A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : IP Fast Reroute using Multiple Path Algorithm (MPA)
Author(s) : V. Naidu
Filename : draft-venkata-ipfrr-mpa-00.txt
Pages : 12
Date : 2004-7-6
This document describes a practical mechanism to implement IP fast
reroute using multiple viable loop-free next hops, which are not
necessarily shortest path to a destination. Upon a link failure,
all the destinations reachable via the primary nexthop will be
forwarded to pre-computed alternative loop free nexthops, if any,
without much delay. The mechanism does not impose any new protocol
message/capability exchange. The mechanism does not use any
tunneling techniques. It is shown that simple changes to existing
IGP shortest path computation and routing table structures are
sufficient to achieve the desired functionality. More over, routers
which implement the proposed mechanism can co-exist and can be fully
backward compatible with existing unmodified routers.
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