ofc/nfoec: software defined optical networks
DESCRIPTION
Check out Jim Theodoras' slides from OFC/NFOEC 2013 on software defined optical networksTRANSCRIPT
Jim Theodoras
March 2013
SoftwareDefinedOpticalNetworks
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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
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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
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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
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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
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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
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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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Breaking a Huge Task into Layers• Transport Layer
• Switching Layer
• Orchestration Layer
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Breaking a Huge Task into Layers• Transport Layer
• Switching Layer
• Orchestration 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
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Breaking a Huge Task into Layers• Transport Layer
• Switching Layer
• Orchestration Layer
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SDN and Optical, the Perfect Match
• Virtualization beyond Data Center boundaries
Thank you
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