Subject: RE: Unsignalled backup lsp

From: "Naidu, Venkata" <[email-masked]>
Date: Thu, 9 Aug 2001 09:46:22 -0400

Jie:

   There are many proprietary MPLS LSP protection/restoration/
   fast reroute/crankback drafts available but none of them 
   talks about how to compute maximally disjoint backup tunnel(s). 
   Because there are so many ways to achieve this (just by 
   making small additional changes in QoS/Constraint Routing 
   algos - CSPF)
  
   Look at:

     "Survivable Networks: Algorithms for Diverse Routing" 
     by Ramesh Bhandari

     M Kodialam and T. V. Lakshman, "Dynamic routing of bandwidth 
     guaranteed tunnels with restoration," in Proceedings of the 
     Conference on Computer Communications (IEEE Infocom),Mar2000
 
--Venkata Naidu

-> Hi,
-> 
-> I am reading the draft of "MPLS RSVP-TE Interoperability for Local
-> Protection/Fast Reroute." I have a question about the unsignalled
-> backup lsp: how to create it? Another question is how to compute the
-> bypass backup tunnel, CSPF?
-> 
-> Thanks in advance!
-> 
-> --Jie Zou
-> ----------------
-> MPLS Consortium
-> IOL,UNH