Check out Jim Theodoras' slides from OFC/NFOEC 2013 on software defined optical networks

1. Software
Defined
Optical
Networks
Jim Theodoras
March 2013

2. What is SDN?
• Today, routers control themselves, passing messages
between them
• SDN separates the Control and Data planes
• A separate, centralized controller then takes command
Control
Control
Data
Data
Control Control
Data Data
Data Data
Control
Data
Data
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3. 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
* http://mattsflight.blogspot.com
*
http://virtualskies.arc.nasa.gov/atm/6.
html *
flightradar24.co
m
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4. 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
Gridless
Hybrid ROADM
EDFA/RAMAN
Amp
Intelligent
MUX
Router Coherent Router
Receiver Agile
Core
Network
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5. Example of SP Applications
• Telefonica I&D – IP Offloading Manager
• When traffic exceeds a threshold, an additional link is provisioned
New circuit
provisioning time
Configured Threshold
Circuit deprovisioning
time
 49 second bring-up
Rollback Threshold  4 second teardown
 Fully automatic
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6. SDN for Dynamic SP Infrastructure
• Provisioning for peak traffic is losing battle, and only getting worse.
• Answer is dynamic network infrastructure.
Site B
Site A Daytime Configuration
2 x 10G
1x 10G  All Offices/Sites working
1x 10G Nighttime Configuration
1x 10G  Backup between A/B
 Double the bandwidth
Site C
* Details to be announced at Internet2 April 2013.
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7. 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
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8. Breaking a Huge Task into Layers
• Transport Layer
• Switching Layer
• Orchestration Layer
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9. Breaking a Huge Task into Layers
• Transport Layer
• Switching Layer PTX-LR2
• Orchestration Layer
100G OTN
10GE
DWDM Shelf PTX-LR1
PTX3000
DWDM Shelf
FSP3000
DWDM Shelf
100G OTN
10GE 10GE
100GE
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10. Breaking a Huge Task into Layers
• Transport Layer
• Switching Layer
• Orchestration Layer
10 © 2013 ADVA Optical Networking. All rights reserved. Confidential.

11. SDN and Optical, the Perfect Match
• Virtualization beyond Data Center boundaries
11 © 2013 ADVA Optical Networking. All rights reserved. Confidential.

12. Thank you
info@advaoptical.com
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