QRP02-3: SAM: A New Bandwidth Constraint Model for Diff-Serv-Aware MPLS Networks

The next generation IP networks will provide differentiated services to the applications. There is a strong need to design new bandwidth constraint (BC) models to meet the new requirements. A desirable BC model takes both bandwidth isolation and bandwidth utilization into account. Conventional BC models have their limits due to their static nature. In this paper, we propose a new BC model, called the self-adaptive bandwidth constraint model (SAM), in which the priorities of different application classes are adaptively updated. The performance of the SAM is compared with three representative conventional BC models. The simulation results suggest that the SAM has certain advantages over others.