QoS Aware Data-Path Routing in DWDM/GMPLS Network

Abstract

Quality of Service Routing is at present an active and remarkable research area,since most emerging network services require specialized Quality of Service (QoS) functionalities that cannot be provided by the current QoS-unaware routing protocols.w-a-days QoS based data routing is a demanding factor for telecommunication clients.In order to provide better QoS, the service provider network needs to have dynamic light-path provisioning technique. This technique can help to change the quality of the light-path dynamically based on existing traffic load and clients QoS requirements, which can be solved by properly designing Generalized Multi-Protocol Label Switch- ing (GMPLS) capable hybrid network. This network is the combination of physical layer as well as network layer information. In optical networks, physical layer impair- ments (PLIs) incurred by non-ideal optical transmission media, accumulates along the optical path. The overall effect of PLIs determines the feasibility of the light-paths. nce it is impo rtant to understand the process that provide PLI information to the control plane protocols and use this information efficiently to compute feasible routes and wavelengths. Thus, a successful and wide deployment of the most novel network services demands that we thoroughly understand the essence of QoS Routing dynamics, and also that the proposed solutions to this complex problem should be indeed feasible and affordable.