 1 to 99; the default is 2.
5. Select Forward Error Correction or Packet Duplication to indicate which error correction method the
firewall uses when an SD-WAN policy rule references this SD-WAN Interface Profile; the default is
Forward Error Correction. If you select Packet Duplication, SD-WAN selects an interface over which
to send duplicate packets. (SD-WAN selects one of the interfaces you configured with Eligible for
Error Correction Profile interface selection in the prior step.)
6. (Forward Error Correction only) Select the Packet Loss Correction Ratio: 10% (20:2), 20% (20:4),
30% (20:6), 40% (20:8), or 50% (20:10)—Ratio of parity bits to data packets; the default is 10% (20:2).
The higher the ratio of parity bits to data packets that the sending firewall (encoder) sends, the higher
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the probability that the receiving firewall (decoder) can repair packet loss. However, a higher ratio
requires more redundancy and therefore more bandwidth overhead, which is a tradeoff for achieving
error correction. The parity ratio applies to the encoding firewall’s outgoing traffic. For example, if the
hub firewall parity ratio is 50% and the branch firewall parity ratio is 20%, the hub firewall will receive
20% and the branch firewall will receive 50%.
7. Specify the Recovery Duration (ms)—Maximum number of milliseconds that the receiving firewall
(decoder) can spend performing packet recovery on lost data packets using the parity packets
it received (range is 1 to 5,000; default is 1,000). The firewall immediately sends data packets it
receives to the destination. During the Recovery Duration, the decoder performs packet recovery
for any lost data packets. When the recovery duration expires, all the parity packets are released.
You configure the recovery duration in the Error Correction Profile for the encoder, which sends the
Recovery Duration value to the decoder. A Recovery Duration setting on the decoder has no impact.
Start by using the default Recovery Duration setting and adjust it if necessary, based
on your testing with normal and intermittent brown-outs.
8. Click OK.
STEP 5 | Configure an SD-WAN Policy Rule, reference the Error Correction Profile you created in the
rule, and specify a critical application to which the rule applies.
Specify only one application in the SD-WAN policy rule when configuring FEC or packet
duplication. You should not combine multiple applications in a single policy rule for FEC
or packet duplication.
STEP 6 | Commit and Commit and Push your configuration changes to the encoding firewalls (branches
and hubs).
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Configure an SD-WAN Policy Rule
An SD-WAN policy rule specifies application(s) and/or service(s) and a traffic distribution profile to
determine how the firewall selects the preferred path for an incoming packet that doesn’t belong to an
existing session and that matches all other criteria, such as source and destination zones, source and
destination IP addresses, and source user. The SD-WAN policy rule also specifies a path quality profile of
thresholds for latency, jitter, and packet loss. When one of the thresholds is exceeded, the firewall selects a
new path for the application(s) and/or service(s).
When monitoring your SD-WAN traffic, traffic originating from a source behind the hub device is evaluated
against the SD-WAN policies pushed to the hub device as it enters the hub device, and because the path
selection decision has already been made, the branch device does not evaluate the traffic against its
SD-WAN policies as it passes through the branch device to the final target device. Conversely, traffic
originating from a source behind the branch device is evaluated against the SD-WAN policies pushed to the
branch device and not by hub device. The Panorama™ management server aggregates the logs from both
the hub and branch, and for the same traffic, two session entries are displayed but only the SD-WAN device
that originally evaluated the traffic contains the SD-WAN details.
In an SD-WAN policy rule, you can reference an Error Correction profile so that you can apply Forward
Error Correction (FEC) or packet duplication for specified critical applications that have a low tolerance for
dropped or corrupted packets.
In an SD-WAN policy rule, you also specify the devices to which you want Panorama to push the rule.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Policies > SD-WAN and select the appropriate device group from the Device Group
context drop-down.
STEP 3 | Add an SD-WAN policy rule.
STEP 4 | On the General tab, enter a descriptive Name for the rule.
STEP 5 | On the Source tab, configure the source parameters of the policy rule.
1. Add the Source Zone or select Any source zone
2. Add one or more source addresses, set an external dynamic list (EDL), or select Any Source Address.
3. Add one or more source users or select any Source User.
STEP 6 | On the Destination tab, configure the destination parameters of the policy rule.
1. Add the Destination Zone or select Any destination zone.
2. Add one or more destination addresses, set an EDL, or select Any Destination Address.
STEP 7 | On the Application/Service tab, attach your SD-WAN Link Management profiles and specify
your applications and services.
PAN-OS 10.0.2 supports associating only a SaaS Quality Profile or an Error Correction
but not both. If you associate one of these profiles with an SD-WAN policy rule, you
cannot associate the other.
For example, if you associate a SaaS Quality profile with an SD-WAN policy rule, you are
unable to associate an Error Correction profile with the same SD-WAN policy rule.
1. Select the Path Quality or Create a Path Quality Profile.
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2. Select the SaaS Quality Profile or Create a SaaS Quality Profile if the branch firewall has a Direct
Internet Access (DIA) link to a SaaS application. The default is None (disabled).
3. Select the Error Correction Profile or Create an Error Correction Profile to apply forward error
correction (FEC) or packet duplication to the applications that match the SD-WAN policy rule. The
default is None (disabled).
4. Add Applications and select one or more applications from the list or select Any applications. All
applications you select are subject to the health thresholds specified in the Path Quality profile you
selected. If a packet matches one of these applications and that application exceeds one of the health
thresholds in the Path Quality profile (and the packet matches the remaining rule criteria), the firewall
selects a new preferred path.
Add only business-critical applications and applications that are sensitive to path
conditions for their usability.
If you associate a SaaS Quality profile in Adaptive mode with the SD-WAN policy, add
the specific SaaS applications you want to monitor. Using adaptive monitoring for all
applications that match the SD-WAN policy rule may impact the performance of the
SD-WAN firewall.
If you associate a SaaS Quality profile with a specified SaaS application, add the SaaS
application to the SD-WAN rule to ensure the SaaS monitoring settings are applied
only to the desired SaaS application.
5. Add Services and select one or more services from the list or select Any services. All services you
select are subject to the health thresholds specified in the Path Quality profile you selected. If a
packet matches one of these services and that service exceeds one of the health thresholds in the
Path Quality profile (and the packet matches the remaining rule criteria), the firewall selects a new
preferred path.
Add only business-critical services and services that are sensitive to path conditions
for their usability.
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STEP 8 | On the Path Selection tab, select a Traffic Distribution profile or Create a Traffic Distribution
Profile. When an incoming packet (unassociated with a session) matches all the match criteria
in the rule, the firewall uses this Traffic Distribution profile to select a new preferred path.
STEP 9 | On the Target tab, use one of the following methods to specify the target firewalls in the
device group to which Panorama pushes the SD-WAN policy rule:
• Select Any (target to all devices) (the default) to push the rule to all devices. Alternatively, select
Devices or Tags to specify the devices to which Panorama pushes the SD-WAN policy rule.
• On the Devices tab, select one or more filters to restrict the selections that appear in the Name field;
then select one or more devices to which Panorama pushes the rule, as in this example:
• On the Tags tab, Add one or more Tags and select the tag(s) to specify that Panorama push the rule
to devices that are tagged with the selected tags, as in this example:
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• If you specified Devices or Tags, you can select Target to all but these specified devices and tags
to have Panorama push the SD-WAN policy rule to all devices except for the specified devices or
tagged devices.
STEP 10 | Click OK.
STEP 11 | Commit and Commit and Push your configuration changes.
STEP 12 | (Best Practice) Create a catch-all SD-WAN policy rule to Distribute Unmatched Sessions so
that you can control which links any unmatched sessions use and view unmatched sessions in
logging and reports in the SD-WAN plugin.
If you don’t create a catch-all rule to distribute unmatched sessions, the firewall distributes
them in round-robin order among all available links because there is no traffic distribution
profile for unmatched sessions. Round-robin distribution of unmatched sessions can
increase your costs unexpectedly and result in loss of application visibility.
STEP 13 | After configuring your SD-WAN policy rules, Create a Security Policy Rule to allow traffic (for
example, bgp as an Application) from branches to the internet, from branches to hubs, and
from hubs to branches.
STEP 14 | (Optional) Configure QoS for critical applications.
If the SD-WAN applications need guaranteed bandwidth capacities or if you do not want
other applications taking bandwidth from critical business applications, create QoS rules
to control the bandwidth properly.
STEP 15 | To automatically set up BGP routing between VPN cluster members, in the SD-WAN plugin,
Configure BGP routing between branches and hubs to dynamically route traffic that will be
subject to the SD-WAN failover and load sharing.
Alternatively, if you want to manually configure BGP routing on each firewall or use a separate
Panorama template to configure BGP routing (for more control), leave the BGP information in the plugin
blank. Instead, configure BGP routing.
STEP 16 | Configure NAT for public-facing virtual SD-WAN interfaces.
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Allow Direct Internet Access Traffic Failover to
MPLS Link
At an SD-WAN branch office, the firewall performs split tunneling so that any applications having a public
IP address take the Direct Internet Access (DIA) interface to the internet, and applications having private
IP addresses that belong to the hub take the VPN interface. The firewall automatically fails over DIA
applications to the MPLS private connection to the hub when necessary, so that the traffic destined for the
internet takes an alternative path through the hub to reach the internet. To allow this to work, you must do
the following:
STEP 1 | Create an MPLS link between your branch and hub. When you create the SD-WAN Interface
profile, the link type must be MPLS for both the hub and branch.
STEP 2 | If you want the private traffic to go through the VPN tunnel, enable VPN Data Tunnel Support
in the SD-WAN Interface profile. If you disable VPN Data Tunnel Support, the private data will
go outside of the VPN tunnel.
STEP 3 | Configure an SD-WAN Policy Rule for specific applications, Create a Path Quality Profile, and
Create a Traffic Distribution Profile that specifies the Top Down Priority method. The Traffic
Distribution profile must also specify an MPLS link as one of the failover options (identified
by a tag). Verify that the applications in the SD-WAN policy rule reference the correct Path
Quality and Traffic Distribution profiles, and that the Traffic Distribution profile specifies Top
Down Priority.
