Name: draft-ietf-mpls-nodeid-subobject-02
Title: Definition of an RRO node-id subobject
State: Pending
Authors: Jean Vasseur
Group: Multiprotocol Label Switching (mpls)
Date: 2004-03-30
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. 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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