Multilayer Quality and Grade of Service Support for High Speed GMPLS IP/DWDM Networks

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.

• Type: Conference
• Year: 2007
• Where: NBIS
• Authors: Walter Colitti, Kris Steenhaut, Ann Nowé, Jan Lemeire
• Keywords: Computer Networks, Multilayer Fashion, Multilayer Qos, NBIS 2007, Resource Utilization