Path Computation Element Communication Protocol
RFC 5440, “Path Computation Element Communication Protocol”, is a Proposed Standard document published in March 2009 by JP. Vasseur, JL. Le Roux. It has since been updated by RFC 7896, RFC 8253, RFC 8356, RFC 9488, RFC 9756. The canonical text is published by the RFC Editor.
Abstract
This document specifies the Path Computation Element (PCE) Communication Protocol (PCEP) for communications between a Path Computation Client (PCC) and a PCE, or between two PCEs. Such interactions include path computation requests and path computation replies as well as notifications of specific states related to the use of a PCE in the context of Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS) Traffic Engineering. PCEP is designed to be flexible and extensible so as to easily allow for the addition of further messages and objects, should further requirements be expressed in the future. [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 5440 is hosted at rfc-editor.org. Available in TXT,HTML.
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