After the VPN Data Tunnel Support is enabled on both the hub and branch and the MPLS link is
operational, the firewall automatically uses the MPLS connection to fail over DIA traffic when necessary.
STEP 4 | In the hub configuration, ensure the hub has a path to the internet and routing is properly set
up for the hub traffic to reach the internet.
The firewall uses the DIA virtual interface and the VPN virtual interface to ensure that the public
internet traffic is kept separate from your private traffic in the same path; that is, the internet traffic and
private traffic do not go through the same VPN tunnel. Full segmentation with proper zoning is in full
effect.
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Configure DIA AnyPath
When your SD-WAN direct internet access (DIA) links from an ISP experience a blackout or brownout, you
need those links to fail over to another link to ensure business continuity. DIA links can fail over to an MPLS
link, but you may not have an MPLS link. DIA links must be able to fail over to another link that has a direct
path or indirect path (through a hub or branch) to the internet; the DIA traffic can take any path available to
get to the internet and isn’t restricted to DIA. DIA AnyPath supports a DIA link failing over to a private VPN
tunnel going to a hub firewall to then reach the internet. Furthermore, if your topology is full mesh (branchto-branch) and there is no hub, the DIA traffic can fail over to a branch firewall to reach the internet.
DIA AnyPath requires PAN-OS 10.0.3 or a later 10.1 release and SD-WAN Plugin 2.0.1 or a later 2.0
release.
There are several use cases for wanting an internet link to fail over to a VPN tunnel (DIA AnyPath):
• You want to transition away from an expensive MPLS link to one or more public internet connections,
usually from different vendors.
• You have multiple hubs in a VPN cluster to allow a waterfall-type of failover from the primary hub to a
succession of backup hubs.
• In a split tunneling scenario, you want only a particular bandwidth-intensive application to go directly to
the internet through the branch’s DIA link instead of going back to the data center hub through the VPN
tunnel, thus saving WAN bandwidth costs. In the event of a DIA brownout or blackout, this application
traffic fails over to the data center hub to reach the internet; and if necessary can subsequently fail over
to a second hub to reach the internet.
• In a different split tunneling scenario, you want most of your internet traffic to go out the DIA link
rather than backhaul the traffic to the data center for internet breakout. However, you want specific
applications (that may need additional scanning or logging by another security device) to go back to the
data center. You create an SD-WAN policy rule to direct those applications to a primary path to the hub,
rather than the normal DIA link as determined by the default route in the firewall’s route table. In the
event of a brownout or blackout, those applications fail over to take the branch’s DIA interface.
DIA AnyPath introduces the concept of a principal virtual interface, which can include both DIA links and
nested hub virtual interfaces and branch virtual interfaces (VPN tunnels) that each include their own links.
The principal virtual interface can have a maximum of nine DIA (Ethernet) interfaces, hub virtual interfaces,
and branch virtual interfaces. You assign a Link Tag to a hub when you add the hub device to Panorama.
Assuming you use the SD-WAN plugin, Auto VPN assigns that Link Tag to the hub virtual interface, which
allows you to specify the tag in a Traffic Distribution profile to control the failover order among virtual
interfaces.
A principal virtual interface is referred to as a DIA-VIF in CLI commands.
A principal virtual interface can have interface members that belong to different Security
zones. However, the best practice is to have all member interfaces in the principal virtual
interface belong to the same Security zone. Another best practice is to have at least one
member interface in the principal virtual interface be of the link type Ethernet, Cable mode,
ADSL, Fiber, LTE, or WiFi.
The following topology example shows Branch1 with two ISP connections and an MPLS link. Branch1 also
has a Hub1 virtual interface with three VPN tunnels connecting to Hub1, and a Hub2 virtual interface
of three VPN tunnels connecting to Hub2. Branch1 also has a branch2 virtual interface with three VPN
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tunnels connecting to Branch2 and a branch3 virtual interface with three VPN tunnels connecting to
Branch3. The goal of DIA AnyPath is to configure the order in which DIA can fail over to VPN tunnels to
reach the internet directly or indirectly and thus maintain business continuity.
When you configure a principal virtual interface, it automatically becomes the default route so that internet
traffic is routed properly to any of the members of the principal virtual interface (both DIA links and VPN
tunnels). The path selection is based on SD-WAN Path Quality profiles and Traffic Distribution profiles,
which you would set to use the Top Down Priority distribution method to control the failover order. In the
example topology, a Traffic Distribution profile can list the tag for the principal virtual interface first, then
the tag for the Hub1 virtual interface, and then the tag for the Hub2 virtual interface.
Zooming in to a deeper level of failover priority, a hub virtual interface has multiple tunnel members, so you
need a way to prioritize the failover order of the members, such as prioritizing that a broadband VPN tunnel
be used before an LTE VPN tunnel. You specify the priority using the VPN Failover Metric in the SD-WAN
Interface Profile that you apply to the Ethernet interface. The lower the metric value, the higher the priority
for the tunnel to be selected upon failover. In the topology example, in the Hub1 virtual interface, a lower
VPN Failover Metric for t11 than for t12 causes internet traffic to fail over to t11 before t12. If multiple
tunnels in a virtual interface have the same metric, SD-WAN sends new session traffic to the tunnels in
round-robin fashion.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Specify the failover priority for a VPN tunnel bundled in a hub virtual interface or branch
virtual interface.
1. Select or Configure an SD-WAN Interface Profile.
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Best Practice is to configure at least one interface with the link type of Ethernet, Cable
modem, ADSL, Fiber, LTE, or WiFi.
2. You must enable VPN Data Tunnel Support.
3. Specify the VPN Failover Metric for a VPN tunnel; range is 1 to 65,535; default is 10. The lower the
metric value, the higher the priority of VPN tunnel (link) where you apply this profile.
For example, set the metric to a low value and apply the profile to a broadband interface; then create
a different profile that sets a high metric to apply to an expensive LTE interface to ensure it is used
only after broadband has failed over.
If you have only one link at the hub, that link supports all of the virtual interfaces and
DIA traffic. If you want to use the link types in a specific order, you must apply a Traffic
Distribution profile to the hub that specifies Top Down Priority, and then order the
Link Tags to specify the preferred order. If you apply a Traffic Distribution profile that
instead specifies Best Available Path, the firewall will use the link, regardless of cost,
to choose the best performing path to the branch. In summary, Link Tags in a Traffic
Distribution profile. the Link Tag applied to a hub virtual interface (Step 6 in this task),
and a VPN Failover Metric work only when the Traffic Distribution profile specifies Top
Down Priority.
4. Click OK.
STEP 3 | Configure a Physical Ethernet Interface for SD-WAN and on the SD-WAN tab, apply the SD-
WAN Interface Profile you created in the prior step.
Best Practice is to have all interfaces in the principal virtual interface belong to the same
Security zone.
STEP 4 | Repeat Steps 2 and 3 to configure additional SD-WAN Interface Profiles with a different VPN
failover metric and apply the profiles to different Ethernet interfaces to determine the order in
which failover occurs to the links.
STEP 5 | Create a Link Tag for a hub virtual interface.
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STEP 6 | Add the Link Tag to a hub that you want to participate in DIA AnyPath.
1. In Panorama > SD-WAN > Devices, Add an SD-WAN Device to add a hub to be managed by
Panorama.
2. Select the hub.
3. Select the Link Tag that you created in the prior step, which Auto VPN applies to the whole
hub virtual interface, not an individual link. Thus, you can reference this Link Tag in the Traffic
Distribution Profile to indicate the hub virtual interface for the failover order for DIA AnyPath. On
the branch device, Auto VPN uses this tag to populate the Link Tag field on the SD-WAN virtual
interface that terminates on the hub device.
4. Click OK.
STEP 7 | Repeat Steps 5 and 6 to create a Link Tag for each hub virtual interface and add the tag to each
hub that will participate in DIA AnyPath. Do the same for any branch virtual interface.
STEP 8 | Create a Traffic Distribution Profile to implement DIA AnyPath.
1. Create a Traffic Distribution Profile.
2. Select Top Down Priority.
3. Add the Link Tags so they appear in the order that you want their associated links used for failover.
For example, if your use case is for certain applications to use DIA first, list the DIA tag first, then
a hub virtual interface tag, then a second hub virtual interface tag. If your use case is for certain
applications to first go to the hub and then the internet, list a hub virtual interface first, then perhaps
a second hub virtual interface, and list a DIA tag last. If you have full mesh with no hub, use the DIA
tag and branch virtual interface tags in the order you want.
STEP 9 | Create identically named SaaS Quality profiles for both the hub and branch firewalls.
Two identically named SaaS Quality profiles must be configured on the hub and branch firewalls to
successfully leverage the hub firewall as an alternative failover.
The easiest way to configure failover to a hub firewall with the same SaaS application destination is to
create a single SaaS Quality profile in the Shared device group. Alternatively, you can create two SaaS
Quality profiles with identical names in different device groups and push them to your hub and branch
firewalls.
To failover to a hub firewall with different SaaS application destinations, create two SaaS Quality profiles
with identical names each pointing to a different SaaS application destination in different device groups
and push them to your hub and branch firewalls.
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You must also create an SD-WAN policy rule that references this SaaS Quality profile in
order to allow the hub to advertise link quality statistics for the SaaS Quality profile to the
branch. Doing so will provide end-to-end SaaS monitoring through the hub. Without this
SD-WAN policy rule, you would have only the link measurements from the branch to the
hub, but not from the hub to the SaaS application.
STEP 10 | Allow the hubs to participate in DIA AnyPath.
1. Create a VPN Cluster and select a hub.
2. Select Allow DIA VPN for the hub. A maximum of four hubs in a VPN cluster can participate in DIA
AnyPath. If they are HA hubs, a total of eight hubs are supported. If you Allow DIA VPN for one HA
peer in a pair, you must also enable it for the other HA peer.
