Jorg-Peter Elbers delivers presentation at IP Expo 2012 in London about how expanding OpenFlow SDN protocol beyond the data centre will lead to more efficient cloud networking environments and business innovation.

1. Expanding OpenFlow
Beyond the Data Centre
Jörg-Peter Elbers
ADVAnced Technology
IP Expo, London, Oct 2012

2. Outline
• Software Defined Networks & OpenFlow
• Optical Domain Extensions and Applications
• Summary
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3. SDN & OpenFlow in a Nutshell
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4. Software Defined Networking (SDN)
App App App App
API
SDN enables
End-user value creation
Virtual Network Slices
new networking
API paradigms
through flexibility,
Network OS
agility, and
API programmability.
Data Plane
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5. SDN Principles & Benefits
• Deterministic behaviour,
Separation of data
predictable performance,
and control plane
rapid convergence
Flow oriented • Simplified planning,
data plane global optimization,
off-line analysis
Centralized
management & control • Secure multi-tenancy &
infrastructure sharing
HW abstraction
and virtualization • Better machine &
service mobility
Network • Application-driven
programmability
networking
Key SDN innovations: virtualization and application-level programmability.
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6. User Expectations
More efficient network, faster service delivery & lower hardware costs.
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7. OpenFlow in a Nutshell
The most prominent protocol for Open Source SDN implementations.
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8. Early SDN/OpenFlow Adopters
Research & campus networks Web 2.0 Data centers
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9. SDN Inside The Data Center
Orchestration of IT & network resources
Virtual Virtual
storage Virtual server
network
Storage pool Fabric interconnect Server pool
SDN adds missing piece to the virtualization puzzle: Network virtualization.
9 © 2012 ADVA Optical Networking. All rights reserved. Confidential.

10. SDN Beyond The Data Center
1 Optical Cloud Connectivity 2 Packet-based Cloud Access
• Extend SDN into the optical domain • Extend SDN to access & backhauling
• Provide low-latency/high capacity • Manage QoE with constrained capacity
• Hide optical layer complexity • Allow content/service-aware optimization
Carrier Ethernet
Optical network access
Programmable connectivity for data center & carrier infrastructure
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11. Optical OpenFlow
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12. SDN for Cloud Connectivity
• Allow flexible resource
pooling on a global scale
• New applications
• Follow the sun/dark
• Load balancing
• Bandwidth calendaring
• Bulk transfers
• Optical SDN for low
latency/high capacity
• But: Optical brings new
challenges to SDN
Optical OpenFlow requires extensions on protocol & architecture level.
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13. Circuit Switching with OpenFlow
Circuit Switching Extensions
Circuit Flows
In In 13
Starting Signal Out Out 13
Starting Signal
VCG VCG
Port Lambda Time-Slot Type Port Lambda Time-Slot Type
Good for electrical switches, but limited support for optical wavelength switching.
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14. Optical OpenFlow Extensions
OpenFlow Support for Optical Performance Constraints
FSP 3000 ROADM platform Sequential Lightpath Setup/Teardown
Optical Power Balancing
Optical Node Model:
Wavelenth Continuity &
Dynamic Switching Constraints
Connectivity & Topology Discovery
Signal Mapping & Format Compatibility
1:N WSS
WSS
WSS
WSS
1:N WSS
1:N WSS
WSS λ Block 1:N WSS
OSC
WSS 1:N WSS
(Out-of-band)
Any λ
λ2λ3 λ1
C
TX
Optical extensions required to deal with the analogue nature of the optical layer.
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15. Optical OpenFlow Modes
• Flat Network Mode
• Optical network exposed to OpenFlow controller
• OpenFlow controller with circuit & optical extensions
• One OpenFlow agent per network element
• Optical layer control as OF controller app
• Encapsulated Optical Network Mode (aka Fat Switch Mode)
• Optical network abstracted as virtual switch
• Plain packet-based OpenFlow controller
• Single OpenFlow agent per optical domain
• Optical layer control by established technologies
Compromises possible between hiding optical complexity and exposing topology.
15 © 2012 ADVA Optical Networking. All rights reserved. Confidential.

16. First Optical OpenFlow Demonstration
Packet over Wavelength-Switched ROADM Network
Orchestration of IT &
Networking Resources Path
by Controller App
Computation
(2) Submit Request including (1) Publish Service and
User Context (3) Reserve Resources Infrastructure Information
Request
High Capacity
ROADM Network
Streaming
End-User
Server
Joint demo with Uni Essex
Visualization (NOW: BRISTOL UNIVERSITY)
Facility @ Future Internet Assembly,
Aalborg, May 10-11, 2012
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17. First International Demonstration
Multi-Domain & Multi-Technology Packet over Fixed/Flexi Grid
See ECOC‘12 Postdeadline Paper Th.3.D.2
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18. Use Case Analysis: Cloud Datacenter
Capacity savings by flexible network resource allocation
Shared vs. dedicated resource model
80%
Node capacity savuings
70%
N node ring 60%
50%
40%
30%
N=4
20%
10% N=8
Uniform node-to-node traffic
0%
100%
90%
80%
excess
Network Utilization
Excess traffic / base traffic
70%
60% traffic
50%
40%
30%
20% base Dedicated node resources for base traffic
10%
traffic Model a): dedicated resources for excess traffic
0%
Model b): shared resources for excess traffic
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Time
> 30% node capacity savings from shared model if excess traffic > base traffic.
18 © 2012 ADVA Optical Networking. All rights reserved. Confidential.

19. Summary
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20. Summary & Conclusions
• SDN brings programmability and
virtualization to the networking world
OpenFlow
• OF is the most prominent open-source
SDN protocol today
• Extensions allow OF-controlled
Source: Gartner technology hype cycle,
optical cloud connectivity adapted from Wikipedia
• Prospects: more network efficiency and faster service delivery
• SDN & Openflow are still at the beginning of its life cycle …
… and require ongoing development
20 © 2012 ADVA Optical Networking. All rights reserved. Confidential.

21. Thank you
jelbers@advaoptical.com
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22. OFELIA OFELIA - Linking Infrastructure
EU FP7
OpenFlow in Europe
and Applications
Eight Interconnected OpenFlow Islands
• Project partners:
EICT, DTAG, UESSEX, I2CAT, TUB, NEC, IBBT, ETH
Zürich, ADVA, STANFORD
• Duration: Sep. 2010 – Aug. 2013 (36 months)
• Provide a unique experimental facility based
on OpenFlow
• Control the network itself – precisely and dynamically
• Allows virtualizing and controlling the network environment
through secure and standardized interfaces
• Allows for Experimentation on multi-layer and multi-technology
networks – Program your own cloud network!
• Islands publicly available for experiments
UEssex Island equipped with ADVA ROADMs
• OFELIA belongs to the second wave of FIRE projects under FP7
More information at: http://www.fp7-ofelia.eu
tu-berlin.de ibbt.be ethz.ch telekom.com eict.de i2cat.cat nec.com essex.ac.uk advaoptical.com stanford.edu
22 © 2012 ADVA Optical Networking. All rights reserved. Confidential.