A new Request for Comments is now available in online RFC libraries.
RFC 4561
Title: Definition of a Record Route
Object (RRO) Node-Id Sub-Object
Author: J.-P. Vasseur, Ed.,
Z. Ali, S. Sivabalan
Status: Standards Track
Date: June 2006
Mailbox: jpv@cisco.com,
zali@cisco.com,
msiva@cisco.com
Pages: 10
Characters: 19362
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-mpls-nodeid-subobject-07.txt
URL: http://www.rfc-editor.org/rfc/rfc4561.txt
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 Interior Gateway Protocol (IGP) area or an Autonomous
System (AS). Hence, the current MPLS Fast Reroute mechanism cannot be
used in order to protect inter-domain TE LSPs from a failure of an Area
Border Router (ABR) or Autonomous System Border Router (ASBR). This
document specifies the use of existing Record Route Object (RRO) IPv4
and IPv6 sub-objects (with a new flag defined) thus defining the
node-id sub-object 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. [STANDARDS TRACK]
This document is a product of the Multiprotocol Label Switching
Working Group of the IETF.
This is now a Proposed Standard Protocol.
STANDARDS TRACK: This document specifies an Internet standards track
protocol for the Internet community,and requests discussion and
suggestions for improvements.Please refer to the current edition of the
Internet Official Protocol Standards (STD 1) for the standardization
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USC/Information Sciences Institute
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