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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