Subject: I-D Action: draft-atlas-rtgwg-mrt-frr-architecture-00.txt

From: [email-masked]
Date: Mon, 04 Jul 2011 09:36:51 -0700

A New Internet-Draft is available from the on-line Internet-Drafts directories.

	Title           : An Architecture for IP/LDP Fast-Reroute Using Maximally Redundant Trees
	Author(s)       : Alia Atlas
                          Maciek Konstantynowicz
                          Gabor Sandor Enyedi
                          Andras Csaszar
                          Russ White
                          Mike Shand
	Filename        : draft-atlas-rtgwg-mrt-frr-architecture-00.txt
	Pages           : 21
	Date            : 2011-07-04

   As IP and LDP Fast-Reroute are increasingly deployed, the coverage
   limitations of Loop-Free Alternates are seen as a problem that
   requires a straightforward and consistent solution for IP and LDP,
   for unicast and multicast.  This draft describes an architecture
   based on redundant backup trees where a single failure can cut a
   point-of-local-repair from the destination only on one of the pair of
   redundant trees.

   One innovative algorithm to compute such topologies is maximally
   disjoint backup trees.  Each router can compute its next-hops for
   each pair of maximally disjoint trees rooted at each node in the IGP
   area with computational complexity similar to that required by
   Dijkstra.

   The additional state, address and computation requirements are
   believed to be significantly less than the Not-Via architecture
   requires.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-atlas-rtgwg-mrt-frr-architecture-00.txt

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This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-atlas-rtgwg-mrt-frr-architecture-00.txt