AT&T Multi-protocol Label Switching
Private Network Transport Service
(MPLS PNT)
National Communications
Tel: 866-624-2008
Email:
Sales@nationalcommunicationsgroup.com
AT&T Proprietary Information
Agenda
• Your Business Requirements
• What is MPLS?
• MPLS PNT Offer – IP VPN
• The Value of MPLS PNT
• Wrap Up and Q&A
AT&T Proprietary Information
Your Business Requirements
Consistent
customer support
Easy to use,
integrated services
Global solutions that
grow with the business
Consistent and
predictable services
Superior customer
experience
Migration path
to new technologies
Value for return
on communications
investment
On-time
implementation
AT&T Designs Networking
Solutions for Your
Business Needs
AT&T Proprietary Information
AT&T’s IP Network: Engineered to Your
Requirements
AT&T is Investing to Operate the World’s Best IP Network
HQ
End User
Single AT&T Global
Network
HQ
Corporate
Sites
Business
Partners
End-to-End
Quality of
Service
Business
Partners
Corporate
Sites
Varying
Degrees of
Management
Remote Worker
End User
AT&Ts Network Evolution: Optimizing Application Performance with MPLS
• Supports Quality of Service/Classes of services for different applications
–Traffic Prioritization
• Scalable Virtual Private Networks (VPN)
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MPLS in the AT&T Global Network Backbone
RAS
NCP
NCP
Private &
I1.1 Servers
Edge VPNs
Internet
RAS
CSR
X-over
Services
Network
SNA
CSR
CSR
Frame
VPNs
ATM & Frame
Infrastructure
CSR
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Internet
CSR
CSR
PE
PE
MPLS VPNs
PE
P
Shared MPLS E
Network
PE
Optical Core Network
Shared
Servers
How MPLS forwards Packets
Data Packet Two Labels
The inner label (secondlevel) identifies the
destination VPN and
customer address
The outer label (firstlevel) is the forwarding
label for transport
within the core
Egress MPLS Edge
Router removes labels
from each packet
Ingress MPLS Edge
Router adds two labels
to each packet
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Convergence - Wouldn’t this be Nice?
MPLS Enabled IP Network – All Applications on ONE IP Network
Data
Applications
Voice
Applications
MPLS IP
Backbone
Internet
Applications
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MIS – Managed Internet Service
The Foundation for MPLS PNT
Provides customers with managed, dedicated connectivity to the public Internet, complemented with a number of
value added services. AT&T carries customers’ traffic to anywhere on the Internet
LAN
Customer
Premises
Customer
router
AT&T
POP
Access
router
Description
Dedicated port into AT&T’s OC48/OC192 Common Backbone - no single point of
failure in the core backbone:
• Designed with multiple rings for alternative routes between nodes
• Routers deployed in a redundant fashion (power, processors)
• Access speeds range 56kbps – 2.5 Gbps (OC48)
• Access options: PL, FR, ATM, T1SINA, Ethernet
• MIS with CPE option includes: equipment lease, installation, monitoring, and
maintenance; also offer redundant configuration (“Cold Standby” CPE)
AT&T CBB
(IP Backbone)
Public Internet
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What is AT&T MPLS PNT?
 PNT is a new type of VPN (Hybrid of the traditional models)
– Provisioned on the AT&T IP Network
– Uses MPLS (Multiprotocol Label Switching) to provide security
 Does not need additional VPN gear at the customer’s site for
security
• A private networking environment in a shared infrastructure
(IP Network) utilizing Multiprotocol Label Switching (MPLS)
technology based on IETF Standard (RFC 2547)
Simply stated – A network-based IP VPN
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Applications of MPLS PNT
 VPN
– MIS PNT is a network based VPN, which offers all of the benefits of
traditional IP based VPNs without the need for additional VPN gear
and management
 Point to Point Connection
– MIS PNT provides a dedicated, replicable, and secure path through
the AT&T IP Backbone
 Merge Networks (FR, ATM, IP)
– MIS PNT gives customers the ability to have the security of FR on an
IP network. Therefore, they can have Internet access and security
and CoS all on one network
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Features of MPLS PNT
 Access Speeds
– Packet over SONET (POS) interface access for T1, T3, OC3, OC12 and OC48 (Fractional T1
is not available at this time – coming 1Q04)
–
(NxT1 is not available at this time – however MARO ALB is available)
 Addressing
– Allows both private (example10.x.x) and public addressing
 Routing protocol
– Supports both Static and BGP (depending on PNT model)
 Billing options
– Flat rate, Burstable, Hi-Cap Flex, and aggregate
 Internet Access
– MPLS PNT does not provide internet access (on the same port – Coming soon!)
– Internet access can be provided by purchasing Internet ports and will incur additional charges
 Management
– Supports both managed and unmanaged options
 Footprint
– Domestic US only
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Model Examples of MPLS PNT
Label Transport
Downstream
ISP’s MPLS
VPN
IP Transport
Customer
Region 1
MPLS VPN
MPLS VPN
CE
CE
CE
CE
PE
(AR)
P
(BR)
Downstream
PE
ISP’s MPLS
(AR)
VPN
CE router will send AT&T's PE (AR) router labels
identifying the VPN. The AT&T PE router adds
labels identifying the path through the network
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PE
(AR)
P
(BR)
PE
(AR)
Customer
Region 2
CE router will act just like any other IP
router. The CE router will send IP packets
to AT&T's PE router (AR). The AT&T PE
router assigns VPN labels to the packets
The Value of Both Models
 MPLS Label Transport
(CPE sends a VPN label to AT&T AR)
–
–
–
–
–
CE router must be LDP (MPLS Label
Distributed Protocol) enabled. It will send
IP traffic to AT&T PE Router and add
additional labels identifying the VPN
AT&T PE router (AR) will assign two more
labels to the customer’s packets
identifying the VPN and path through the
AT&T network
The combination of the customers labels
plus AT&T’s labels creates the labels
needed for MIS PNT
Static routing protocol supported between
customer router and AT&T router at this
time.
