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Published in: Journal of Network and Systems Management 3/2014

01-07-2014

Implementation and Assessment of Pre-reservation Mechanism for PCE Environments

Authors: Marta Cuaresma Saturio, Víctor López, Óscar González de Dios, Fernando Muñoz del Nuevo, Juan Pedro Fernández-Palacios

Published in: Journal of Network and Systems Management | Issue 3/2014

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Abstract

Path computation element (PCE) architecture has been defined for different scenarios such as multi-layer and multi-domain. PCE computes the routes based on the information in the traffic engineering database (TED). TED is updated with the control plane information. However, resource status in the network elements may differ from the information in the TED, because there is a delay from the network element reserves a resource, until the TED is updated. Therefore, PCE can reply with resources, which are busy leading to extra blocking. Pre-reservation mechanism eliminates this blocking, because PCE can book the computed path resources for a certain period as if they were busy. This work demonstrates the importance of this mechanism in two scenarios: multiple PCEs architecture and massive restoration. To do so, we have implemented and tested on a real control plane set-up three schemes to operate with multiple PCEs in a single domain and a massive restoration scenario.

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Metadata
Title
Implementation and Assessment of Pre-reservation Mechanism for PCE Environments
Authors
Marta Cuaresma Saturio
Víctor López
Óscar González de Dios
Fernando Muñoz del Nuevo
Juan Pedro Fernández-Palacios
Publication date
01-07-2014
Publisher
Springer US
Published in
Journal of Network and Systems Management / Issue 3/2014
Print ISSN: 1064-7570
Electronic ISSN: 1573-7705
DOI
https://doi.org/10.1007/s10922-013-9296-y

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