Internet-Draft draft-ietf-pce-multipath-19.txt is now available. It is a work
item of the Path Computation Element (PCE) WG of the IETF.
Title: Path Computation Element Communication Protocol (PCEP) Extensions
for Signaling Multipath Information
Authors: Mike Koldychev
Siva Sivabalan
Tarek Saad
Vishnu Pavan Beeram
Hooman Bidgoli
Shuping Peng
Samuel Sidor
Name: draft-ietf-pce-multipath-19.txt
Pages: 29
Dates: 2026-02-02
Abstract:
Certain traffic engineering path computation problems require
solutions that consist of multiple traffic paths that together form a
solution. However, current PCEP extensions can only return a single
traffic path, which cannot meet the requirements. This document
defines mechanisms to encode multiple paths for a single set of
objectives and constraints. This allows encoding of multiple Segment
Lists per Candidate Path within a Segment Routing Policy. The new
Path Computation Element Communication Protocol (PCEP) mechanisms are
designed to be generic, which allows for future re-use outside of SR
Policy. The new PCEP mechanisms are applicable to both stateless and
stateful PCEP. Additionally, this document updates RFC 8231 and RFC
8281 to allow encoding of multiple Segment Lists in PCEP.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-multipath/
There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-pce-multipath-19.html
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-pce-multipath-19
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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