Multilayer Traffic Engineering for IP Over WDM Networks Based on Bayesian Decision Theory Articles uri icon

publication date

  • August 2010

start page

  • 515

end page

  • 519


  • 2


  • 8

International Standard Serial Number (ISSN)

  • 1943-0620


  • 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.