Title:
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Prediction-based routing as RWA in multilayer traffic engineering
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Author:
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Puype, Bart; Marín Tordera, Eva; Colle, D.; Sánchez López, Sergio; Pickavet, Mario; Masip Bruin, Xavier; Demeester, Piet
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. ANA - Grup d'Arquitectures Avançades de Xarxes |
Abstract:
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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has been proposedas a RWA mechanism for optical transport networks; it bases routing not on possibly inaccurate or outdated network state, but instead on previous connections set-up.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. |
Subject(s):
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-Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors -Traffic engineering -Routing (Computer network management) -Multilayer traffic engineering -RWA -Prediction-based routing -OTN -ASON -Ordinadors, xarxes d' |
Rights:
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Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Article - Published version Article |
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