STEP 11 | Create an SD-WAN policy rule for specific application(s) to use DIA AnyPath.
1. Configure an SD-WAN Policy Rule.
2. On the Application/Service tab, specify the applications and services for which you want to
implement DIA AnyPath.
3. Associate the SaaS Quality Profile you created in the previous step.
If you are configuring a SaaS Quality profile with different SaaS application destination, you must
associate the SaaS Quality profile with the SD-WAN policy rule in each branch and hub device group.
4. On the Path Selection tab, select the Traffic Distribution Profile you created for the applications.
STEP 12 | Route new sessions that don’t match any SD-WAN policy rule and sessions that arrive during
a Panorama or firewall configuration change.
1. Create an appropriate Path Quality profile and Traffic Distribution profile to handle such sessions.
2. Configure an SD-WAN Policy Rule that is a catch-all rule for these sessions.
3. Place the rule last in the list.
STEP 13 | Commit and Push to Devices.
STEP 14 | Create a Security Policy Rule to allow DIA traffic to the Destination Zones named zoneinternet and zone-to-hub and specify the Applications subject to the rule. Commit and
push to the branches.
STEP 15 | Use the following CLI commands to monitor DIA information:
1. show sdwan connection <dia-vif-name>
2. show sdwan path-monitor stats dia-vif all
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3. show sdwan path-monitor dia-anypath
4. show sdwan path-monitor dia-anypath packet-buffer all
5. show sdwan path-monitor stats conn-idx <IDX>
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Distribute Unmatched Sessions
The firewall attempts to match sessions that arrive at an SD-WAN virtual interface to an SD-WAN policy
rule; the firewall examines the SD-WAN policy rules in order from the top down, just as it does for Security
policy rules.
• If there is an SD-WAN rule match, the firewall executes the path monitoring and traffic distribution for
that SD-WAN policy rule.
• If there is no match to any SD-WAN policy rule in the list, the session matches an implied SD-WAN
policy rule at the end of the list that uses the round-robin method to distribute unmatched sessions
among all links in one SD-WAN interface, which is based on the route lookup.
Furthermore, if there is no SD-WAN policy rule for a specific application, the firewall doesn’t track that
application’s performance in the SD-WAN-specific visibility tools such as logging and reports in the SDWAN plugin.
To illustrate the implied policy rule:
• Suppose the firewall has three SD-WAN policy rules: one rule specifies five voice applications, one rule
specifies six video conferencing applications, and one rule specifies ten SaaS applications.
• A session, for example, a video application session, arrives at the firewall and doesn’t match any of the
SD-WAN policy rules. Because the session didn’t match a rule, the firewall has no path quality profile or
traffic distribution profile to apply to the session.
• Therefore, firewall matches the video application to the implied rule and distributes each video session
among all of the available SD-WAN link tags and their associated links on the firewall, which could be
two broadband links, an MPLS link, and an LTE link. Session 1 goes to one member of the broadband
interface, session 2 goes to another member of the broadband interface, session 3 goes to MPLS,
session 4 goes to LTE, session 5 goes to the first member of the broadband interface, session 6 goes to
the second member of the broadband interface, and the round-robin distribution continues.
You may not want to let your unmatched sessions resort to matching the implied SD-WAN rule because
you have no control over that session distribution. Instead, we recommend you create a catch-all SD-WAN
policy rule and place it last in the list of SD-WAN policy rules. A catch-all SD-WAN policy rule lets you:
• Control which links the unmatched sessions use.
• View all of the applications on the firewall (including unmatched application sessions) in logging and
reports in the SD-WAN plugin.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Create a Path Quality Profile that sets very high latency, jitter, and packet loss thresholds that
will never be exceeded. For example, 2,000ms latency, 1,000ms jitter, and 99% packet loss.
STEP 3 | Create a Traffic Distribution Profile that specifies the SD-WAN link tags you want to use, in
the order in which you want the links associated with those link tags to be used by unmatched
sessions.
If you don’t want unmatched applications to use a specific path (physical interface) at all,
omit the tag that includes that link from the list of link tags in the traffic distribution profile.
For example, if you don’t want an unmatched application such as movie streaming to use
the expensive LTE link, omit the link tag for the LTE link from the list of link tags in the
traffic distribution profile.
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STEP 4 | Add a catch-all SD-WAN policy rule and on the Application/Service tab, specify the Path
Quality Profile that you created.
STEP 5 | Select Any for the Applications and Service.
STEP 6 | On the Path Selection tab, select the Traffic Distribution Profile you created.
STEP 7 | Move the rule down to the last position in the list of SD-WAN policy rules.
STEP 8 | Commit and Commit and Push your configuration changes.
STEP 9 | Commit your changes.
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Add SD-WAN Devices to Panorama
Add a single SD-WAN hub or branch firewall or use a CSV to bulk import multiple SD-WAN hub and branch
firewalls.
• Add an SD-WAN Device
• Bulk Import Multiple SD-WAN Devices
Add an SD-WAN Device
Add an SD-WAN hub or branch firewall to be managed by the Panorama™ management server. When
adding your devices, you specify what type of device it is (branch or hub) and you give each device its site
name for easy identification. Before adding your devices, plan your SD-WAN configuration to ensure you
have all the required IP addresses and that the SD-WAN topology is well understood. This helps in reducing
any configuration errors.
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If you have pre-existing zones for your Palo Alto Networks firewalls, you will be mapping them to the
predefined zones used in SD-WAN.
If you want to have Active/Passive HA running on two branch firewalls or two hub firewalls,
do not add those firewalls as SD-WAN devices at this time. You will add them as HA peers
separately when you Configure HA Devices for SD-WAN.
If you are using BGP routing, you must add a security policy rule to allow BGP from the
internal zone to the hub zone and from the hub zone to the internal zone. If you want to use
4-byte ASNs, you must first enable 4-byte ASNs for the virtual router.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Panorama > SD-WAN > Devices and Add a new SD-WAN firewall.
STEP 3 | Select the managed firewall Name to add as an SD-WAN device. You must add your SD-WAN
firewalls as managed devices before you can add them as an SD-WAN device.
STEP 4 | Select the Type of SD-WAN device.
• Hub—A centralized firewall deployed at a primary office or location to which all branch devices
connect using a VPN connection. Traffic between branches passes through the hub before continuing
to the target branch, and connects branches to centralized resources at the hub location. The hub
device processes traffic, enforces policy rules, and manages link swapping at the primary office or
location.
• Branch—A firewall deployed at a physical branch location that connects the hub using a VPN
connection and provides security at the branch level. The branch device processes traffic, enforces
policy rules, and manages link swapping at the branch location.
STEP 5 | Select the Virtual Router Name to use for routing between the SD-WAN hub and branches.
By default, an sdwan-default virtual router is created and enables Panorama to automatically
push router configurations.
STEP 6 | Enter the SD-WAN Site name to identify the geographical location or purpose of the device.
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The SD-WAN Site name supports all upper-case and lower-case alphanumerical and
special characters. Spaces are not supported in the Site name and result in monitoring
(Panorama > Monitoring) data for that site not to be displayed.
If you are adding an HA pair, you must use the same Site name for the two peers.
STEP 7 | (PAN-OS 10.0.3 and later 10.1 releases) Select the Link Tag you created for the hub virtual
interface (or branch virtual interface), which Auto VPN will assign to the virtual interface. You
will use this Link Tag in a Traffic Distribution profile to allow the hub (or branch) to participate
in DIA AnyPath.
STEP 8 | If you are adding a hub that is behind a device performing NAT for the hub, you must specify
the IP address or FQDN of the public-facing interface on that upstream NAT-performing
device, so that Auto VPN Configuration can use that address as the tunnel endpoint of the hub.
It is the IP address that the branch office’s IKE and IPSec flows must be able to reach. (You
must have already configured a physical Ethernet interface for SD-WAN.)
1. On the Upstream NAT tab, enable Upstream NAT.
2. Add an SD-WAN interface; select an interface you already configured for SD-WAN.
3. Select IP Address or FQDN and enter the IPv4 address without a subnet mask (for example,
192.168.3.4) or the FQDN of the upstream device, respectively.
4. Click OK.
Additionally, on the upstream device that is performing NAT you must set up the
inbound Destination NAT with a one-to-one NAT policy, and you must not configure
port translation to the IKE or IPSec traffic flows.
If the IP address on the upstream device changes, you must configure the new IP
address and push it to the VPN cluster. You must use the CLI commands clear
ipsec, clear ike-sa, and clear session all on both the branch and hub.
You must also clear session all on the virtual router where you configured the
NAT policy for the IP addresses.
Upstream NAT is not supported on Layer 2 interfaces.
STEP 9 | (PAN-OS 10.0.3 and later 10.1 releases) If you are adding a branch that is behind a device
performing NAT for the branch, you must specify the IP address or FQDN of the public-facing
interface on that upstream NAT-performing device, or select DDNS to indicate that the IP
address for the interface on the NAT device is obtained from the Palo Alto Networks DDNS
service. Thus, Auto VPN Configuration uses that public IP address as the tunnel endpoint for
the branch. It is the IP address that the branch office’s IKE and IPSec flows must be able to
reach. (You must have already configured a physical Ethernet interface for SD-WAN.)
1. On the Upstream NAT tab, enable Upstream NAT.
2. Add an SD-WAN interface; select an interface you already configured for SD-WAN.
3. If you select the NAT IP Address Type to be Static IP, select IP Address or FQDN and enter the IPv4
address without a subnet mask (for example, 192.168.3.4) or the FQDN of the upstream device,
respectively.
4. Alternatively, select the NAT IP Address Type to be DDNS.
5. Click OK.
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Additionally, on the upstream device that is performing NAT you must set up the
inbound Destination NAT with a one-to-one NAT policy, and you must not configure
port translation to the IKE or IPSec traffic flows.
If the IP address on the upstream device changes, you must configure the new IP
address and push it to the VPN cluster. You must use the CLI commands clear
ipsec, clear ike-sa, and clear session all on both the branch and hub. You
must also clear session all on the virtual router where you configured the NAT
policy for the IP addresses.
