一种基于输入排队的并行交换结构

A Parallel Switch Architecture Based on Input Queued

并行交换结构能够将多个G比特级的交换结构组建成T比特级(甚至更高级)的交换系统,从而极大提升网络设备的交换能力.本文基于输入排队提出一种只需要低速率缓存和支持包保序的新型并行交换结构VOIQ-PSA,对该交换结构的稳定性进行了理论分析,并通过仿真实验将VOIQ-PSA与目前已提出的其它并行交换结构在时延性能方面进行比较.实验结果表明,VOIQ-PSA交换结构的时延性能优于其它并行交换结构,并且非常适合高速网络环境。

Parallel switches can highly improve the switching capability of network equipments by building a Terabit （or higher） switching system from many gigabit switching fabrics. A parallel switch architecture based on input queued, named VOIQ-PSA, is proposed in this paper for lowing speed requirements of buffer and maintaining packets order, The stability of VOIQ-PSA is analyzed. We also compare the delay performance between VOIQ-PSA and other well-known parallel switches in simulation experiments. The simulation results show that VOIQ-PSA has better delay performance than others and thus it is very suitable for high-speed networking environment.