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PCEP Extension for Flow Specification

Document Type Replaced Internet-Draft (individual)
Authors Dhruv Dhody , Adrian Farrel , Zhenbin Li
Last updated 2017-12-29
Replaced by RFC 9168
Stream (None)
Intended RFC status (None)
Expired & archived
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Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-pce-pcep-flowspec
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Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at:


The Path Computation Element (PCE) is a functional component capable of selecting the paths through a traffic engineered network. These paths may be supplied in response to requests for computation, or may be unsolicited directions issued by the PCE to network elements. Both approaches use the PCE Communication Protocol (PCEP) to convey the details of the computed path. Traffic flows may be categorized and described using "Flow Specifications". RFC 5575 defines the Flow Specification and describes how it may be distributed in BGP to allow specific traffic flows to be associated with routes. This document specifies a set of extensions to PCEP to support dissemination of Flow Specifications. This allows a PCE to indicate what traffic should be placed on each path that it is aware of.


Dhruv Dhody
Adrian Farrel
Zhenbin Li

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