Internet-Draft draft-ietf-pce-sid-algo-18.txt is now available. It is a work
item of the Path Computation Element (PCE) WG of the IETF.
Title: Carrying SR-Algorithm in Path Computation Element Communication
Protocol (PCEP).
Authors: Samuel Sidor
Zoey Rose
Shaofu Peng
Shuping Peng
Andrew Stone
Name: draft-ietf-pce-sid-algo-18.txt
Pages: 28
Dates: 2025-05-14
Abstract:
This document specifies extensions to the Path Computation Element
Communication Protocol (PCEP) to enhance support for Segment Routing
(SR) with a focus on the use of Segment Identifiers (SIDs) and SR-
Algorithms in Traffic Engineering (TE). The SR-Algorithm associated
with a SID defines the path computation algorithm used by Interior
Gateway Protocols (IGPs). This document proposes an approach for
informing PCEP peers about the SR-Algorithm associated with each SID
used, as well as signaling a specific SR-Algorithm as a constraint to
the Path Computation Element (PCE). The mechanisms for specifying an
SR-Algorithm constraint allow for refined path computations that meet
specific operational needs, such as low-latency or high-bandwidth
paths based primarily on operator-defined criteria using Flexible
Algorithms. Additionally, this document updates RFC 8664 and RFC
9603 to allow encoding of SR-Algorithm of specific SID in Explicit
Route Object (ERO) subobjects.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-sid-algo/
There is also an HTMLized version available at:
https://datatracker.ietf.org/doc/html/draft-ietf-pce-sid-algo-18
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-pce-sid-algo-18
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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