Internet-Draft draft-ietf-pce-state-sync-08.txt is now available. It is a work
item of the Path Computation Element (PCE) WG of the IETF.
Title: Procedures for Communication between Stateful Path Computation
Elements
Authors: Stephane Litkowski
Siva Sivabalan
Cheng Li
Haomian Zheng
Name: draft-ietf-pce-state-sync-08.txt
Pages: 35
Dates: 2024-09-18
Abstract:
The Path Computation Element (PCE) Communication Protocol (PCEP)
provides mechanisms for PCEs to perform path computation in response
to a Path Computation Client (PCC) request. The Stateful PCE
extensions allow stateful control of Multi-Protocol Label Switching
(MPLS) Traffic Engineering (TE) Label Switched Paths (LSPs) using
PCEP.
A Path Computation Client (PCC) can synchronize LSP state information
to a Stateful Path Computation Element (PCE). A PCC can have
multiple PCEP sessions towards multiple PCEs. There are some use
cases, where an inter-PCE stateful communication can bring additional
resiliency in the design, for instance when some PCC-PCE session
fails.
This document describes the procedures to allow stateful
communication between PCEs for various use-cases and also the
procedures to prevent computations loops.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-state-sync/
There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-pce-state-sync-08.html
A diff from the previous version is available at:
https://author-tools.ietf.org/iddiff?url2=draft-ietf-pce-state-sync-08
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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