Extensions to Path Computation Element Communication Protocol (PCEP) for Hierarchical Path Computation Elements (PCE)

The information below is for an old version of the document
Document Type Expired Internet-Draft (pce WG)
Authors Fatai Zhang  , Quintin Zhao  , Oscar de Dios  , Ramon Casellas  , Daniel King 
Last updated 2014-08-18 (latest revision 2014-02-14)
Replaces draft-zhang-pce-hierarchy-extensions
Stream Internet Engineering Task Force (IETF)
Expired & archived
pdf htmlized bibtex
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Hierarchical Path Computation Element (H-PCE) architecture, provides a mechanism to allow the optimum sequence of domains to be selected,and the optimum end-to-end path to be derived through the use of a hierarchical relationship between domains. This document defines the Path Computation Element Protocol (PCEP) extensions for the purpose of implementing Hierarchical PCE procedures which are described in the aforementioned document. These extensions are experimental and published for examination, discussion, implementation, and evaluation.


Fatai Zhang (zhangfatai@huawei.com)
Quintin Zhao (qzhao@huawei.com)
Oscar de Dios (ogondio@tid.es)
Ramon Casellas (ramon.casellas@cttc.es)
Daniel King (daniel@olddog.co.uk)

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