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Multilayer Quality and Grade of Service Support for High Speed GMPLS IP/DWDM Networks Host Publication: Network-Based Information Systems Authors: W. Colitti, K. Steenhaut, A. Nowé and J. Lemeire Publisher: Springer Netherlands Publication Date: Aug. 2007 Number of Pages: 9 ISBN: 978-3-540-74572-3
Abstract: IP over optical networks have become the common infrastructure for a variety of services, such as triple play and grid applications. Even though the Generalized Multi Protocol Label Switching (GMPLS) automatic control plane has significantly increased the network flexibility, service differentiation is considered to be important not only in the IP layer but also in the optical domain. This paper proposes and analyzes a framework for multilayer Quality of Service (QoS) and Grade of Service (GoS) support in GMPLS based IP/WDM networks. The scheme is based on a multilayer strategy which combines two routing policies in order to optimize the resource utilization. In addition, the system provides a lightpaths differentiation which allows the operator to accommodate sensitive traffic on lightpaths able to guarantee a certain level of QoS. The benefits of the scheme are illustrated by a simulation study, discussing blocking probability and resource utilization.
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