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This draft is a work item of the Routing Area Working Group Working Group of the IETF.
Title : Basic Specification for IP Fast-Reroute: Loop-free Alternates
Author(s) : A. Atlas, A. Zinin
Filename : draft-ietf-rtgwg-ipfrr-spec-base-06.txt
Pages : 28
Date : 2007-3-5
This document describes the use of loop-free alternates to provide
local protection for unicast traffic in pure IP and MPLS/LDP networks
in the event of a single failure, whether link, node or shared risk
link group (SRLG). The goal of this technology is to reduce the
micro-looping and packet loss that happens while routers converge
after a topology change due to a failure. Rapid failure repair is
achieved through use of precalculated backup next-hops that are loop-
free and safe to use until the distributed network convergence
process completes.
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