中文摘要：

分析了一种缓冲交叉开关交换结构在突发流量到达下的性能．通过建立分析模型，给出了每个输入端口拥有单个或多个输入队列的缓冲交叉开关结构的饱和吞吐．结果显示，对于单输入队列结构而言，随着突发平均长度的增加，饱和吞吐迅速从1下降，并收敛于0．5髓着每个输入端口输入队列数目的增加，饱和吞吐率逐渐接近1．仿真实验验证了分析模型的准确性．该结果可以用于指导基于缓冲交叉开关的路由交换设备的优化设计．

英文摘要：

This paper analyzes the performance of a buffered crossbar switch under bursty traffic. It derives the saturated throughput for a buffered crossbar switch with multiple queues at each input port by the proposed analytic model. The saturation throughput sharply decreases from 1 and converges to 0.5 with the increasing of average burst length, and it approaches 1 as the number of queues per input increases. The accuracy of the theoretic analysis is also investigated by extensive simulation. Results from this paper can be used as a guidance to design optimal buffered crossbar switches.