Deploying Diffserv at the Network Edge for Tight SLAs, Part 1
IEEE Internet Computing
GMPLS-based service differentiation for scalable QoS support in all-optical Grid applications
Future Generation Computer Systems - Collaborative and learning applications of grid technology
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
A differentiated optical services model for WDM networks
IEEE Communications Magazine
Issues for routing in the optical layer
IEEE Communications Magazine
Service level agreement and provisioning in optical networks
IEEE Communications Magazine
Dynamic multilayer routing schemes in GMPLS-based IP+optical networks
IEEE Communications Magazine
Influence of GMPLS on network providers' operational expenditures: a quantitative study
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
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IP over optical networks controlled by the GMPLS control plane have become the common infrastructure for a variety of services, such as triple play and grid applications. The traffic aggregation requires the services to be differentiated in a multilayer fashion, so as to guarantee higher levels of GoS and QoS to 'gold' traffic. This means that the traditional DiffServ technology needs to be combined with differentiation mechanisms in the optical domain. This paper proposes a framework for multilayer QoS and GoS support in GMPLS based IP/WDM networks. The scheme is based on a multilayer strategy which combines two routing policies that optimize the resource utilization. The system also provides a lightpath differentiation which allows the operator to accommodate sensitive traffic on lightpaths able to guarantee a certain level of transmission quality. The benefits of the scheme are illustrated by a simulation study, discussing blocking probability and resource utilization.