A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Routing Area Working Group Working Group of the IETF.
Title : An Architecture for IP/LDP Fast-Reroute Using Maximally Redundant Trees
Author(s) : Alia Atlas
Robert Kebler
Gabor Sandor Enyedi
Andras Csaszar
Maciek Konstantynowicz
Russ White
Mike Shand
Filename : draft-ietf-rtgwg-mrt-frr-architecture-01.txt
Pages : 25
Date : 2012-03-12
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-ietf-rtgwg-mrt-frr-architecture-01.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-rtgwg-mrt-frr-architecture-01.txt
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