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Liaison statement
Publication of new RFC on PCE Architecture

State Posted
Submitted Date 2006-09-08
From Group pce
From Contact Adrian Farrel
To Group ITU-T-SG-15-Q14
To Contacts Greg Jones <>
Cc Kam Lam <>
Dean Cheng <>
Stephen Trowbridge <>
Scott Bradner <>
Ross Callon <>
Bill Fenner <>
JP Vasseur <>
PCE mailing list <>
Response Contact Adrian Farrel <>
Technical Contact Adrian Farrel <>
Purpose For information
Attachments (None)
The PCE Working Group of the IETF is pleased to inform you of the publication
of a new RFC on the PCE architecture.

RFC 4655 is titled "A Path Computation Element (PCE)-Based Architecture"

The Abstract of this RFC reads as follows:

   Constraint-based path computation is a fundamental building block for
   traffic engineering systems such as Multiprotocol Label Switching
   (MPLS) and Generalized Multiprotocol Label Switching (GMPLS)
   networks.  Path computation in large, multi-domain, multi-region, or
   multi-layer networks is complex and may require special computational
   components and cooperation between the different network domains.

   This document specifies the architecture for a Path Computation
   Element (PCE)-based model to address this problem space.  This
   document does not attempt to provide a detailed description of all
   the architectural components, but rather it describes a set of
   building blocks for the PCE architecture from which solutions may be

The RFC can be downloaded without charge from:

We believe that this RFC will be of interest to you in your work on G.7715.2
and we would welcome any comments or questions about this RFC or any other
issues related to PCE through our open mailing list. For subscription
information about the mailing list and other information about the PCE working
group, please visit our Web page at:

Best regards,
Adrian Farrel and JP Vasseur
PCE Working Group Co-chairs