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This draft is a work item of the Path Computation Element Working Group of the IETF.
Title : Extensions to the Path Computation Element Communication Protocol (PCEP) for Route Exclusions
Author(s) : T. Takeda, E. Oki, A. Farrel
Filename : draft-ietf-pce-pcep-xro-06.txt
Pages : 17
Date : 2008-7-18
The Path Computation Element (PCE) provides functions of path
computation in support of traffic engineering in Multi-Protocol
Label Switching (MPLS) and Generalized MPLS (GMPLS) networks.
When a Path Computation Client (PCC) requests a PCE for a route, it
may be useful for the PCC to specify, as constraints to the path
computation, abstract nodes, resources, and Shared Risk Link Groups
(SRLGs) that are to be explicitly excluded from the computed route.
Such constraints are termed route exclusions.
The PCE Communication Protocol (PCEP) is designed as a communication
protocol between PCCs and PCEs. This document presents PCEP
extensions for route exclusions.
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