支持QoS的异构并行交换结构研究

不同类型的交换结构具有不同的交换性能。为此，提出一种支持QoS的异构并行交换结构(HPSA)，该结构支持3种类型的业务：保障带宽(GB)业务，保障时延(GD)业务和保障丢包(GL)业务。各业务通过HPSA的不同类型平面被交换，从而实现对各类业务的QoS支持。仿真结果表明，HPSA中的GB业务带宽性能、GD业务时延性能及GL业务丢包率性能，均优于它们在基于iSLIP算法的IQ交换结构和基本PPS结构中的性能。

Research on Heterogeneous Parallel Switch Architecture Supporting QoS

Based on the idea that different kinds of switches have different kinds of performance, this paper proposes a kind of Heterogeneous Parallel Switch Architecture（HPSA）. Three kinds of traffic classes are supported, which are Guaranteed Bandwidth（GB） traffic, Guaranteed Delay（GD） traffic, and Guaranteed Lost（GL） traffic. The Quality of Service（QoS） of each traffic class is realized by switching different traffic classes using different kinds of central planes. Simulation results show the GB traffic bandwidth, GD traffic delay performance, and GL traffic lost rate of HPSA are all better than that ofiSLIP IQ and basic PPS.