[rfc-dist] RFC 5521 on Extensions to the Path Computation Element Communication Protocol (PCEP) for Route Exclusions
rfc-editor at rfc-editor.org
Tue Apr 28 16:55:05 PDT 2009
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Title: Extensions to the Path Computation
Element Communication Protocol (PCEP) for Route
Author: E. Oki, T. Takeda,
Status: Standards Track
Date: April 2009
Mailbox: oki at ice.uec.ac.jp,
takeda.tomonori at lab.ntt.co.jp,
adrian at olddog.co.uk
I-D Tag: draft-ietf-pce-pcep-xro-06.txt
The Path Computation Element (PCE) provides functions of path
computation in support of traffic engineering (TE) 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. [STANDARDS TRACK]
This document is a product of the Path Computation Element Working Group of the IETF.
This is now a Proposed Standard Protocol.
STANDARDS TRACK: 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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