Evaluating efficiency of multi layer switching in future optical transport networks
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The document discusses the benefits of multi-layer switching and super-channel switching in future optical transport networks. Multi-layer switching combines the advantages of digital and optical switching to provide capital expenditure and operational expenditure benefits as bandwidth growth increases. Super-channel switching offers significant operational expenditure benefits through fewer components, faster deployment times, and additional network capacity compared to 100G switching architectures.
Evaluating efficiency of multi layer switching in future optical transport networks
- 1. 1 | Infinera Confidential & Proprietary Evaluating Efficiency of Multi- Layer Switching in Future Optical Transport Networks Anuj Malik, Soumya Roy, Abhijeet Deore, Onur Turkcu, Satyajeet Ahuja, Steven J. Hand and Serge Melle OFC 2013
- 2. 2 | Infinera Confidential & Proprietary Carriers Need More Capacity Drivers Video Mobility Cloud
- 3. 3 | Infinera Confidential & Proprietary Core Network Traffic Demands and Patterns Customer Data Center High Proportion of <100G demands (1/2.5/10G) Mesh Traffic Patterns More and More Express Traffic Digital Switching Optical Switching
- 4. 4 | Infinera Confidential & Proprietary Multi Layer Switching Combines Best In Class Optical and Digital BW management ROADM Optical BW Management Photonic Integration for pervasive digital grooming/switching Unconstrained sub-l digital switching ODU0/ODUflex switching granularity Reconfigurable optical switching Dynamic add/drop/express for optical channels Reconfigurable optical switching for OpEx Savings Dynamic add/drop/express for optical channels Unconstrained sub-l digital switching ODU0/ODUflex switching granularity Wavelength level Protection Digital BW Management ROADM Optical BW Management Digital BW Management Optical BW Management for Super-Channels Photonic Integration for pervasive digital grooming/switching Unconstrained sub-l digital switching Reconfigurable optical switching for OpEx Savings Dynamic add/drop/express for optical channels Wavelength Level Protection
- 5. 5 | Infinera Confidential & Proprietary Architecture Comparisons Digital Switching Architecture Optical Switching Architecture Multi-Layer Switching Architecture
- 6. 6 | Infinera Confidential & Proprietary 26,629 km fiber network 60 total add/drop nodes • 17 Tier 1 • Includes 8 data center nodes • Includes 2 dual POP sites (London, Paris) • 26 Tier 2 cities • 17 Tier 3 cities • 238 optical line amplifier sites Representative of typical long-haul collector network • “Carrier’s carrier” service provider • Tier 1/PTT national long-distance international network Pan-European Long-Haul Network Fiber Type Fiber Distance (km) Number of Spans E-LEAF 17689 215 Silica Core 486 3 SMF28 7826 93 TWRS 627 8 Total 26629 319
- 7. 7 | Infinera Confidential & Proprietary 3-tier service demand model • Gravity model for A-Z demands between all city-city pairs • Overlay data traffic from data centers • Overlay international traffic from trans-oceanic cables Service demands across range of interface rates: 1G, 2.5G, 10G, 40G and 100G Average 57% growth per period over 5 periods Final traffic volume of 55Tb/s • 4Tb/s average capacity per WDM link Pan-European Long-Haul Collector Network ServiceDemandAssumptions Network Traffic Volume (Tb/s) TotalTrafficVolume(Tb/s) 0 10 20 30 40 50 60 Period 1 Period 2 Period 3 Period 4 Period 5 9 Tb/s 26 Tb/s 55 Tb/s 100G 40G 10G 2.5G 1G Service I/F 17 Tb/s 39 Tb/s
- 8. 8 | Infinera Confidential & Proprietary Benefits of Multi Layer Switching CAPEX Reduction: 13-22% less number of 100G ports Digital Switching More efficient with less filled demands Optical Switching More efficient with fully filled demands Multi Layer Switching Combines benefits of both digital and optical switching
- 9. 9 | Infinera Confidential & Proprietary Beyond 100G - Super-channels LINE MODULE Delivers excellent optical performance Must be provisioned in a single operational cycle Operational Scale Fiber Capacity Next Gen Services Super-channels are an evolution in DWDM in which several optical carriers are combined to create a composite signal of the desired capacity
- 10. 10 | Infinera Confidential & Proprietary Super-Channel vs. 100G Switching Architecture Fewer Components, Less Space Fewer Fiber Connections, Less Complex More Capacity and Scalability Super-Channel ROADM West East North South WSS WSS Transponder Transponder Transponder Add/drop Transponder 19 Line Modules 48 Patch Fibers* 2.5 Bays West East North South Add/drop Transponder Transponder Transponder WSS WSS Transponder Transponder 100G ROADM Transponder Transponder Transponder 96 Line Modules 136 Patch Fibers* 4+ Bays *4-way Colorless ROADM Node, 8Tb/s WDM capacity per direction, 50% Add-Drop
- 11. 11 | Infinera Confidential & Proprietary Benefitsof Super-ChannelBased Switching 7-29% Additional Network Service Ready Capacity with Super channels Provisioned Capacity OPEX Reduction – Fewer components, faster deployment time Additional Service Ready Capacity
- 12. 12 | Infinera Confidential & Proprietary Conclusion Multi Layer Switching - Combines the benefits of Digital and Optical Switching - Provides CAPEX and OPEX benefits with BW growth Super-Channel Level Switching - Offers significant OPEX benefits with additional service ready capacity
- 13. 13 | Infinera Confidential & Proprietary Thank You
- 14. 14 | Infinera Confidential & Proprietary Super-Channel vs. 100G Switching Architecture Fewer Components, More Reliable Fewer Fiber Connections, Less Complex More Capacity and Scalability Super-Channel ROADM West East North South WSS WSS Transponder Transponder Transponder Add/drop Transponder 40 FRUs 32 Patch Fibers* West East North South Add/drop Transponder Transponder Transponder WSS WSS Transponder Transponder 100G ROADM Transponder Transponder Transponder 176 FRUs 136 Patch Fibers* * 4 degree ROADM Node, 4Tb/s WDM capacity per direction, 50% Add-Drop FSP FSP