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Cell Relay Retreat>MPLS WG Archive>month:2001-Oct> msg00176



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draft-gan-fast-reroute

  • From: francis.arts@alcatel.be
  • Date: Thu, 11 Oct 2001 06:58:01 +0200
  • X-MIMETrack: Serialize by Router on BEMAIL06/BE/ALCATEL(Release 5.0.8 |June 18, 2001) at10/11/2001 06:58:02,Serialize complete at 10/11/2001 06:58:02


Hello,

I have a question on the RRO handling in <draft-gan-fast-reroute>.
   
       Node1 ====> Node2 ======> Node3 =====> Node4 ======> Egress
                      v                       ^  
                      |                       |  
                      +-----------------------+  

Notation: @(3-2) == IP address of node 3 on the link [node 3 - node 2].

Assume that the link between node 2 and node 3 fails. Then the detour [node 2 - node 4] is taking over. But what does node 2 then send in the RRO object of the RESV message to node 1: Does node 2 continue to send [@(2-1), @(3-2), @(4-3), @(egress-4)] or does node 2 send [@(2-1), @(detour between 4-2), @(egress-4)] or ...?

Thanks for any help you can provide,

        Francis.