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-07.txt
Pages : 8
Date : 2005-12-1
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 Label
Switched Path (TE LSP) on a downstream Label Switching Router (LSR).
However, existing protocol mechanisms are not sufficient to find an MP
address in multi-domain routing networks where a domain is defined as
an IGP area or an Autonomous System. Hence, the current MPLS Fast
Reroute mechanism cannot be used in order to protect inter-domain TE
LSPs from a failure of an ABR (Area Border Router) or ASBR (Autonomous
System Border Router) respectively. This document specifies the use of
existing Route Record Object (RRO) IPv4 and IPv6 sub-objects (with a
new flag defined) thus defining the node-id subobject in order to solve
this issue. The MPLS Fast reroute mechanism mentioned in this document
refers to the "Facility backup" MPLS TE Fast Reroute method.
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