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在对现有并行分组交换(PPS)分析的基础上,将标识的概念引入交换结构,提出了一种基于标识支持区分服务质量(QoS)的PPS调度机制.该机制以业务类为单位管理网络数据流,采用按序排队的思想解决保序问题,在汇聚模块设置少量缓存,采用双指针轮询算法实现区分QoS保障,保证了交换对高层不同业务类的有效支持.仿真实验结果表明,该机制在满负载情况下可获得高达99%以上的吞吐率,在过载情况下根据预定带宽分配输出链路带宽,确保分组具有时延的上界,能够比较均衡地将负载分配到各中间交换平面.
Based on the analysis of the existing parallel packet switched (PPS), the concept of identity is introduced into the switching fabric, and a PPS scheduling mechanism based on identity support to distinguish quality of service (QoS) is proposed. The mechanism manages the network Data flow, using the idea of orderly queuing to solve the problem of ordering, set a small amount of cache in the aggregation module, using double pointer polling algorithm to achieve QoS guarantee, to ensure effective exchange of high-level different business classes.Experimental results show that the The mechanism achieves a throughput of more than 99% at full load, divides the output link bandwidth according to a predetermined bandwidth under overload conditions, ensures that the packet has an upper bound of the delay, and distributes the load to each intermediate switching plane more evenly .