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Title : Extensions to GMPLS RSVP Graceful Restart
Author(s) : A. Satyanarayana, L. Berger, D. Papadimitriou
Filename : draft-aruns-ccamp-rsvp-restart-ext-00.txt
Pages : 11
Date : 2004-2-10
This document describes extensions to the RSVP Graceful Restart
defined in [RFC3473]. The extensions enable the recovery of RSVP
signaling state based on the Path message last sent by the node being
restarted. Previously defined Graceful Restart mechanisms, also
called nodal faults, permit recovery of signaling state from adjacent nodes when the data plane has retained the associated forwarding
state across a restart. These mechanisms do not fully support
recovery of ingress nodes or recovery of all RSVP objects. The
presented extensions use the RSVP Hello Extensions defined in
[RFC3209], and extensions for state recovery on nodal faults defined
in [RFC3473]. With the presented extensions the restarting node can
recover all previously transmitted Path state including the ERO and
the downstream (outgoing) interface identifiers. The extensions can
also be used to recover signaling state after the restart of an
ingress node.
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