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Títol: Prediction-based routing as RWA in multilayer traffic engineering
Autor: Puype, Bart
Marín Tordera, Eva
Colle, D.
Sánchez López, Sergio
Pickavet, Mario
Masip Bruin, Xavier
Demeester, Piet
Altres autors/autores: Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. ANA - Grup d'Arquitectures Avançades de Xarxes
Matèries: Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors
Traffic engineering
Routing (Computer network management)
Multilayer traffic engineering
Prediction-based routing
Ordinadors, xarxes d'
Tipus de document: Article
Descripció: Multilayer traffic engineering (MLTE) allows coping with ever-increasing and varying traffic demands in IP-over-Optical multilayer networks. It utilizes cross-layer TE (Traffic Engineering) techniques to provision optical lightpath capacity to the IP/MPLS (Internet Protocol/ Multi-Protocol Label Switching) logical topology on-demand. Such provisioning however causes optical connection arrival rates that pose strong performance requirements to Routing and Wavelength Assignment (RWA) strategies. Collecting up-to-date network information for the RWA with rapidly changing network states can be quite difficult. Exposing optical layer state information to the IP layer in the overlay model, or transforming this optical layer information in a workable representation in an integrated control plane is similarly problematic. Prediction-Based Routing (PBR) has been proposedas a RWA mechanism for optical transport networks; it bases routing not on possibly inaccurate or outdated network state, but instead on previous connections set-up. In this article, we propose to implement PBR as the RWA mechanism in the optical layer of a multilayer network, and use the predictive capabilities of PBR to expose dynamic optical network information into the multilayer traffic engineering algorithm with minimal control plane overhead. Some simulations show the benefits of using the PBR in the optical layer for MLTE purposes.
Postprint (published version)
Altres identificadors i accés: Puype, B. [et al.]. Prediction-based routing as RWA in multilayer traffic engineering. "Photonic network communications", Abril 2012, vol. 23, núm. 2, p. 172-182.
Disponible al dipòsit:E-prints UPC

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