OFC/NFOEC: Software Defined Optical Networks

Jim Theodoras

March 2013

SoftwareDefinedOpticalNetworks

© 2013 ADVA Optical Networking. All rights reserved. Confidential.22

What is SDN?

• Today, routers control themselves, passing messagesbetween them

• SDN separates the Control and Data planes

• A separate, centralized controller then takes command

ControlData

Data Data

Data

Data

Control

ControlData

ControlData

ControlData


SDN in a Single Sentence

• The hope/expectation of better efficiency/utilization through identifying flows of packets and making smarter holistic decisions

• A good analogy would be the Air Traffic Control system

* flightradar24.com

* http://virtualskies.arc.nasa.gov/atm/6.html

* http://mattsflight.blogspot.com


Benefits of Data Center Interaction

• Decades of work have yielded today’s agile core networks

• Unfortunately, the information to make intelligent decision resides at higher layers

• Problem made worse by today’s flow dominated traffic

Router Router

IntelligentMUX

HybridEDFA/RAMAN

Amp

AgileCore

Network

GridlessROADM

CoherentReceiver


Example of SP Applications

• Telefonica I&D – IP Offloading Manager

• When traffic exceeds a threshold, an additional link is provisioned

Configured Threshold

New circuit provisioning time

Rollback Threshold

Circuit deprovisioning time

49 second bring-up 4 second teardown Fully automatic


SDN for Dynamic SP Infrastructure

• Provisioning for peak traffic is losing battle, and only getting worse.

• Answer is dynamic network infrastructure.

Daytime Configuration All Offices/Sites working

Nighttime Configuration Backup between A/B Double the bandwidth

* Details to be announced at Internet2 April 2013.

Site A

Site B

Site C

1x 10G

1x 10G

1x 10G

Site A

Site B

Site C

2 x 10G


Direct vs Indirect Model

• How to best extend SDN to transport layer?

• Direct control yields most potential benefits at cost of complexity and latency

• Indirect control is easier to implement, but limits potential of future apps

Orchestration Layer


Breaking a Huge Task into Layers• Transport Layer

• Switching Layer

• Orchestration Layer



• Switching Layer


DW

DM

Sh

elf

10GE

DWDM ShelfD

WD

M S

helf

10

0G

OTN

100G OTNFSP3000

PTX-LR2

PTX3000

10GE

100GE

10

GE

PTX-LR1



• Switching Layer



SDN and Optical, the Perfect Match

• Virtualization beyond Data Center boundaries

[email protected]

Thank you

IMPORTANT NOTICE

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OFC/NFOEC: Software Defined Optical Networks

Technology

Transcript of OFC/NFOEC: Software Defined Optical Networks