Network Evolution –
What is happening to
our metro networks and why?
Sten Nordell
CTO
Metro Business Group
1 | © 2015 Infinera
The metro today


1G to >100G
•
100G Accelerates
Dynamic architectures
•
L0 to L3
•
Fast moving towards SDN
architectures
•
Fronthaul/Backhaul/FTTx
•
Cloud based services
Cloud
Service &
Caching
Provider(s)
Cloud
Service &
Caching
Provider(s)
Cost optimized solutions
•
Purpose build hardware
•
White label boxes
•
Management solutions
Scalability
•

Core/LH
•
Platform and commercial aspects
Multi Layer Management
•
Ability to manage L0 to L3
2 | © 2015 Infinera
Cloud
Service &
Caching
Provider(s)
Metro

Increased bandwidth
Access/
CPE

Cloud
Service &
Caching
Provider(s)
Cloud Networking
Dynamic/automatic/virtualized hardware
and networking
• NaaS / IaaS / CaaS / SaaS / PaaS / NFaaS
• Programmability
Hierarchy of data centers
•
•
•
•
Mega data centers
Enterprise-oriented data centers
Distributed data centers
Communication data centers
• Cloud-RAN data centers
• Traditional local exchange
becomes a data center
3 | © 2015 Infinera
Data Center
Interconnectivity
Cloud
Service
Provider(s)
Cloud Service
Provider to
Cloud Customer
Ethernet
Cloud Carrier(s)
Ethernet
Cloud Carrier(s)
Cloud
Consumers
Cloud
Service
Provider(s)
Growth in Capacity, Users and Connections
 Annual IP traffic is expected to reach a record
two zettabytes by 2019, growing at a compound
annual rate of 23%.
 The number of Internet users will jump from 39%
of the global population in 2014, to 51% in 2019.
 There are expected to be 24 billion connected devices
by 2019, or just over three connected devices per user.
 IP video will make up 80% of all global IP traffic
by 2019, an increase from 67% in 2014.
 Cellular connections will make up more than 14%
of IP traffic in 2019, while WiFi connections will
account for 53% globally.
4 | © 2015 Infinera
Metro-only traffic
(traffic that traverses only
the metro and bypasses
long-haul traffic links)
surpasses long-haul
traffic in 2014, and will
account for 62% of total
IP traffic by 2019.
Metro-only traffic
will grow nearly twice as
fast as long-haul traffic
from 2014 to 2019.
Cisco Visual Networking Index 2015
Optical Trends
 Optical software revolution – SDN/NFV
• Programmable optical networking
SDN/NFV
 Faster adoption of 100G than expected driven by
100G
long haul and DCI
 Expected rapid adoption to 200G/400G and beyond
• More coherent networks
• Broader range of modulation formats
200/400G
C-RAN
 New optical networks are being built
• Mobile (Fronthaul/Cloud-RAN)
• DCI networks (cloud operators)
 Changing dynamic in the optical industry
• Web 2.0, mobile…
5 | © 2015 Infinera
DCI
Web 2.0
Why SDN/NFV?
Operating Expenses
(Persons per Server)
6 | © 2015 Infinera
Time to Revenue
1 per
10,000
seconds
TELCO:
TELCO:
1 per 100
Months
Operational Complexity
(Number of Configurations)
10
configs
TELCO:
Thousands
configs
Changing Service Providers’ Opportunities
 Business models are changing
 Consolidations in the industry
 Pressure on telecom
business model
• Different business options
need to be evaluated
Source: Telco 2.0
7 | © 2015 Infinera
More traffic stays in the metro
Content closer to the
users – distributed metro
with distributed cloud
Centralized
Source: Bell Labs Report
8 | © 2015 Infinera
 More local services available
 More bandwidth in the metro
Distributed
Cable – NGN Remote RF SDN / NFV Controlled Network
 RF modulation
moving out –
becomes
Fronthaul like
 More 10G Ethernet
in the aggregation
network
 DOCSIS processing
 Video content
is moving out
moving out
 Shorter cable
 Virtualization of
runs/fiber closer
to the customer
control and
communication
services
 Fewer users per
segment/more
bandwidth per user
Source: Gainspeed
9 | © 2015 Infinera
Fixed – What if we move the BNG functions to the OLT?
 Move data plane of subscriber
management to a distributed
point in the network
 Core and metro aggregation
networks becomes closer
 Multiple connections of
higher bitrate
Source: KJP
 Flattened aggregation network
 Meshier metro aggregation
network
 Central office consolidation
 Virtualizing the services
10 | © 2015 Infinera
Central Office goes Data Center
vCPE
 CPE replaced with a simple switch
 Functionality that existed on CPE
virtualized and moved into the
Central Office
vOLT
 Everything but the MCs can be virtualized
 And moved to NFVI running over standard:



