Transport SDN - Use Cases and Lessons Learnt
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Check out Jörg-Peter Elber's slides from this week's SDN World Congress in Bad Homburg
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Transport SDN - Use Cases and Lessons Learnt
- 1. Transport SDN Use Cases and Lessons Learnt Jörg-Peter Elbers, VP Advanced Technology SDN World Congress, Bad Homburg, 2013
- 2. Software-Defined Networking Network Network Apps User I/Fs Apps Network Apps Network Apps Network Apps Orchestration Open APIs (e.g. RESTful) Network services Platform services Applications & derived network services Open Northbound Interfaces Extensions SDN Controller Platform e.g. OpenFlow, Netconf/YANG, vendor-specific Southbound Interfaces Network Elements Turn the network into a programmable resource under central control. 2 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 3. Optical Transport SDN – Early Attempts “If all you have is a hammer, everything looks like a nail.” Abraham Maslow, 1966 Bottom-up approach: Add circuit & optical extensions to OpenFlow (1.0). 3 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 4. Packet Switch != Optical Switch Packet Switch Optical l-Switch Signal format Digital electronic Analog optical Signal structure Ethernet frames Signal dependent Payload visibility Yes No Topology discovery In-band (e.g. LLDP) Out-of band (e.g. OSC) Fabric connectivity Any-to-any Constrained Implicit Dep. on signal quality Any order Sequential Path feasibility Path set-up Target: Optical layer connectivity without having to deal with optical complexity. 4 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 5. SDN vs. “Legacy” Optical Transport SDN Principles Flow/circuit oriented data plane Centralized management & control HW abstraction and virtualization Network programmability “Legacy” Transport Separation of data and control plane Top-down approach: Facilitate optical layer virtualization & programmability. 5 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 6. with Extensions and/or Restful API Physical ressources Client interfaces Virtual Network Controller #N Abstraction Virtual Network Controller #1 Derived topology Optical Transport SDN Vision Provider interface Make the optical network a resource pool for low-latency, high speed connectivity. 6 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 7. Optical Network-as-a-Service „I need a 10GbE connection from A to Z.“ „I need a wavelength channel from B to G.“ Bandwidth as a Service Wavelength as a Service „I need 150GHz of contiguous spectrum from E to W.“ Optical Spectrum as a Service Optical network virtualization can happen at different interception points. 7 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 8. Use Case #1 Private Enterprise Cloud VM Cluster IBM G8264 OF Switch • IBM V7000 Storage Enterprise owns DCs & network in-between Site A Dual 10G • SDN abstracts network as one VM Cluster Flexible optical bandwidth sharing Site C • FSP 3000 Site B Storage Storage interconnect fabric VM Cluster Inter-DC fabric managed the same way as intra-DC switches Published: September 2013 More than 30% network capacity savings over static configuration. 8 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 9. Use Case #2 Service Provider Data Center Interconnect Datacenter applications Datacenter to WAN applications WAN applications OpenStack/OpenFlowApp App enabled DC workflow App App App App automation Service-provider bandwidth-on-demand Cloud Controller CP NW ST Optical Network Controller (ONC) 1TB Data Transfer 15 min 1G Datacenters Duration 10G Optical WAN Speed 2.5h 100M 1 day Published: ECOC PDP, September 2013 Automated spin-up of elastic cloud resources in minutes rather than days. 9 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 10. Use Case #3 Multi-Layer Network Optimization • Central controller for joint IP and WDM resource optimization • IP-to-WDM offloading & optical restoration Published : OFC/NFOEC, March 2013 Software-controlled network optimization yielding up to 50% CAPEX savings. 10 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 11. Use Case #4 Multi-Domain & Multi-Technology Network Services Published : ECOC PDP, September 2012 Delivering Optical-Spectrum-as-a-Service over multiple technology domains. 11 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 12. Lessons Learnt • SDN brings programmability & virtualization to optical transport • Improves network efficiency, but simpler operation is the real opportunity • Basic standards and protocols are there, but require further work • Definition of open interfaces (esp. north, east, west) is crucial • AVDA Optical Networking is actively engaged in ONF, ODP, IETF to drive further evolution Extending SDN to transport enables true end-to-end provisioning of data flows. Go with the flow … 12 © 2013 ADVA Optical Networking. All rights reserved. Confidential.
- 13. Thank you! jelbers@advaoptical.com IMPORTANT NOTICE The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited. The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation. Copyright © for the entire content of this presentation: ADVA Optical Networking.
- 14. Network Virtualization Virtual Network 2 Virtual Network 1 Networks 1 & 2 Any form of partitioning or combining a set of network resources, and presenting it in an abstracted form to users such that each user, through his set of resources, has a unique, separate view of the network. [Wang et al., JLT, 12/2012] User: Data center tenants, virtual machines, workloads or applications. Resources: Fundamental (nodes, links) or derived (topologies), can be virtualized recursively. Requirements: User isolation, configuration independence, elasticity and programmability. 14 © 2013 ADVA Optical Networking. All rights reserved. Confidential.