There is a second location in the UI where you can configure Upstream NAT for
a branch, but the following location is not preferred and you should not configure
Upstream NAT for a branch in both places. The secondary, non-preferred location to
configure Upstream NAT is on Panorama at Network > Interfaces > Ethernet, select
a template in the Template field, select an Ethernet interface, and select the SDWAN tab. At this point you can Enable Upstream NAT, and select a NAT IP Address
Type. This second method takes precedence. If Upstream NAT is first configured for
the Ethernet interface on Panorama through the template stack, then the SD-WAN
plugin will not change the settings, even if you use different settings on the plugin
device configuration page. Only if there is no Upstream NAT configured on Panorama
through the template stack, then the plugin configuration for Upstream NAT takes
effect.
Upstream NAT is not supported on Layer 2 interfaces.
STEP 10 | (Required for pre-existing customers) Map your pre-existing zones to predefined zones used for
SD-WAN.
When you map your existing zones to an SD-WAN zone, you must modify your security
policy rules and add the SD-WAN zones to the correct Source and Destination zones.
1.
2.
3.
4.
Select Zone Internet and Add the pre-existing zones that will egress SD-WAN traffic to the internet.
Select Zone to Hub and Add the pre-existing zones that will egress SD-WAN traffic to the hub.
Select Zone to Branch and Add the pre-existing zones that will egress SD-WAN traffic to the branch.
Select Zone Internal and Add the pre-existing zones that will egress SD-WAN traffic to an internal
zone.
STEP 11 | (Optional) Configure Border Gateway Protocol (BGP) routing.
To automatically set up BGP routing between the VPN cluster members, enter the BGP information
below. If you want to manually configure BGP routing on each firewall or use a separate Panorama
template to configure BGP routing for more control, leave the BGP information below blank.
Before implementing SD-WAN with BGP routing in an environment where BGP is already
in use, ensure that the BGP configuration generated by the SD-WAN plugin doesn’t
conflict with your existing BGP configuration. For example, you must use the existing
BGP AS number and router ID values for the corresponding SD-WAN device values.
1. Select the BGP tab and enable BGP to configure BGP routing for SD-WAN traffic.
2. Enter the BGP Router ID, which must be unique among all routers.
3. Specify a static IPv4 Loopback Address for BGP peering. Auto VPN configuration automatically
creates a Loopback interface with the same IPv4 address that you specify. If you specify an existing
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loopback address, the commit will fail, so you should specify an IPv4 address that is not already a
loopback address.
4. Enter the AS Number. The autonomous system number specifies a commonly defined routing policy
to the internet. The AS number must be unique for every hub and branch location.
5. Disable the Remove Private AS option (the default is enabled) if you have endpoints that need to
exchange routes with a hub or branch firewall in an SD-WAN BGP topology and therefore you don’t
want to remove private AS numbers (64512 to 65534) from the AS_PATH attribute in BGP Updates.
In this case, you want to allow the private AS numbers to leave the SD-WAN private AS in BGP
Updates.
The Remove Private AS setting applies to all BGP peer groups on the branch or hub
firewall. If you need this setting to differ among BGP peer groups or peers, you must
configure the setting outside of the SD-WAN plugin.
If you change the Remove Private AS setting, commit to all SD-WAN cluster nodes,
and subsequently downgrade to an SD-WAN Plugin version earlier than 2.0.2, then
all configuration related to Remove Private AS must be done outside of the SD-WAN
plugin or directly on the firewalls.
6. Enter Prefix(es) to Redistribute. On a hub device, you must enter at least one prefix to redistribute.
Branch devices do not have this option; subnets connected to branch locations are redistributed by
default.
STEP 12 | Click OK.
STEP 13 | Select Group HA Peers at the bottom of the screen to display branches (or hubs) that are HA
peers together.
STEP 14 | Have Panorama create and push to firewalls a Security policy rule that allows BGP to run
between branches and hubs.
1. Select BGP Policy at the bottom of the screen and Add.
2. Enter a Policy Name for the Security policy rule that Panorama will automatically create.
3. Select Device Groups to specify the device groups to which Panorama pushes the Security policy
rule.
4. Click OK.
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STEP 15 | Select Push to Devices to push your configuration changes to your managed firewalls.
Bulk Import Multiple SD-WAN Devices
Add multiple SD-WAN devices to quickly onboard branch and hub firewalls, rather than manually adding
each device one at a time. When adding your devices, you specify what type of device it is (branch or hub)
and you give each device its site name for easy identification. Before adding your devices, plan your SDWAN configuration to ensure you have all the required IP addresses and that the SD-WAN topology is well
understood. This helps reduce any configuration errors.
If you want to have Active/Passive HA running on two branch firewalls or two hub firewalls,
do not add those firewalls as SD-WAN devices in your CSV file. You will add them as HA
peers separately when you Configure HA Devices for SD-WAN.
If you are using BGP routing, you must add a security policy rule to allow BGP from the
internal zone to the hub zone and from the hub zone to the internal zone. If you want to
use 4-byte autonomous system numbers (ASNs), you must first enable 4-byte ASNs for the
virtual router.
If you have pre-existing zones for your Palo Alto Networks firewalls, you will be mapping them to the
predefined zones used in SD-WAN.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Panorama > SD-WAN > Devices > Device CSV and Export an empty SD-WAN device
CSV. The CSV allows you to import multiple branch and hub devices at once, rather than
adding each device manually.
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STEP 3 | Populate the SD-WAN device CSV with the branch and hub information and save the CSV.
All fields are required unless noted otherwise. You must enter the following for each hub and
branch:
• device-serial—The serial number of the branch or hub firewall.
• type—Specify whether the device is a branch or a hub.
• site—Enter the SD-WAN device site name to help you identify the geographical location or purpose
of the device.
The SD-WAN Site name supports all upper-case and lower-case alphanumerical and
special characters. Spaces are not supported in the Site name and result in monitoring
(Panorama > SD-WAN > Monitoring) data for that site not to be displayed.
• (Required for pre-existing customers) Map your pre-existing zones to predefined zones used for SDWAN.
When you map your existing zones to an SD-WAN zone, you must modify your
security policy rules and add the SD-WAN zones to the correct Source and Destination
zones.
• zone-internet—Enter the names of pre-existing zones that SD-WAN traffic will egress to reach
the internet.
• zone-to-branch —Enter the names of pre-existing zones that SD-WAN traffic will egress to reach
a branch.
• zone-to-hub—Enter the names of pre-existing zones that SD-WAN traffic will egress to reach a
hub.
• zone-internal—Enter the names of pre-existing zones that SD-WAN traffic will egress to reach an
internal zone.
• (Optional) loopback-address—Specify a static loopback IPv4 address for Border Gateway Protocol
(BGP) peering.
• (Optional) prefix-redistribute—Enter IP prefixes that the branch informs the hub it can reach. To add
more than one prefix, separate prefixes with a space, an ampersand (&), and a space; for example,
192.2.10.0/24 & 192.168.40.0/24. By default, the branch firewall advertises all locally connected
internet prefixes to the hub.
Palo Alto Networks does not redistribute the branch office default route(s) learned
from the ISP.
• (Optional) as-number—Enter the ASN of the private AS to which the virtual router on the hub or
branch belongs. The SD-WAN plugin supports only private autonomous systems. The ASN must
be unique for every hub and branch. The 4-byte ASN range is 4,200,000,000 to 4,294,967,294 or
64512.64512 to 65535.65534. The 2-byte ASN range is 64512 to 65534.
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Use a 4-byte private ASN.
Before implementing SD-WAN with BGP routing in an environment where BGP is
already in use, ensure that the BGP configuration generated by the SD-WAN plugin
doesn’t conflict with your existing BGP configuration. For example, you must use the
existing BGP AS number and router ID values for the corresponding SD-WAN device
values.
• (Optional) router-id—Specify the BGP router ID, which must be unique among all virtual routers.
Enter the Loopback Address as the router ID.
Before implementing SD-WAN with BGP routing in an environment where BGP is
already in use, ensure that the BGP configuration generated by the SD-WAN plugin
doesn’t conflict with your existing BGP configuration. For example, you must use the
existing BGP AS number and router ID values for the corresponding SD-WAN device
values.
• vr-name—Enter the name of the virtual router to use for routing between the SD-WAN hub and
branches. By default, Panorama creates an sdwan-default virtual router and can automatically
push router configurations.
STEP 4 | Import the SD-WAN device CSV into Panorama.
Verify that there are no pending commits on Panorama or the import fails.
1. On Panorama, Select Panorama > SD-WAN > Devices > Device CSV and Import the CSV you edited
in the previous step.
2. Browse and select the SD-WAN device CSV.
3. Click OK to import the SD-WAN devices.
STEP 5 | Verify that your SD-WAN devices were successfully added.
STEP 6 | Commit your configuration changes.
STEP 7 | Select Push to Devices to push your configuration changes to your managed firewalls.
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Configure HA Devices for SD-WAN
You can configure two branches or two hubs in active/passive HA mode to be part of your SD-WAN
environment. In this case, Panorama™ needs to push the same configuration to the active peer and the
passive peer, rather than treat the two firewalls individually. To make that happen, you configure active/
passive HA before adding the devices for SD-WAN, so that Panorama is aware the devices are HA peers
and pushes the same configuration to them.
Read through the following procedure before you begin so you don’t Commit after adding
your HA peers as SD-WAN devices.
STEP 1 | Before you enable SD-WAN on your HA peers, configure Active/Passive HA on two firewall
models that support SD-WAN.
STEP 2 | Add the HA peers as SD-WAN devices, but don’t perform the last step to Commit.
STEP 3 | In Panorama, select Panorama > Managed Devices > Summary.
STEP 4 | At the bottom of the screen, select Group HA Peers. Confirm that under the Status display, the
HA Status column includes the two firewalls, one Active and one Passive. Panorama is aware
of the HA status and will push the same SD-WAN configuration to the two HA peers when you
commit.
