Name: draft-ietf-mpls-rsvp-lsp-fastreroute-07
Title: Fast Reroute Extensions to RSVP-TE for LSP Tunnels
State: Pending
Authors: Ping Pan, George Swallow, Alia Atlas
Group: Multiprotocol Label Switching (mpls)
Date: 2004-09-07
This document defines extensions to and describes the use of RSVP to
establish backup label-switched path (LSP) tunnels for local repair of LSP
tunnels. These mechanisms enable the re-direction of traffic onto backup
LSP tunnels in 10s of milliseconds in the event of a failure. Two methods
are defined here. The one-to-one backup method creates detour LSPs for each
protected LSP at each potential point of local repair. The facility backup
method creates a bypass tunnel to protect a potential failure point; by
taking advantage of MPLS label stacking, this bypass tunnel can protect a
set of protected LSPs that have similar backup constraints. Both methods
can be used to protect links and nodes during network failure. The
described behavior and extensions to RSVP allow nodes to implement either
or both methods and to interoperate in a mixed network.
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