RFC 8741

Ability for a Stateful Path Computation Element (PCE) to Request and Obtain Control of a Label Switched Path (LSP), March 2020

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Status:
PROPOSED STANDARD
Authors:
A. Raghuram
A. Goddard
J. Karthik
S. Sivabalan
M. Negi
Stream:
IETF
Source:
pce (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC8741

Discuss this RFC: Send questions or comments to pce@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF


Abstract

A stateful Path Computation Element (PCE) retains information about the placement of Multiprotocol Label Switching (MPLS) Traffic Engineering Label Switched Paths (TE LSPs). When a PCE has stateful control over LSPs, it may send indications to LSP head-ends to modify the attributes (especially the paths) of the LSPs. A Path Computation Client (PCC) that has set up LSPs under local configuration may delegate control of those LSPs to a stateful PCE.

There are use cases in which a stateful PCE may wish to obtain control of locally configured LSPs that it is aware of but have not been delegated to the PCE.

This document describes an extension to the Path Computation Element Communication Protocol (PCEP) to enable a PCE to make requests for such control.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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