PCE Communication Protocol (PCECP) specific requirements for Inter-Area (G)MPLS Traffic Engineering

Document Type Replaced Internet-Draft (individual)
Author Jean-Louis Le Roux 
Last updated 2011-10-04 (latest revision 2005-10-17)
Replaced by RFC 5376
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IESG IESG state Replaced by draft-ietf-pce-interas-pcecp-reqs
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


For scalability purposes a network may comprise multiple IGP areas. An inter-area TE-LSP is an LSP that transits through at least two IGP areas. In a multi-area network, topology visibility remains local to a given area, and a head-end LSR cannot compute alone an inter-area shortest constrained path. One key application of the Path Computation Element (PCE) architecture is the computation of inter- area TE-LSP paths. In this context, this document lists a detailed set of PCE Communication Protocol (PCECP) specific requirements for support of inter-area TE-LSP path computation. It complements generic requirements for a PCE Communication Protocol.


Jean-Louis Le Roux (jeanlouis.leroux@francetelecom.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)