A new Request for Comments is now available in online RFC libraries.
RFC 3479
Title: Fault Tolerance for the Label Distribution
Protocol (LDP)
Author(s): A. Farrel, Ed.
Status: Standards Track
Date: February 2003
Mailbox: afarrel@movaz.com
Pages: 52
Characters: 115778
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-mpls-ldp-ft-06.txt
URL: ftp://ftp.rfc-editor.org/in-notes/rfc3479.txt
Multiprotocol Label Switching (MPLS) systems will be used
in core networks where system downtime must be kept to an
absolute minimum. Many MPLS Label Switching Routers
(LSRs) may, therefore, exploit Fault Tolerant (FT)
hardware or software to provide high availability of the
core networks.
The details of how FT is achieved for the various
components of an FT LSR, including Label Distribution
Protocol (LDP), the switching hardware and TCP, are
implementation specific. This document identifies issues
in the LDP specification in RFC 3036, "LDP Specification",
that make it difficult to implement an FT LSR using the
current LDP protocols, and defines enhancements to the
LDP specification to ease such FT LSR implementations.
The issues and extensions described here are equally
applicable to RFC 3212, "Constraint-Based LSP Setup Using
LDP" (CR-LDP).
This document is a product of the Multiprotocol Label Switching
Working Group of the IETF.
This is now a Proposed Standard Protocol.
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 state and status of this protocol. Distribution
of this memo is unlimited.
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Authors, for further information.
Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute
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