STEP 5 | Commit and Commit and Push.
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Create a VPN Cluster
In your SD-WAN configuration, you must configure one or more VPN clusters to determine which branches
communicate with which hubs and creates a secure connection between the branch and hub devices. VPN
clusters are logical groupings of devices, so consider things such as geographical location or function when
logically grouping your devices.
®
PAN-OS supports both hub-spoke and full mesh SD-WAN VPN topologies. In a hub-spoke topology,
a centralized firewall hub at a primary office or location acts as the gateway between branch devices.
The hub-to-branch connection is a VPN tunnel. In this configuration, traffic between branches must pass
through the hub.
The first time you Configure a Virtual SD-WAN Interface with direct internet access (DIA) links for
an SD-WAN hub or branch firewall, a VPN cluster called autogen_hubs_cluster is automatically
created and the SD-WAN firewall is automatically added to the VPN cluster. This allows the Panorama™
management server to Monitor SD-WAN Application and Link Performance for devices that are protected
by the SD-WAN firewall and accessing resources outside of your corporate network. Additionally,
any SD-WAN firewall with DIA links that you configure in the future are automatically added to the
autogen_hubs_cluster VPN cluster containing all hubs and branches with DIA links to allow Panorama
to monitor application and link performance. The autogen_hubs_cluster is purely for monitoring
application and link health, and not to create VPN tunnels between the hubs and branches with DIA links. If
you need to connect hubs and branches with VPN tunnels, you must create a new VPN cluster and add all
the required hubs and branches to that cluster.
A strong, random IKE preshared key is created for all hubs and branches in the VPN cluster to secure the
VPN tunnels, and each firewall has a master key that encrypts the preshared key. The system secures the
preshared key, even from the administrator. You can refresh the IKE preshared key, which Panorama sends
to all members of the cluster.
Refresh the preshared key when cluster members are not busy.
After the SD-WAN Plugin is upgraded to 2.1.0, the hub and branch firewalls in a single VPN cluster must all
run either PAN-OS 10.0.x or 10.1.0, not a combination of the two releases.
STEP 1 | Plan your branch and hub VPN topology to determine which branches communicate with each
of your hubs. For more information, see Plan Your SD-WAN Configuration.
STEP 2 | Log in to the Panorama Web Interface.
STEP 3 | Specify IP address ranges for the IPSec VPN tunnels that Auto VPN configuration creates.
Auto VPN configuration creates a VPN tunnel between a hub and branches and assigns
IP addresses to the tunnel endpoints. Enter subnet ranges that you want Auto VPN to use
as VPN tunnel addresses.You can enter up to 20 IP prefix/netmask ranges. Auto VPN
draws from that pool for VPN tunnel addresses, drawing from the largest range first (and
the drawing from the next largest range when necessary). You must configure at least
one range for the pool. If you don’t perform this step before pushing the configuration to a
hub or branch, the Commit and Push will fail.
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If you upgrade from an earlier SD-WAN Plugin release, you must check that your ranges
are still correct. If it is not, enter new ranges. After you Commit, all tunnels are dropped
and new tunnels are used, so perform this task during a time you have low traffic.
1. Select Panorama > SD-WAN > VPN Clusters.
2. At the bottom of the screen, select VPN Address Pool.
3. Add one or more (up to 20) Member IP address and netmask ranges, for example, 192.168.0.0/16.
4. Click OK.
STEP 4 | Configure the VPN cluster. Repeat this step to create VPN clusters as needed.
1. Select Panorama > SD-WAN > VPN Clusters and Add a VPN cluster.
2. Enter a descriptive name for the VPN cluster.
Underscores and spaces are not supported in the VPN cluster name and result
in monitoring (Panorama > SD-WAN > Monitoring) data for the cluster not to be
displayed. Choose the name of the VPN cluster carefully so you do not need to
change the name in the future. SD-WAN monitoring data is generated based on the
old cluster name and cannot be reconciled to a new cluster name, and will cause
issues with the number of reported clusters when monitoring your VPN clusters or
generating reports.
3. Select the VPN cluster Type.
Only Hub-Spoke VPN cluster type is supported in PAN-OS 10.0.2 and earlier 10.1
releases. Beginning with PAN-OS 10.0.3, you can Create a Full Mesh VPN Cluster
with DDNS Service.
4. Add one or more branch devices that you determined need to communicate with each other.
• Select Group HA Peers to display the branch devices that are HA peers together.
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• Select the branch devices to add to the cluster.
• Click OK.
5. Add one or more hub devices that you determined need to communicate with the branch devices.
Up to four SD-WAN hub firewalls can be added to a VPN cluster. SD-WAN hubs in an HA
configuration are considered as a single SD-WAN hub firewall.
MPLS and satellite link types will form tunnels with only the same link type; for
example, MPLS-to-MPLS and satellite-to-satellite. Tunnels will not be created between
an MPLS link and an Ethernet link, for example.
• Select Group HA Peers to display the hub devices that are HA peers together.
• Select the hubs to add to the cluster and click OK.
• For any new or previously existing VPN cluster that has more than one hub, you must prioritize
the hubs to determine a) that traffic be sent to a particular hub, and b) the subsequent hub
failover order. The hub failover priority range is 1 to 4. If you upgrade, the default priority is set
to 4. The plugin internally translates the hub failover priority to a BGP local preference number
as shown in the following table. The lower the priority value, the higher the priority and local
preference. A cluster supports a maximum of four hubs. An active/passive HA pair counts as one
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hub. Multiple hubs can have the same priority; an HA pair must have the same priority. Panorama
uses the branch’s BGP template to push the local preference of the hubs to the branches in the
cluster.
Hub Failover Priority
Local Preference
1
250
2
200
3
150
4
100
If multiple hubs have the same priority, Panorama enables ECMP in two places on
each branch firewall to determine how branches select the path. ECMP is enabled
for the virtual router (Network > Virtual Routers > ECMP) and ECMP Multiple AS
Support is enabled for BGP (Network > Virtual Routers > BGP > Advanced).If all
hubs in the cluster have a unique priority, ECMP is disabled on the branches. If a
hub priority configuration changes, Panorama reevaluates whether to enable or
disable ECMP.
• If you selected Group HA Peers, select the pair and click in the Hub Failover Priority field;
enter a single Priority (range is 1 to 4), which applies to both hubs in the HA pair, and click OK.
The Hub Failover Priority for HA Peers window appears only for configured HA
pairs. If you add a new HA pair, you must configure the Hub Failover Priority for
each of the two new peers independently.
You will get an error message if you assign different priorities to hubs that are
ungrouped HA peers and then you select Group HA Peers and Submit.
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• For hubs that are not HA pairs, select a hub and click in the Hub Failover Priority field; enter a
priority (range is 1 to 4).
6. Click OK to save the VPN cluster.
STEP 5 | Advertise additional prefixes at the branch to the hub.
The firewall automatically redistributes (advertises) all non-public, connected routes from
the branch to the hub. You can also redistribute any additional prefixes from the branch
to the hub. The Prefix(es) to Redistribute field accepts a list of prefixes, rather than just a
single prefix.
1. Select Panorama > SD-WAN > Devices and select a branch firewall.
2. Select BGP and Add one or more IP addresses with netmask to Prefix(es) to Redistribute.
3. Click OK.
STEP 6 | Commit and Commit to Panorama.
STEP 7 | (SD-WAN Plugin 2.0.1 and later 2.0 releases) If your hub firewalls in a hub-spoke VPN cluster have
DHCP or PPPoE interfaces, you must use DDNS. Select Network > Interfaces > Ethernet and
in the Template field, select Template-stack for a hub.
STEP 8 | (SD-WAN Plugin 2.0.1 and later 2.0 releases) Select the interfaces whose IP address indicates
Dynamic-DHCP Client or PPPOE, click Override on the bottom of the screen, and click OK to
close.
STEP 9 | (SD-WAN Plugin 2.0.1 and later 2.0 releases) Verify on Panorama that the DDNS settings were
configured.
1. Select Network > Interfaces > Ethernet and select the same interface again.
2. Select Advanced > DDNS.
3. See that the DDNS settings were automatically configured with a Hostname and the Vendor set to
Palo Alto Networks DDNS.
4. Click OK.
STEP 10 | (SD-WAN Plugin 2.0.1 and later 2.0 releases) Commit and Commit to Panorama.
STEP 11 | Push the configuration to the hub(s).
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When Panorama creates virtual SD-WAN interfaces for hubs, Panorama doesn't
necessarily create the interfaces using contiguous interface numbers. It might randomly
skip an interface number, for example, sdwan.921, sdwan.922, sdwan.924, sdwan.925.
Despite the discontiguous numbering, Panorama creates the correct number of SD-WAN
interfaces. Use the operational CLI command show interface sdwan? to see the SDWAN interfaces.
1. Select Commit and Push to Devices.
2. Edit Selections on the lower left side of the screen.
3. Deselect Filter Selected.
4. Click on Deselect All.
5. Select your hub Device Group. Select Include Device and Network Templates at the bottom of the
screen. You must push to hubs before pushing to branches.
Most branches have dynamic IP addresses through their service providers, so branches must initiate
the IKE/IPSec connection because the hub doesn’t have the branches’ IP address.To ensure that the
hub is ready to receive the IKE/IPSec connections, the hub’s configuration must be committed and
pushed before the branch’s configuration. Thus, when the branch configurations are pushed and the
branches initiate the connection to the hub, the hub is ready.
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6. Select the Templates tab and Deselect All.
7. The Push Scope is the Device Group. Push the configuration to the hub(s).
STEP 12 | Push the configuration to the branch(es) by repeating the prior step, but selecting your branch
Device Group.
STEP 13 | Refresh the IKE preshared key.
If you need to change the current IKE key that is used to secure the IPSec connections
between VPN cluster devices, perform this step to randomly generate a new key for the
cluster.
Perform this step when cluster members are not busy.
