IP over WDM networks are a promising candidate for the next generation optical Internet networks. A new traffic-engineering (TE) scheme is proposed in this paper with the objective to route subwavelength connection requests with QoS constraints. In particular, we consider the routing of high-priority connections characterized by stringent requirements in term of delay and packet-loss ratio, by translating them into constraints at the physical layer. Furthermore, in order to provide efficient service differentiation, the impact of a suboptimal preemption algorithm is analyzed through extensive simulation experiments considering both the blocking probability and the network disruption, while comparing it with an optimal mechanism proposed in literature.
Quality of service in IP over WDM: Considering both service differentiation and transmission quality
Salvadori E.;
2004-01-01
Abstract
IP over WDM networks are a promising candidate for the next generation optical Internet networks. A new traffic-engineering (TE) scheme is proposed in this paper with the objective to route subwavelength connection requests with QoS constraints. In particular, we consider the routing of high-priority connections characterized by stringent requirements in term of delay and packet-loss ratio, by translating them into constraints at the physical layer. Furthermore, in order to provide efficient service differentiation, the impact of a suboptimal preemption algorithm is analyzed through extensive simulation experiments considering both the blocking probability and the network disruption, while comparing it with an optimal mechanism proposed in literature.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
