Extensions to Path Computation Element Protocol (PCEP) to Support Resource Sharing-based Path Computation

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual)
Last updated 2019-08-17 (latest revision 2019-02-13)
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Resource sharing in a network means two or more Label Switched Paths (LSPs) use common piece(s) of resource along their paths. This can help save network resource and is useful in scenarios such as LSP recovery or when two LSPs do not need to be active at the same time. A Path Computation Element (PCE) is responsible for path computation with such requirement. The resource-sharing-based path computation with better efficiency can be achieved together with the association object in PCEP. This document extends the Path Computation Element Protocol (PCEP) in order to support resource sharing-based path computation, which is a special case in the association path computation.


Xian Zhang (zhang.xian@huawei.com)
Haomian Zheng (zhenghaomian@huawei.com)
Oscar de Dios (oscar.gonzalezdedios@telefonica.com)
Victor Lopez (victor.lopezalvarez@telefonica.com)

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