I-D ACTION:draft-ietf-ccamp-rsvp-node-id-based-hello-03.txt

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This draft is a work item of the Common Control and Measurement Plane Working Group of the IETF.

	Title		: Node ID based RSVP Hello: A Clarification Statement
	Author(s)	: Z. Ali, et al.
	Filename	: draft-ietf-ccamp-rsvp-node-id-based-hello-03.txt
	Pages		: 7
	Date		: 2006-3-7
	
Use of Node-ID based RSVP Hello messages is implied in a number of
cases, e.g., when data and control plan are separated, and when TE links are unnumbered. Nonetheless, this implied behavior is unclear
and this document formalizes use of Node-ID based RSVP Hello session
in some scenarios. The procedure described in this document applies 
to both Multi-Protocol Label Switching (MPLS) and Generalized MPLS 
(GMPLS) capable nodes.

When link level failure detection is performed by some means other 
than exchanging RSVP Hello messages, use of Node-ID based Hello 
session is optimal for detecting signaling adjacency failure for 
Resource reSerVation Protocol-Traffic Engineering (RSVP-TE). The use 
of Node-ID based Hello session is optimal in the sense that as long as
there is IP reachability to the nieghbor (node-id), the signalling 
adjacency will remain up.

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