Differentiated Service (DiffServ) is a scalable solution to provide class-based differentiated Quality of Services (QoS). However, the basic DiffServ model lacks mechanisms to reserve resource for the class-based traffic and perform per-flow admission control. In this paper, we propose an end-to-end QoS provisioning architecture in IPv6 networks supported by a QoS-aware path selection algorithm. We design a novel flow label mechanism to achieve the effect of per-flow reservation paradigm and keep the scalability of DiffServ. In addition, the proposed QoS-aware path selection algorithm can optimize multiple QoS objectives simultaneously by exploiting genetic algorithm technique in conjunction with concept of Pareto dominance. The simulation results demonstrate the efficiency and scalability of the proposed architecture and algorithm.
展开▼
