Path Computation Element communication Protocol extension for signaling LSP diversity constraint

The information below is for an old version of the document
Document Type None Internet-Draft (pce WG)
Last updated 2018-02-27
Replaces draft-dhody-pce-of-diverse, draft-litkowski-pce-association-diversity
Stream IETF
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document introduces a simple mechanism to associate a group of Label Switched Paths (LSPs) via an extension to the Path Computation Element Communication Protocol (PCEP) with the purpose of computing diverse paths for those LSPs. The proposed extension allows a PCC to advertise to a PCE the belonging of a particular LSP to a disjoint- group, thus the PCE knows that LSPs in the same group must be disjoint from each other.


Stephane Litkowski (
Siva Sivabalan (
Colby Barth (
Dhruv Dhody (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)