Fabric Switches
Storage
Servers
Source: AT&T
11 | © 2015 Infinera
Mobile – 5G Technology Requirements
Core
Network
LTE –
min 10ms
4ms
1-2ms
5-10ms
if in the same country
as the customer
 1-10 Gbps connections to end points in
5G service
sub-1ms
Content
> 0.5ms
Source: GSMA
4ms
Internet
> 0.5ms
the field (i.e. not theoretical maximum)
 1 millisecond end-to-end round trip
delay (latency)
 1000x bandwidth per unit area
 90% reduction in network energy usage
12 | © 2015 Infinera
Macro to Micro Data Centers for MobileCloud
DCI
Longhaul
DCI networking
Fronthaul
DCI networking
(Backhaul)
Ref: mcn
Source: MCN
13 | © 2015 Infinera
NFaaS (Network Function as a Service)
 Simplified architecture
 Specialized middle boxes are replaced with
common hardware i.e. uniform infrastructure
 Reduced CapEx


Specialized components are replaced by
common hardware and open source software
Decreased OpEx

Through automation
 Flexibility

Through infrastructure virtualization and the
ability to manage functions at the service level
Source:
ONOS
14 | © 2015 Infinera
Metro Network Evolution
NPO 3.0
15 | © 2015 Infinera
Service Provider Networks are very alike
Fiber all the way to the
home, building, tower or
proprietary stuff in between
Virtualize as much stuff as possible via
NFV (Routers, Switches, CPE), virtualize
control plane via SDN
CPE
Access
Carrier Ethernet
Over Fiber
CPE
Metro WDM
Carrier Ethernet
Over Fiber
CPE
Ring, hub and spoke, or mesh topologies
Access specific technology
 Wireless Carrier (CPRI, or Ethernet
Over Copper/Microwave)
 MSO (HFC)
 Telco (Copper/Microwave)
16 | © 2015 Infinera
Core Network
(IP/MPLS)
Metro Network Evolution
Metro networks are changing in the way they need/will need to be built










Converged cable, broadband and mobile architecture
Higher bandwidth in the access means more 10/100G in the metro
More traffic stays in the metro
More switching/flexibility/aggregation (L0/L1/L2/L3)
Diverse/new application sets
SDN with separation of data-plane and control-plane
NFV for services (virtualization)
More open source/collaboration in the Industry
More/new business models developing around software
Packets (IP/Ethernet) is dominating
17 | © 2015 Infinera
Introduce
the NPO 3.0
network
architecture
Objectives of NPO 3.0

Centralize
• Continue to decouple software capabilities from the network elements
• Ease migration to new hardware architectures
 Virtualize
• Continue to expand upon our SDN strategy
• Simplify standardization and addition of new applications
 Automate
• Continue to elevate our network awareness from L0-L3
• Consolidation of network control into single unified control plane
 Advance
• Continue our move to next generation Optical architectures
• Move beyond 100G and to next generation network architectures
18 | © 2015 Infinera
Key components of NPO 3.0
19 | © 2015 Infinera
Thank you
20 | © 2015 Infinera