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Draft-liu-mpls-rsvp-te-gr-frr-00

Draft-liu-mpls-rsvp-te-gr-frr-00. By H. Autumn Liu & Sriganesh Kini 76 th IETF, Hiroshima Japan. R1. R2. R3. R4. R5. R6. Protected LSP : R1-R2-R3-R4-R5 Bypass LSP : R2-R6-R4 PLR : R2 MP : R4. Problem we’re solving. RSVP GR when FRR is in effect. Problem we’re solving (Cont).

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Draft-liu-mpls-rsvp-te-gr-frr-00

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  1. Draft-liu-mpls-rsvp-te-gr-frr-00 By H. Autumn Liu & Sriganesh Kini 76th IETF, Hiroshima Japan

  2. R1 R2 R3 R4 R5 R6 Protected LSP : R1-R2-R3-R4-R5 Bypass LSP : R2-R6-R4 PLR : R2 MP : R4 Problem we’re solving • RSVP GR when FRR is in effect

  3. Problem we’re solving (Cont) • PLR and MP are more than one hop away via bypass tunnel for facility protection • When FRR triggers, traffic on protected LSPs is switched to go through bypass tunnel • There is no hello between the PLR and MP if they are multiple hops away

  4. Solution • Allow RSVP hello session to be established between non-directly-connected nodes • Hello is sent via IP, TTL is set to 255 • Hello is sent via tunnel, TTL is set to 1

  5. Solution (Cont) • Non-directly-connected neighbor discovery - discovered dynamically, e.g. by bypass tunnel setup and being selected for FRR - manual configuration

  6. Questions / Comments?

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