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PCEP Procedures and Protocol Extensions for Using PCE as a Central Controller (PCECC) for P2MP LSPs

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
Authors Zhenbin Li , Shuping Peng , Xuesong Geng , Mahendra Singh Negi
Last updated 2021-08-25 (Latest revision 2021-02-21)
RFC stream (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The Path Computation Element (PCE) is a core component of Software- Defined Networking (SDN) systems. It can compute optimal paths for traffic across a network and can also update the paths to reflect changes in the network or traffic demands. The PCE has been identified as an appropriate technology for the determination of the paths of point-to-multipoint (P2MP) TE Label Switched Paths (LSPs). PCE was developed to derive paths for MPLS P2MP LSPs, which are supplied to the head end (root) of the LSP using PCEP. PCEP has been proposed as a control protocol to allow the PCE to be fully enabled as a central controller. A PCE-based Central Controller (PCECC) can simplify the processing of a distributed control plane by blending it with elements of SDN and without necessarily completely replacing it. Thus, the P2MP LSP can be calculated/set up/initiated and the label forwarding entries can also be downloaded through a centralized PCE server to each network device along the P2MP path, while leveraging the existing PCE technologies as much as possible. This document specifies the procedures and PCEP extensions for using the PCE as the central controller for P2MP TE LSP by provisioning labels along the path of the static P2MP LSP.


Zhenbin Li
Shuping Peng
Xuesong Geng
Mahendra Singh Negi

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