1. Select Panorama > SD-WAN > VPN Clusters and select a cluster.
2. At the bottom of the screen, select Refresh IKE Key.
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3. A message appears notifying you that Refreshing the IKE key will generate a new
security association (SA) for every SD-WAN firewall in the VPN cluster.
This may cause a service disruption. Do you wish to continue? Yes | No
Select Yes if you wish to continue.
4. Commit.
After you Refresh IKE Key, you must commit to the entire cluster; a partial commit will
bring down tunnels.
5. Push to Devices.
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Create a Full Mesh VPN Cluster with DDNS
Service
Beginning with PAN-OS 10.0.3, SD-WAN supports a full mesh topology, in addition to the hub-spoke
topology. The mesh can consist of branches with or without hubs. Use full mesh when the branches need
to communicate with each other directly. Examples of use cases for full mesh include retailers that have
branches and hubs, and enterprises that operate with or without hubs.
Some firewall interfaces use DHCP to get their IP address. Branch offices often use a consumer-grade
internet service and receive a dynamic IP address, which of course can change. For this reason, the firewalls
require Dynamic DNS (DDNS) so that a DDNS service can detect the public-facing IP address of the firewall
interface that is running SD-WAN. When you push the DDNS setting to all firewalls, that notifies each
firewall to register its external interface IP address with the Palo Alto Networks DDNS cloud service so that
the IP address is converted to an FQDN.
DDNS is also required because the CPE device from the ISP may be performing source NAT. (The dynamic
IP address may or may not be source-NAT translated). The DDNS service allows the firewall to register
the public-facing IP address with the DDNS server. When you have devices connect for branch-to-branch
mesh, Auto VPN contacts the DDNS service for those firewalls to pull their public IP addresses that are
registered in the DDNS cloud and uses those public IP addresses to create the IKE peering and the VPN
tunnels. If the CPE device is performing source NAT, when you add an SD-WAN branch device to be
managed by Panorama, you will enable Upstream NAT and the NAT IP Address Type will be DDNS.
For the CPE device or upstream routing device using source NAT, you are responsible for
creating the one-to-one destination NAT rule (with no port translation) on that device to
translate the external IP address back to the private IP address assigned to the firewall’s
interface. This translation allows the IKE and IPSec protocols to come back into the firewall.
(Palo Alto Networks doesn’t have access rights to the upstream CPE or upstream router that
is performing source NAT.)
SD-WAN full mesh with DDNS service requires the following:
• PAN-OS 10.0.3 or a later 10.1 release
• SD-WAN Plugin 2.0.1 or a later 2.0 release
• ZTP Plugin 1.0.1 or a later 1.0 release that is downloaded, installed, and configured in order to leverage
the DDNS that is associated with ZTP. Panorama must be ZTP-registered and communicating with the
ZTP Service.
• Applications and Threats Content Release Version 8354 or a later version
• All firewalls participating in full mesh DDNS must be registered under the same Customer Support Portal
(CSP) account.
• All firewalls participating in full mesh DDNS must have the latest device certificate installed. Properly
authenticating the firewalls, Panorama, and the cloud services are important security procedures that
require the device certificate, and the CSP and ZTP services.
• If you have a firewall or other network device that controls outgoing traffic positioned in front of the
Palo Alto Networks firewall, you must change the configuration on that device to allow traffic from the
DDNS-enabled interfaces to the following FQDNs:
• https://myip.ngfw-ztp.paloaltonetworks.com/
• https://ngfw-ztp.paloaltonetworks.com/
(to reach whatsmyIP service)
(to reach DDNS registration service)
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STEP 1 | Install the latest device certificate for Panorama and for all managed firewalls that are hubs or
branches.
STEP 2 | Install ZTP Plugin 1.0.1 to set up Zero Touch Provisioning.
1.
2.
3.
4.
In the Panorama Administrator’s Guide, read the ZTP Overview.
Install the ZTP Plugin.
Configure the ZTP Installer Administrator Account.
Select Panorama > Zero Touch Provisioning > Setup and edit the General settings to enable Dynamic
IP Registration.
5. Click OK. The General settings indicate On ZTP Service with a Tenant ID number.
6. Select ZTP Service Status and confirm that the firewall Serial Number is listed.
STEP 3 | If you haven’t already done so, install the SD-WAN Plugin 2.0.1 or a later 2.0 release.
STEP 4 | Commit on Panorama.
STEP 5 | Log in to the Panorama Web Interface.
STEP 6 | Create the VPN Address Pool as shown in Create a VPN Cluster.
STEP 7 | Create the full mesh VPN cluster.
1.
2.
3.
4.
5.
Select Panorama > SD-WAN > VPN Clusters.
Select the Type to be Mesh.
Add the Branches that need to communicate with each other.
(Optional) Add one or more Hubs if you also want a hub in the mesh.
Click OK.
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STEP 8 | Commit and Commit to Panorama. If your firewalls have static IP addresses, you are done. If
your branch or hub firewalls in a VPN mesh have DHCP or PPPoE interfaces, you must use
DDNS, so continue this procedure as follows.
STEP 9 | Select Network > Interfaces > Ethernet and in the Template field, select Template-stack for a
particular branch.
STEP 10 | Select the interface whose IP address indicates Dynamic-DHCP Client or PPPOE, click
Override on the bottom of the screen, and click OK to close.
STEP 11 | Verify on Panorama that the DDNS settings were configured.
1. Select Network > Interfaces > Ethernet and select the same interface again.
2. Select Advanced > DDNS.
3. See that the DDNS settings were automatically configured with a Hostname based on the interface
name, and the Vendor set to Palo Alto Networks DDNS. For example, on the Ethernet1/2
interface, the resulting Hostname is 0102.
4. Click OK.
STEP 12 | If the VPN cluster includes any hubs that have a DHCP or PPPoE interface, repeat Steps 9
through 11, but in the Template field, select Template-stack for a particular hub.
Even if your hub is not in a full mesh cluster, but is in a hub-spoke cluster, if the hub uses
DHCP or PPPOE to get its IP address for an SD-WAN interface, you must perform the
Override steps to enable DDNS.
STEP 13 | Commit to Panorama and Push to Devices.
STEP 14 | Verify on the branch firewall that the branch is configured with DDNS.
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1. Log into the branch firewall.
2. Select Network > Interfaces > Ethernet and for the Ethernet interface that you configured, scroll
over the
DDNS Info icon in the Features column to see the Vendor, Hostname, IP address, and
other DDNS information.
STEP 15 | On another branch in the cluster, view that the Peer Address of the interface is a system-
generated FQDN for the DDNS registration.
1. Log onto another branch and select Network > Network Profiles > IKE Gateways.
2. See that the Peer Address is a secure name, not easily referenced and showing no company
information; for example
0101.8ced8460fcc5177cd3665ce41b6345323a15a612b8e52ec1d9ec057a582cb4.t13855f6c9a92d6[...]e18a0d9
STEP 16 | View FQDNs of branches and hubs and update DDNS information.
1. Access the CLI.
2. View FQDNs (generated by DDNS) for other branches and hubs: show dns-proxy fqdn all
3. Update the DDNS addresses: request system fqdn refresh
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Create a Static Route for SD-WAN
In addition to (or as an alternative to) BGP routing, you can create static routes to route your SD-WAN
traffic.
You can configure static routes either using Panorama™ or directly on the firewall hub or branch. If you are
going to use Panorama, you should be familiar with the process to Configure a Template or Template Stack
Variable. You will create a variable to use as the destination in your static route, as shown in the following
procedure. You will push a static route (that goes to the hub) to the branch. You will push a static route (that
goes to the branch) to the hub.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Configure a Template or Template Stack Variable and enter the variable Name in
the following format: $peerhostname_clustername.customname. For example,
$branchsanjose_clusterca.10 or $DIA_cluster2.location3. After the dollar sign ($), the elements
in the variable are:
• peerhostname—Hostname of the destination hub or branch to which the static route goes. For a
static route to the internet, the peerhostname must be DIA. An alternative to the peer’s hostname is
to use the peer’s serial number. If the peer is part of an HA pair, you can use the hostname or serial
number of either one of the two HA firewalls.
• clustername—Name of the VPN cluster to which the destination hub or branch belongs.
• customname—Text string of your choice; you cannot use a period (.) in the customname.
You can have more than one static route going to the same peer, which means the variables will
have the same peerhostname and clustername; you differentiate the variables by using a different
customname.
STEP 3 | Select the variable Type to be IP Netmask and enter the destination IP address with a slash
and netmask length, such as 192.168.2.1/24.
STEP 4 | Click OK to save the variable.
STEP 5 | Select Network > Virtual Routers and select a virtual router.
STEP 6 | Select Static Routes > IPv4 and Add a Name for the static route.
STEP 7 | For Destination, select the variable you created.
STEP 8 | For Interface, select from the dropdown list, which includes only interfaces from the template;
for example, Ethernet1/1, Tunnel.x, or sdwan.xx.
STEP 9 | For Next Hop, select IP Address and enter the IP address of the next hop for the static route
(the hub or branch to which the static route goes).
STEP 10 | Click OK.
STEP 11 | Commit and Commit and Push your changes.
Auto VPN configuration replaces the sdwan keyword in the Interface field of the static route with the
egress virtual SD-WAN interface that it determines based on the Destination variable. Thus, the static
route in the routing table indicates that traffic going to the peer host in the identified VPN cluster will
egress the virtual SD-WAN interface to reach the specified next hop.
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STEP 12 | Configure a static route for the return traffic.
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Monitoring and Reporting
Monitor and generate reports of the application and link health status in your VPN clusters
to identify and resolve issues. In order for the Panorama™ management server to display SDWAN application and link health information, you must enable the SD-WAN firewalls to push
device monitoring data to Panorama and configure log forwarding to Panorama when you
Add Your SD-WAN Firewalls as Managed Devices. If you have not configured your SD-WAN
firewalls to forward logs to Panorama, the SD-WAN Monitoring displays no application or link
health information.
