I-D ACTION:draft-ietf-mpls-nodeid-subobject-04.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF.

	Title		: Definition of an RRO node-id subobject
	Author(s)	: J. Vasseur, et al.
	Filename	: draft-ietf-mpls-nodeid-subobject-04.txt
	Pages		: 9
	Date		: 2005-1-28
	
In the context of MPLS TE Fast Reroute, the Merge Point (MP) address is 
required at the Point of Local Repair (PLR) in order to select a backup 
tunnel intersecting a fast reroutable Traffic Engineering LSP on a 
downstream LSR.  However, existing protocol mechanisms are not 
sufficient to find an MP address in multi-areas or multi-domain routing 
networks. Hence, the current MPLS Fast Reroute mechanism cannot be used 
to protect inter-area or inter-AS TE LSPs from a failure of an ABR 
(Area Border Router) or ASBR (Autonomous System Border Router) 
respectively. Such functionality has been listed as a clear requirement 
in [INTER-AREA-TE-REQS] and [INTER-AS-TE-REQS]. This document specifies 
the use of existing RRO IPv4 and IPv6 subobjects (with a new flag 
defined) to define the node-id subobject in order to solve this issue. 
Note that the MPLS Fast reroute mechanism mentioned in this document 
refers to the "Facility backup" MPLS TE Fast Reroute method.

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http://www.ietf.org/internet-drafts/draft-ietf-mpls-nodeid-subobject-04.txt

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