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Shortcuts. Agenda Indian Scenario P2P PBB-TE P2MP PBB-TE Critical Link Segment Definition State-machines Fault Scenario Performance. Infrastructure Protection. M Vinod Kumar CTO office Tejas Networks. Agenda. Infrastructure Protection Spanning Tree

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  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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