I-D ACTION:draft-ietf-ccamp-rsvp-restart-ext-06.txt

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A New Internet-Draft is available from the on-line Internet-Drafts 
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This draft is a work item of the Common Control and Measurement Plane Working Group of the IETF.

	Title		: Extensions to GMPLS RSVP Graceful Restart
	Author(s)	: A. Satyanarayana, R. Rahman
	Filename	: draft-ietf-ccamp-rsvp-restart-ext-06.txt
	Pages		: 24
	Date		: 2006-12-8
	
This document describes extensions to the RSVP Graceful Restart
   mechanisms defined in RFC 3473.  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 recovery from 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 signaling state recovery on ingress
   nodes or recovery of all RSVP objects.  The presented extensions use
   the RSVP Hello extensions defined in RFC 3209, and extensions for
   state recovery on nodal faults defined in RFC 3473.  With the
   presented extensions the restarting node can recover all previously
   transmitted Path state including the Explicit Route Object and the
   downstream (outgoing) interface identifiers.  The extensions can also
   be used to recover signaling state after the restart of an ingress
   node.  The extensions optionally support the use of Summary Refresh,
   defined in RFC 2961, to reduce the number of messages exchanged
   during the Recovery Phase when the restarting node has recovered
   signaling state locally for one or more LSPs.

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