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Enhancing Network Reliability through PBB-TE Segment Protection in the Indian Context

This presentation explores the challenges and strategies for enhancing network reliability in India, particularly through the implementation of Provider Backbone Bridging - Traffic Engineering (PBB-TE). It covers critical aspects such as infrastructure protection, segment definition, fault scenarios, and state machines. With statistics highlighting fibre cuts in urban and long-haul networks, the presentation emphasizes the importance of segment protection switching and routing efficiency. Recommendations for utilizing alternate paths and traffic engineering are discussed to mitigate interruptions and improve network performance.

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Enhancing Network Reliability through PBB-TE Segment Protection in the Indian Context

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Presentation Transcript

  1. Shortcuts • Agenda • Indian Scenario • P2P PBB-TE • P2MP PBB-TE • Critical Link • Segment Definition • State-machines • Fault Scenario • Performance

  2. Infrastructure Protection M Vinod Kumar CTO office Tejas Networks

  3. Agenda • Infrastructure Protection • Spanning Tree • PBB-TE Segment Protection Switching (Indian Context) • Ethernet Ring Protection Switching

  4. Indian Scenario • Metro • 13 Fibre cuts per 1000 km per annum • Long Haul • 4 Fibre cuts per 1000 km per annum • Maximum cuts • 30 to 50 Fibre cuts per 1000km per month • Alternate paths • 3 to 5 path in metro and core • Providers want to use these paths!

  5. 1:1 Point-to-Point PBB-TE 4 cuts per 1000 km per annum Traffic Engineered 13 cuts per 1000 km per annum 3- 5 paths National PB 3- 5 paths 3- 5 paths MEP MEP Metro PBB-TE Metro PBB-TE PBB-TE supports only 1:1 P2P

  6. Point-to-Multipoint PBB-TE Traffic Engineered 3- 5 paths Metro PBB-TE 3- 5 paths National PB 3- 5 paths 3- 5 paths MEP MEP Metro PBB-TE Metro PBB-TE There is no P2MP protection mechanism in PBB-TE

  7. Critical Link or Node Protection Server 3- 5 paths Metro PBB-TE National PB 3- 5 paths 3- 5 paths MEP MEP Metro PBB-TE Metro PBB-TE

  8. Segment Protection Switching PBB => IEEE 802.1ah PBB-TE => IEEE 802.1Qay PBB-TE ISP => 802.1Qbf 3- 5 paths Segment National PB 3- 5 paths 3- 5 paths MEP MEP Metro PBB-TE Metro PBB-TE M=2 Ref: bf-vinod-CoordinationBetweenSegProtandPBBTE-0110-v01.pptx

  9. State-Machines ISP State-Machine ISP State-Machine PBB-TE State-Machine PBB-TE State-Machine National PB P1 P1 Relay Relay P3 P3 P2 P2 P4 P4 CBP PNP PNP CBP Protection Group Ref: bf-vinod-SPG-Entity-0110-v01.pptx

  10. Working of Segment Protection State-Machine State-Machine (1) (2) (1) National PB (2) P1 P1 Relay Relay P3 P3 P2 P2 P4 P4 PNP PNP PNP PNP • Collect the faults and perform M:1 protection • Change the egress port number in MAC table Ref: bf-vinod-SPG-Entity-0110-v01.pptx

  11. Performance

  12. Thank You

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