Path Computation Element Communication Protocol Extensions for Stateful PCE
RFC 8231, “Path Computation Element Communication Protocol Extensions for Stateful PCE”, is a Proposed Standard document published in September 2017 by E. Crabbe, I. Minei, J. Medved, R. Varga. It has since been updated by RFC 8786, RFC 9353, RFC 9753, RFC 9756, RFC 9862. The canonical text is published by the RFC Editor.
Abstract
The Path Computation Element Communication Protocol (PCEP) provides mechanisms for Path Computation Elements (PCEs) to perform path computations in response to Path Computation Client (PCC) requests.
Although PCEP explicitly makes no assumptions regarding the information available to the PCE, it also makes no provisions for PCE control of timing and sequence of path computations within and across PCEP sessions. This document describes a set of extensions to PCEP to enable stateful control of MPLS-TE and GMPLS Label Switched Paths (LSPs) via PCEP.
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 8231 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 8230 Using RSA Algorithms with CBOR Object Signing and Encryption Messages
- RFC 8232 Optimizations of Label Switched Path State Synchronization Procedures for a Stateful PCE
- RFC 8229 TCP Encapsulation of IKE and IPsec Packets
- RFC 8233 Extensions to the Path Computation Element Communication Protocol to Compute Service-Aware Label Switched Paths
- RFC 8228 Guidance on Designing Label Generation Rulesets Supporting Variant Labels
- RFC 8234 Updates to MPLS Transport Profile Linear Protection in Automatic Protection Switching Mode
- RFC 8227 MPLS-TP Shared-Ring Protection Mechanism for Ring Topology
- RFC 8235 Schnorr Non-interactive Zero-Knowledge Proof