In order for Panorama to gather SD-WAN monitoring data, you must push the
SD-WAN configuration from Panorama to your SD-WAN firewalls. If no SDWAN monitoring data is displayed, verify that you successfully pushed the SDWAN configuration.
> Monitor SD-WAN Tasks
> Monitor SD-WAN Application and Link Performance
> Generate an SD-WAN Report
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Monitor SD-WAN Tasks
Monitor commits, pushes, and other SD-WAN tasks executed from the Panorama™ management server to
gain insight and detailed information regarding the specific task.
If a task succeeds with warnings or fails, you can view detailed warnings and description to better
understand how to resolve the misconfiguration. Additionally, you can view the last push state details to
review detailed information as to what caused the task warnings or errors.
STEP 1 | Log in to the Panorama web interface.
STEP 2 | After editing the SD-WAN configuration, Commit your changes to view the job status.
The job status window displays the operation performed, the result, and any details and warnings related
to the job status.
STEP 3 | View the last push details for jobs that succeed with warnings or failed.
1. Click Tasks (
) at the bottom of the web interface to open the Task Manager.
2. Click the job Type for the SD-WAN task.
3. Click the job Status to view the last push state details for the task.
4. Review the last push state details to identify and resolve the configuration issues.
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Monitor SD-WAN Application and Link
Performance
Monitor the application and link performance in your VPN clusters to troubleshoot issues by viewing
summary information across all VPN clusters and then successively drilling down to isolate the issues
to affected sites, applications, and links. Visibility on SD-WAN traffic is shown on the SD-WAN firewall
receiving the traffic. For example, for traffic from the hub firewall to the branch firewall, the SD-WAN
monitoring data is reflected on the branch firewall. The landing dashboard displays:
• App Performance
• Impacted—One or more applications in the VPN cluster for which none of the paths have jitter,
latency, or packet loss performance that meet the specified thresholds in the Path Quality Profile in
the list of paths from which the firewall can choose.
• OK—Number of VPN clusters, hubs, and branches that are experiencing no jitter, latency, or packet
loss performance issues.
• Link Performance
• Error—One or more sites in the VPN cluster have connectivity issues such as when a tunnel or a
virtual interface (VIF) is down.
• Warning—Number of VPN clusters, hubs, and branches that have links with jitter, latency, or packet
loss performance measurements that exceed the moving seven-day average value of the metric.
• OK—Number of VPN clusters, hubs, and branches that are experiencing no jitter, latency, or packet
loss performance issues.
If a hub or branch firewall have an SD-WAN policy rule configured with Forward Error Correction, an
Error Correction Initiated message is displayed to notify you that the hub or branch firewall
detected and corrected errors in transmitted data for an application.
SD-WAN hubs display Error Correction Initiated only if traffic originated from the
SD-WAN hub to the SD-WAN branch and matched an SD-WAN policy rule with an error
correction profile attached.
From the landing dashboard, narrow the view to impacted applications or links that have the Error or
Warning status. Then select an affected site to view site-level details. From the site, view application-level
or link-level details.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Panorama > SD-WAN > Monitoring to view at-a-glance health status summaries of your
VPN clusters, hubs, and branches.
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STEP 3 | Click an App Performance or Link Performance summary that indicates Impacted, Error, or
Warning counts to view a detailed list of sites and their status based on latency, jitter, and
packet loss.
STEP 4 | Click a site that displays Warning or Error to see one VPN cluster. The site data display App
Performance and Link Performance, including the impacted applications. Additionally, use the
Sites filter to view VPN clusters based on link notifications, latency deviations, jitter deviations,
packet loss deviations, or impacted applications.
For SaaS applications over a Direct Internet Access (DIA) link, the SaaS Monitoring column indicates
whether the app is created in a SaaS Quality profile and associated with one or more SD-WAN policy
rules.
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• Disabled—The app is not a SaaS application configured in a SaaS Quality profile.
• Enabled—The app is a SaaS application configured in a SaaS Quality profile and is associated with a
single SD-WAN policy.
• Multiple—The app is a SaaS application configured in a SaaS Quality profile and is associated with a
multiple SD-WAN policies.
If you associated an error correction profile with an SD-WAN policy rule for an application, the Error
Correction Applied columns displays if and what type of error correction was applied. Additionally, you
can view the Error Corrected Sessions/Impacted Sessions/Total Sessions to understand how many
sessions were error corrected by the branch or hub firewall out of the total number of sessions for the
specified timeframe.
Click PDF/CSV to export the detailed health information for the applications and links in the Site in PDF
or CSV format
STEP 5 | Click the branch or hub that has an application that needs attention.
STEP 6 | Click an impacted application to view application-level or link-level details.
For example, view the link characteristics for an application to understand the latency, jitter and packet
loss for the application over the specified link. Additionally, you can view when error correction was
applied for the link.
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Generate an SD-WAN Report
Configure and generate an SD-WAN report detailing the top applications or links with the highest
frequency of path quality degradation. The order application or links appear in a report is based on the
amount of data impacted; the more data is impacted, the higher the application or link appears in the report.
SD-WAN reports are generated as needed and cannot be scheduled. Use the SD-WAN reports to verify
the correct application or link throughput, or ensure that application or link impact is not noticed by users.
For example, if your ISP guaranteed a certain amount of throughput on a link, generate a Link Performance
report for that link to verify that the guaranteed bandwidth is honored.
From the Panorama™ management server, you can only generate reports for applications or links across all
SD-WAN enabled firewalls. To generate a report for applications or links processed by an individual firewall,
you must create and generate the report locally on the firewall.
STEP 1 | Log in to the Panorama web interface.
STEP 2 | Select Panorama > SD-WAN > Reports and Add a new report.
STEP 3 | Configure the SD-WAN report parameters.
1. Enter a descriptive Name for the report.
2. Choose the Report Type to generate:
• Select App Performance to generate a report detailing only application health performance.
• Select Link Performance to generate a report detailing only the link health performance.
3. Select the VPN Cluster for which to generate the report. By default, all is selected.
4. Select a Site within the selected VPN cluster for which to generate the report. By default, all is
selected.
If you selected all Clusters then this field is grayed out and a Site cannot be selected.
5. (App Performance only) Select the Application for which to generate the report.
6.
7.
8.
9.
If you selected all Clusters and Sites then this field is grayed out and an individual application cannot
be selected.
(Link Performance only) Select the Link Tag for which to generate the report. Selecting a link tag
generates a report for all links in grouped using the tag in the cluster or site. By default, all is selected.
(Link Performance only) Select the Link Type for which to generate the report. Selecting a link type
generates a report for all links of the specified type in the cluster or site. By default, all is selected.
Select the Top N applications or links to include in the report. This setting determines the number of
applications or links experiencing health degradation to include in the report. By default, the report
includes the top 5 applications or links experiencing health degradation.
Specify the Time Period within which to generate the report. By default, None is selected and
queries the entire health status history of the applications or links.
STEP 4 | Click Run Now to generate the report.
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STEP 5 | View the generated report and Export XML to export the report in XML format to your local
device. When ready, click Close.
STEP 6 | In the Reports pop-up, click OK to save your configured report.
STEP 7 | Commit > Commit to Panorama and Commit your changes.
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Troubleshooting
Use the Panorama™ management server Command Line Interface (CLI) to view SD-WAN
information and perform operations.
>
>
>
>
>
>
Use CLI Commands for SD-WAN Tasks
Troubleshoot App Performance
Troubleshoot Link Performance
Upgrade your SD-WAN Firewalls
Upgrade the SD-WAN Plugin
Uninstall the SD-WAN Plugin
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Use CLI Commands for SD-WAN Tasks
Use the following CLI commands to view and clear SD-WAN information and view SD-WAN global
counters. You can also view VPN tunnel information, BGP information, and SD-WAN interface information.
If you want to ...
Use ...
View or Clear SD-WAN Information
• View path names and IDs for an SD-WAN
interface, their state, local and peer IP
addresses, and tunnel interface number.
> show sdwan connection all | <sdwaninterface>
• View the number and percentage of sessions
distributed to each tunnel member of a virtual
SD-WAN interface.
> show sdwan session distribution
policy-name <sdwan-policy-name>
• View the names of SD-WAN policy rules that
send traffic to the specified virtual SD-WAN
interface, along with the traffic distribution
method, configured latency, jitter, and packet
loss thresholds, link tags identified for the rule,
and member tunnel interfaces.
• View SD-WAN events such as path selection
and path quality measurements.
> show sdwan rule vif sdwan.x
> show sdwan event
For PAN-0S 10.0.0 and 10.0.1,
when you make an SD-WAN
configuration change (such as
a Path Quality profile change)
that results in a different SDWAN path being selected, the
traffic log does not count or log
the path change.
• Clear SD-WAN events.
> clear sdwan event
• View latency, jitter, and packet loss on a virtual
SD-WAN interface (specify interface number or
name).
Latency, jitter, and packet loss measurements
are taken and averaged over three timeframes.
Each timeframe has a health version, which
increments when a health parameter value (that
exceeds the threshold) changes. In addition to
the real time measurement, there is a current
> show sdwan path-monitor stats vif
<sdwan.x>
> show sdwan path-monitor stats vif
<sdwan-interface-name>
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If you want to ...
Use ...
use measurement, which displays the value of
the parameter the last time the real-time value
change exceeded the threshold.
• View the name of the SD-WAN policy rule that
the specified session matches, the source and
destination tunnel interfaces, the configured
latency, jitter, and packet loss percentage for
the rule, and the traffic distribution method.
> show sdwan session path-select
session-id <session-id>
For PAN-0S 10.0.0 and 10.0.1,
when you make an SD-WAN
configuration change (such as
a Path Quality profile change)
that results in a different SDWAN path being selected, the
traffic log does not count or log
the path change.
• View monitoring mode for the virtual SDWAN link (Aggressive or Relaxed) and update
intervals.
> show sdwan path-monitor parameter
path-name <sdwan-path-name>
• View monitoring mode for the virtual SDWAN interface (Aggressive or Relaxed), update
intervals, and probe statistics.
