出版社：University of Malaya * Faculty of Computer Science and Information Technology
摘要：An important aspect of traffic engineering is the reoptimization of network resources. In this process, traffic over a congested path is rerouted to a new path to improve efficiency in network resource utilization. The aggregation nature of DiffServ MPLS networks often gives rise to longlived flows within the network. A rerouting mechanism that supports the tearingdown of old connections and the settingup of new connections is essential. In the absence of a rerouting mechanism, longlived flows will be tied to inefficient paths for an extended period of time. A simple nonshortest path rerouting algorithm, namely SimpleReroute (SRR), is proposed. The simulation results indicate that SRR exhibits a lower packet loss ratio. SRR is able to reduce packet loss up to about 15 orders of magnitude, i.e. reducing the packet loss percentage from as high as 14.9% to 1% when the network is heavily congested.
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