Network operators are migrating their networks to IP over WDM architectures. In such multilayer networks, it is necessary to define mechanisms that efficiently use the resources available from both layers in a coordinated manner. Thanks to the development of the control plane (GMPLS), it is feasible to both set up and tear down lightpaths automatically. Thus the WDM layer can now adapt its configuration to both meet a set of resource constraints and fulfill some predefined quality-of-service (QoS) requirements. To this end, we define a multilayer traffic engineering algorithm that efficiently manages the resources from both layers. This algorithm, which is based on Bayesian decision theory, finds the optimal number of label-switched paths that must be switched over the optical and electronic domains. Such an optimal value is found by trading off the QoS required by the users and the limited availability of network resources.
© 2010 Optical Society of America
Original Manuscript: November 25, 2009
Revised Manuscript: May 26, 2010
Manuscript Accepted: June 2, 2010
Published: July 13, 2010
Víctor López, José Alberto Hernández, Óscar González de Dios, Juan Fernández Palacios, and Javier Aracil, "Multilayer Traffic Engineering for IP Over WDM Networks Based on Bayesian Decision Theory," J. Opt. Commun. Netw. 2, 515-529 (2010)