> show sdwan path-monitor parameter
vif <sdwan.x>
View Global Counters to Troubleshoot SD-WAN
• On a branch, verify that the number of SDWAN probe Request packets transmitted
equals the number of probe Reply packets
received.
On a branch firewall, most SD-WAN tunnels
are the initiator, which means the tunnel will
have SD-WAN path-monitor probing enabled.
• On a hub, verify that the number of SD-WAN
probe Request packets received equals the
number of probe Reply packets transmitted.
On a hub firewall, most SD-WAN tunnels are
the responder, which means the tunnel will
have SD-WAN path-monitor probing disabled.
> show counter global filter delta
yes
flow_sdwan_prob_req_tx
flow_sdwan_prob_reply_rx
> show counter global filter delta
yes
flow_sdwan_prob_req_rx
flow_sdwan_prob_reply_tx
View VPN Tunnel Information
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If you want to ...
Use ...
• View all tunnels created on firewall.
> show vpn flow
• View details of individual tunnels identified by
name.
> show vpn flow name <name>
• View details of individual tunnels identified by
ID.
> show vpn flow tunnel-id <tunnel-id>
• View Internet Key Exchange (IKE) Phase 1 and
Phase 2 details for all tunnels.
> show vpn ike-sa
• View IKEv2 security associations (SAs) and
IKEv2 IPSec child SAs of a specific gateway.
> show vpn ike-sa gateway <gateway>
• View tunnel details.
> show vpn tunnel
View BGP Information
• View BGP summary for a virtual router.
> show routing protocol bgp summary
virtual-router <virtual-router>
• View BGP peer summary.
> show routing protocol bgp peer
peer-name <peer-name> virtual-router
<virtual-router>
• View summary of local routing information
base (RIB).
> show routing protocol bgp loc-rib
View SD-WAN Interface Information among RIB and FIB
• View new SD-WAN egress interface.
> show routing route
• View SD-WAN interfaces in forwarding
information base (FIB).
> show routing fib
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Troubleshoot App Performance
Understanding what is causing degraded performance for your apps and services is integral to ensuring the
user experience is not impacted. Understanding why your VPN clusters are impacted and app traffic failed
over to different links helps in fine tuning your SD-WAN configuration.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Panorama > SD-WAN > Monitoring and view the Impacted VPN clusters.
STEP 3 | Filter the VPN clusters based on your preferred metric from the Site drop-down and select
time frame. In this example, we are viewing All Sites containing impacted VPN clusters in the
last 12 hours.
STEP 4 | In the Sites column, select the impacted hub or branch firewall to view the impacted apps and
the corresponding link performance.
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STEP 5 | In the App Performance section, click an app to view detailed Traffic Characteristic information
about the app traffic such as the internet service(s) and links used:
• Review the pie chart to understand the breakdown of app traffic across the your internet services.
• Review the linegraph to understand how many bytes of data were transferred over each internet
service over time.
• Review the Links Used section to understand which links the app traffic used and to understand how
many of the bytes were impacted out of the total bytes in the selected time frame.
STEP 6 | Investigate which health metric caused the app to swap links.
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The dotted line indicates the seven day average for the health metric.
1. In the Links Used section of the Traffic Characteristics tab, click an ethernet Link to view detailed
Link Characteristics (latency, jitter, and packet loss) over the time frame specified in Step 2 to
investigate what health metric caused the app to swap links.
2. In the Traffic Characteristics tab, select another link to view the Link Characteristics for secondary
app link to better understand what caused the VPN cluster to become impacted.
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STEP 7 | After you have identified why the app traffic is impacted, consider the following to resolve the
issue:
• Consider adding additional links to the Traffic Distribution Profile. By adding additional links for app
traffic to fail over to, you help ensure that the app traffic and user experience are not impacted by
links with degraded health.
• Reconfigure the health thresholds in your Path Quality Profile. It may be that the health thresholds
are too strict, resulting in unnecessary link fail over. For example, if you have an app that can
experience up to 18% packet loss before user experience is impacted, having a 10% packet loss
threshold would result in the app failing over to a different link without a need to.
• Consult your internet service providor (ISP) to determine if there are impacts to your network outside
of your control that they can resolve.
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Troubleshoot Link Performance
Understanding what is causing degraded link performance is integral for ensuring the user experience when
using apps and services is not impacted. Understanding why your VPN clusters have links that are impacted
helps in fine tuning your SD-WAN configuration to ensure that the user experiences when using apps and
services are not affected by links with degraded health.
STEP 1 | Log in to the Panorama Web Interface.
STEP 2 | Select Panorama > SD-WAN > Monitoring and view the Impacted VPN clusters.
STEP 3 | Filter the VPN clusters based on your preferred metric from the Site drop-down and select
time frame. In the Sites column, select the impacted hub or branch firewall to view the
impacted apps and the corresponding link performance.
In this example, we are viewing All Sites containing impacted VPN clusters in the last 24 hours.
STEP 4 | In the Sites column, select the impacted hub or branch firewall to view the impacted apps and
the corresponding link performance.
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STEP 5 | In the App Performance section, click an app to view detailed Traffic Characteristic information
about the app traffic such as the internet service(s) and links used:
• Review the pie chart to understand the breakdown of app traffic across the your internet services.
• Review the linegraph to understand how many bytes of data were transferred over each internet
service over time.
• Review the Links Used section to understand which links the app traffic used and to understand how
many of the bytes were impacted out of the total bytes in the selected time frame.
STEP 6 | Investigate which health metric caused the app to swap links.
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The dotted line indicates the threshold you configure when you Create a Path Quality Profile.
1. In the Links Used section of the Traffic Characteristics tab, click an ethernet Link to view detailed
Link Characteristics (latency, jitter, and packet loss) over the time frame specified in Step 2 to
investigate what health metric caused the app to swap links. In this example, we are viewing ethernet
1/1 and can see that the percentage of packets lost regularly exceeded the configured threshold in
the Path Quality Profile for the app and can conclude that this is the reason the app traffic failed over
to the next best link.
2. In the Traffic Characteristics tab, select another link to view the Link Characteristics. In this
example, we are viewing ethernet 1/4 and can see that after the app traffic failed over, ethernet 1/4
experienced jitter for the app that exceeded the configured threshold. This forced the app traffic to
fail over back to ethernet 1/1.
Since both links had health metrics that were exceeded, the app traffic had no healthy link to fail over
to resulting in the VPN cluster becoming impacted.
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STEP 7 | After you have identified why the app traffic is impacted, consider the following to resolve the
issue:
• Consider adding additional links to the Traffic Distribution Profile. By adding additional links for app
traffic to fail over to, you help ensure that the app traffic and user experience are not impacted by
links with degraded health.
• Reconfigure the health thresholds in your Path Quality Profile. It may be that the health thresholds
are too strict, resulting in unnecessary link fail over. For example, if you have an app that can
experience up to 18% packet loss before user experience is impacted, having a 10% packet loss
threshold would result in the app failing over to a different link without a need to.
• Consult your internet service providor (ISP) to determine if there are impacts to your network outside
of your control that they can resolve.
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Upgrade your SD-WAN Firewalls
Review the Panorama Plugin for SD-WAN 2.1 Release Notes and then use the following procedure to
upgrade your Panorama and managed SD-WAN firewalls.
STEP 1 | Install Content and Software Updates for Panorama.
STEP 2 | Upgrade your managed Log Collectors.
• Upgrade Log Collectors when Panorama is Internet-Connected.
• Upgrade Log Collectors when Panorama is not Internet-Connected.
STEP 3 | Upgrade your SD-WAN hub firewalls.
You must upgrade your hub firewalls from PAN-OS 10.0.0 to PAN-OS 10.0.1 or later
release before you upgrade your branch firewalls. Upgrading branch firewalls before hub
firewalls may result in incorrect monitoring data (Panorama > SD-WAN > Monitoring) and
for SD-WAN links to erroneously display as down.
• Upgrade Firewalls when Panorama is Internet-Connected.
• Upgrade Firewalls when Panorama is not Internet-Connected.
STEP 4 | Upgrade your SD-WAN branch firewalls.
• Upgrade Firewalls when Panorama is Internet-Connected.
• Upgrade Firewalls when Panorama is not Internet-Connected.
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Upgrade the SD-WAN Plugin
Upgrade the SD-WAN plugin version installed on your Panorama™ management server and firewalls
leveraging SD-WAN.
STEP 1 | Log in to the Panorama web interface.
STEP 2 | Upgrade the SD-WAN plugin version on Panorama.
For Panorama in a high availability (HA) configuration, repeat this step on the Panorama HA peer.
1. Select Panorama > Plugins and Check Now for the latest sd_wan plugin version.
2. Download and Install the latest version of the SD-WAN plugin.
STEP 3 | Upgrade the SD-WAN plugin version on your hub and branch firewalls.
1. Select Panorama > Device Deployment > Plugins and Check Now for the latest sd_wan plugin
version.
2. Download the latest version of the SD-WAN plugin.
3. Install the SD-WAN plugin and select your hub and branch firewalls from the list of Devices.
4. Click OK to install the new SD-WAN plugin version on the selected hub and branch firewalls.
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Uninstall the SD-WAN Plugin
To uninstall the SD-WAN plugin from the Panorama management server, you must remove your SD-WAN
plugin configuration from Panorama before you can successfully uninstall the SD-WAN plugin.
STEP 1 | Log in to the Panorama web interface.
STEP 2 | Remove any security policy rules that allow BGP to run between your SD-WAN hubs and
branches.
1. Select Panorama > SD-WAN > Devices > BGP Policy and Remove the security policy rules.
2. Click OK to save your configuration changes.
STEP 3 | Select Panorama > Plugins and select Remove Config for the SD-WAN plugin.
STEP 4 | Select Commit and Commit and Push your configuration changes to your managed firewalls.
STEP 5 | Uninstall the SD-WAN plugin.
Click OK when prompted to continue uninstalling the SD-WAN plugin.
124 SD-WAN ADMINISTRATOR’S GUIDE | Troubleshooting