[Pce] I-D Action: draft-ietf-pce-state-sync-02.txt
internet-drafts@ietf.org Fri, 22 April 2022 02:53 UTC
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Subject: [Pce] I-D Action: draft-ietf-pce-state-sync-02.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Path Computation Element WG of the IETF. Title : Inter Stateful Path Computation Element (PCE) Communication Procedures. Authors : Stephane Litkowski Siva Sivabalan Cheng Li Haomian Zheng Filename : draft-ietf-pce-state-sync-02.txt Pages : 32 Date : 2022-04-21 Abstract: The Path Computation Element Communication Protocol (PCEP) provides mechanisms for Path Computation Elements (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 an 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 a stateful communication between PCEs for various use-cases and also the procedures to prevent computations loops. The IETF datatracker status page for this 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-02.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-pce-state-sync-02 Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts
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