1 | © 2015 Infinera

Open SDN in Metro P-OTS NetworksSten NordellCTOMetro Business Group2015-10-15

2 | © 2015 Infinera

Infinite Pool of Intelligent Bandwidth

The New Network for a Software-driven World

Old Model

API – SDN Control

New Simplified Model

ServicesNetwork Functions Virtualized into Cloud

Transport FunctionsScale, Convergence, Software-Controlled

Intelligent Transport

FirewallSBC

B-RASMPLS PE

L2/3 Packet

Layer 1 OTN

Layer 0 WDM

LayeredNetwork

Dynamic Intelligent BW

Network Efficiency

Intelligent Automation

App-Driven Performance

3 | © 2015 Infinera

The evolution of Native Packet Optical in the Metro

Native Packet Optical 1.0

Layer 1

Layer 2

Native Packet Optical 2.0

OTNEthernet

MPLS-TP CE2.0

Native Packet Optical 3.0

4 | © 2015 Infinera

Metro P-OTS SDN 2.0 key characteristics

Open SDN architecture• Open Source Software• Open platform with added value• Feature velocity driven• OpenFlow based

Open APIs providing interoperability between transport layers

Built for Metro P-OTS networks• Each switch instance controlled individually • Node level for infrastructure

Scalable and distributed SDN controller architecture

SDN

5 | © 2015 Infinera

What applications are we focusing on?

Service oriented transport SDN apps

• Bandwidth• On demand• Flexible • Calendaring• Instant

Service chaining

Multi-layer coordination

L0 to L3 applications and services

Open APIs for network programmability

Bandwidth on demand

Service chaining

Multi-layer coordination

6 | © 2015 Infinera

Metro P-OTS SDN 2.0 Overview

OpenFlow 1.3 (+Extensions)

REST APIs

MEFConnectivity

Host DiscoverySimple

DHCP Server Policers

vRouter BandwidthCalendaring

NetworkTap Statistics

Controller

TNM SDN Web app

EMXPEMXP

EMXP

EMXP EMXP

Har

dwar

eCo

ntro

l Lay

erU

I

7 | © 2015 Infinera

Application examples

8 | © 2015 Infinera

What: Adjust services’ bandwidth

levels freely and live

Why: Allows the operator to

dynamically adjust bandwidth based on customers requests

Flexible bandwidth

E-LINECE A CE B

Video Source

Video Display

EMXP

EMXP

EMXP

9 | © 2015 Infinera

What: Define bandwidth limits

based on date and time

Why: Define services providing

more bandwidth when utilization is low (off-hours)

Define services only used at scheduled intervals

Bandwidth Calendaring

Network wideUtilization

Time 00:00 23:0012:0006:00 18:00

0%

100%

50%Threshold

Time 00:00 23:0012:0006:00 18:00

Bandwidth Calendar for Customer X

0%

100%

50%

E-LINECE A CE B

EMXP

EMXP

EMXP

10 | © 2015 Infinera

What: Possibility to optimize the route of

existing services

Why: Provides freed-up resources and

improved services Avoid sub-optimal routing as a

result of changed network topology

Optimize services

CE EMXP

EMXP

EMXPEDU

Better path

CE EDU

Existing path

11 | © 2015 Infinera

What: Operator provides a number of

ports for connectivity between sites

Why: Customer can choose to connect

or disconnect network ports Customer get automated service

realization by connecting end-point devices

Instant services scenario

E-LINE

CE B

EMXP

EMXPEMXP

CE A

12 | © 2015 Infinera

What: Enables services definitions to be

bound up with a customer rather than to a physical network location

Why: Improving operational efficiency Services follow the customer –

e.g. when moving its offices increases customer satisfaction

EDU / Host mobility

CE EMXP

EMXP

EMXPEDU CE EDU

CE

EDU

13 | © 2015 Infinera

What: Basic level of protection provided

without additional configuration of rings or linear protection

Why: Automated service restoration in

case of faults/fiber break

Automatic Restoration

CE EMXP

EMXP

EMXPEDU CE EDU

14 | © 2015 Infinera

What: Tell network to re-route services

away from a network element using a ”make-before-break” approach

Why Allows operator to remove traffic

from a given element using a hitless approach• Reduces network impact of a

planned upgrade or replacement

Redirect / Reroute services

CE EMXP

EMXP

EMXPEDU

Alternative path

CE EDU

Upgrade target

15 | © 2015 Infinera

VirtualizationSDN based vRouter in Metro P-OTS

16 | © 2015 Infinera

Goal

Physical topology

Router topology

vRouter

IP Traffic IP Traffic

EMXP

EMXP

EMXP

17 | © 2015 Infinera

vRouter – How

OSPF PDUsOSPF PDUs

RoutingTable

ControllerForwarding Entries

Picks up control plane traffic:• From each router neighbor• For example OSPF packets

Passes the control packet to routing engine:• And sends back packets to edges

Routing engine computes routing table• Which is turned into forwarding

rules

vRouter

OSPF ISIS

Data flowEMXP

EMXP

EMXP

18 | © 2015 Infinera

EMXP

vRouter – Why – Mobile backhaul

Link for protection

Without vRouter:• All traffic goes to the core router• Traffic between edge routers• Even traffic that could go between ports

in the switch

With vRouter:• Enables effective routing between routers• Traffic is no longer routed via core router

• Limited configuration needed for the vRouter.• IS-IS would require no configuration• Any change in router configuration

reflected in vRouter

EMXP

EMXP

19 | © 2015 Infinera

vRouter – Why – Smart aggregation Without vRouter:

• Each client interface adds a port specific vlan• Router has one vlan interface per client interface on

port aggregation device• All traffic goes to router

• Even traffic that could go between ports in switch• Event traffic that could go between aggregation

switches

With vRouter:• One vRouter is created over the aggregation switches

in the network• All metro flows are handled efficiently• Port to port flows• Flows between aggregation switches

• Same operational model for vRouter as in routers• L2 service can still be provided in parallel

CECE CE

12

3

VLANFlows

CECE CE

EMXP

20 | © 2015 Infinera

vRouter for Metro P-OTS SDN 2.0 on existing EMXPs

Supported on existing EMXP family and PT-Fabric

Core network agnostic

Packet over OTU

MPLS-TP over Ethernet

Native Ethernet

L3 Services Internet L3VPN IPTV

Mobile services 3G LTE

IP Router

Mobile SGW

ROADM

λ

OTN(switching grooming)

MPLS(LSRs LERs)

EMXP

Ethernet(SVLAN, ERPS, …)

WDM foundation - Flexible Optical Networks

EMXP

L2 services E-Line E-LAN E-Tree E-Access

L3 services VPN Provider Edge Service chaining

PT-Fabric

PT-Fabric

21 | © 2015 Infinera

Summary Open SDN in Metro P-OTS Networks

Open SDN architecture• OpenFlow based Native Packet Optical • Open APIs for network programmability

Applications oriented for metro transport services• Bandwidth on demand• Service chaining• Multi-layer coordination• Supporting Layer 0 to Layer 3 services

22 | © 2015 Infinera

Thank you