Extensions to the Path Computation Element Communication Protocol for Route Exclusions
RFC 5521, “Extensions to the Path Computation Element Communication Protocol for Route Exclusions”, is a Proposed Standard document published in April 2009 by E. Oki, T. Takeda, A. Farrel. The canonical text is published by the RFC Editor.
Abstract
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]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5521 is hosted at rfc-editor.org. Available in TXT,HTML.
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