Applicability of Stateful Path Computation Element (PCE)

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Last updated 2013-11-26 (latest revision 2013-05-25)
Replaced by draft-ietf-pce-stateful-pce-app
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A stateful Path Computation Element (PCE) maintains information about Label Switched Path (LSP) characteristics and resource usage within a network in order to provide traffic engineering calculations for its associated Path Computation Clients (PCCs). This document describes general considerations for a stateful PCE deployment and examines its applicability and benefits through a number of use cases. Path Computation Element Protocol (PCEP) extensions required for stateful PCE usage are covered in separate documents.


Xian Zhang (
Ina Minei (

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