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

Document Type Replaced Internet-Draft (individual)
Authors Fatai Zhang  , Quintin Zhao  , Oscar de Dios  , Ramon Casellas  , Daniel King 
Last updated 2014-01-15 (latest revision 2013-07-14)
Replaced by RFC 8685
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Expired & archived
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IESG IESG state Replaced by draft-ietf-pce-hierarchy-extensions
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This Internet-Draft is no longer active.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, defined in the companion framework document [RFC6805], 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.)