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PCEP Extensions for Temporary Reservation of Computed Path Resources and Support for Limited Context State in PCE
draft-gonzalezdedios-pce-resv-res-context-state-00

Document Type Replaced Internet-Draft (individual)
Authors Oscar Gonzalez de Dios , Francisco Javier Jimenez Chico , Ramon Casellas
Last updated 2010-10-18 (Latest revision 2010-10-15)
Replaced by draft-gonzalezdedios-pce-reservation-state
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at:
https://www.ietf.org/archive/id/draft-gonzalezdedios-pce-resv-res-context-state-00.txt

Abstract

The Path Computation Element (PCE) provides path computation functions in support of traffic engineering in Multi-Protocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks. A limited form of statefulness is useful to improve PCE functionality in situations in which the local TED might not be up to date, or in the case of concurrent requests where most of the LSPs are computed before the end of the set-up of the LSPs when the TED is updated. The PCE can retain some context from the resources assigned to Path Requests during a certain period of time, so that it avoids suggesting the use of the same resources for subsequent TE LSPs. This document proposes an extension to the PCEP protocol to allow the PCC to request the PCE to block or reserve the resources computed in a path request of a TE LSP for subsequent requests for a certain time.

Authors

Oscar Gonzalez de Dios
Francisco Javier Jimenez Chico
Ramon Casellas

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