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This draft is a work item of the Path Computation Element Working Group of the
IETF.
Title : PCE Communication Protocol (PCECP) Specific
Requirements for Inter-Area (G)MPLS Traffic Engineering
Author(s) : J. Le Roux
Filename : draft-ietf-pce-pcecp-interarea-reqs-03.txt
Pages : 10
Date : 2006-10-23
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) based architecture is the computation of
inter-area TE-LSP paths. 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.
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