Advantage:
» Customer does not need to send
AT&T their external routes
» Customer can run MPLS within their
regional network
» Customer can offer MPLS VPN to
their own customers.
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 MPLS IP Transport
(CPE does not send a VPN label to AT&T AR)
– Customer Edge router (CE) will send IP
traffic to AT&T PE router
– AT&T PE router (AR) will assign two labels
to the customer’s packets.
– One label identifies the VPN and the other
label identifies the path through the AT&T
network
– Static and BGP routing protocol between
customer router and AT&T access router
– Advantage:
 Simplicity. Customer doesn’t have to
understand MPLS but will be provided
a network based VPN
How Label Transport Model Works
•
•
•
•
•
•
IP Backbone has been MPLS enabled
During the Provisioning process, AT&T creates a “VPN ID” for the
customer
The Provider Edge (PE) router (or Access Router) will terminate
Customer Edge (CE) routers (or Customer Routers) MPLS PNT ports
and assign a VPN label to it.
PE router will then add on another label for packet forwarding
purposes. Once the packet gets into the backbone core, the
Provider’s (P) routers (or Backbone Routers) will have no knowledge
of this VPN, where it terminates, or its IP addresses. The P routers will
just forward the labeled packets, following the normal network
routing mechanism.
Once the packet reaches the destination PE router, it will then strip off
the forwarding label.
Based on the VPN label, the destination PE router will know which
port belongs to the VPN. It will then take off the VPN label, and send
the packets to the designated port connected to the CE router.
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Class of Service With MPLS PNT
CBB
Core
CR1
AR1
BR
AR2
• Packet prioritization by reordering
• Bandwidth allocation
• Congestion management
CR=Customer Router
AR=Access Router
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CR2
Service Level Agreements (SLAs)
 SLAs
– 99.99% Availability
– 60 millisecond Network Latency/Delay
– <0.7% Packet Loss
 Provisioning
• T1: 32 Business days
• T3: 42 Business days
• OC3 : 63 Business days
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The Value of MPLS PNT
 Cost Effectiveness
– Significant cost savings – 10%-40% compared to “Traditional VPNs”
– Merges both Internet and private networking needs over one cost effective network
 Layer 3 PPP local access
– Offers end to end Native IP
 Guaranteed Full Port Speeds
– Not a CIR/CDR concept that cannot “guarantee” port speed
 Extensive U.S. Domestic Reach via the AT&T IP Backbone - a Native IP
Network
– Uniform MPLS-enabled IP Network
– Access independent
 Security
– MPLS inherent security on par with Frame Relay
– Additional optional AT&T Security Services
 High Performance Network
– Available with MARO (MIS Access Redundancy Options)
– Tier 1 carrier-class IP network reliability and performance
 Predicatable Performance (QoS)
– Multiple Classes of Service supported to accomodate all types of applications
AT&T Proprietary Information
The Value of MPLS PNT - con’t
 Project Management
– Comprehensive network solution design leveraging AT&T engineering and
operational expertise
– Project and deployment management utilizing global tool set to develop,
document and drive implementations globally
 Simplicity of One Stop Shop with Flexible Billing Options
– One contract, one price schedule, one servicing model deployment /
operation / customer care, one bill
– Billing includes options for flat rate, burstable, hi-cap flex and aggregate
 Scalability
– Network based service can be scaled easily in terms of sites and speeds
– Fully meshed connectivity to all sites with just a single connection into the
VPN
 Simplicity
– No tunnel or PVC provisioning and maintenance required
 Flexibility
– Add or delete sites/routes as needed
 Excellent Customer Support
– 24X7 customer care and network support
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AT&T Accolades
AT&T ranked highest on Gartner’s US NSP Magic Quadrant
with best “Ability to Execute” and “Completeness of Vision”
AT&T IP backbone is the largest US IP backbone in
traffic volume
AT&T IP backbone is the best performing IP backbone
in the industry
A clear leader of managed data networking provider in
large enterprise market in a enterprise survey
Data market leader in performance and presence by
META Group
First and ONLY carrier with both a coast to coast OC-192
AND more than 1.8M sq. ft. of hosting capacity
Handles 2,700 trillion bytes of data on an average business
day, equivalent to the printed contents of the Library of
Congress, every 11 minutes
Operates with 99.999 percent network reliability for ATM and
Frame Relay,as well as 99.99 percent reliability for IP services
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AT&T: The World’s Networking Company
Thank You
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Back Up Slides
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MIS Access Redundancy Options (MARO)
•
•
•
•
•
Purchase multiple connections to the AT&T IP backbone to help protect against potential failure in
any single component of the MIS circuit. e.g., customer’s access router, IP backbone router, circuit
link, etc.
AT&T will coordinate with the customer to implement their desired traffic flow over the two links
and manage the necessary BGP4 routing
Fast rerouting within the AT&T network upon failure
AT&T will implement failover mechanisms to protect against failures of the MIS Managed Routers
on customer premises
AT&T can provide network professional services to assist in traffic flow design, load sharing, BGP4
design, etc. for MIS customers with or without Managed routers
Backbone Node Redundancy
Backbone
AR
Backbone
AR
Access Router Redundancy
Backbone
AR
Backbone
AR
AR
POP
POP
POP
Customer site
LC
LC
LC
CR
IOC
IOC
IOC
CR
Automatic Load Balancing
CR
Customer site
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CR
CR
Customer site