对QoS支持的IP分组聚合分离加SAR处理  

Merge and Separate Plus SAR IP Packets Processing Method with QoS Support

作　　者：刘晓冬 邬江兴 郭云飞 朱圣平 

机构地区：[1]国家数字程控交换工程技术研究开发中心,河南郑州450002

出　　处：《计算机应用研究》2005年第6期209-212,共4页Application Research of Computers

基　　金：国家"863"计划资助项目(2001AA124011)

摘　　要：目前流行的对具有变长分布的IP分组,在非ATM网络节点中的处理方案,是采用类似于分段重组(SAR)的方法。分析指出了这种处理带宽利用率低的方案,不适合于高速网络节点的实现。为了提高节点的处理带宽利用率,提出了一种新的定长处理方案,即聚合分离加SAR(MAS+)方案。在此新方案中,具有相同输入/输出口地址,且小于1500字节的分组被聚合在一起,大于1500字节的分组被分段,也给出了有关性能改进和延迟的分析和计算机模拟。The popular solution toward variable-length-distribution IP packets in the non-ATM network node, uses a method similar to Segmentation And Reassembly (SAR). In this paper, it is analyzed and pointed out that the low-bandwidth-usage method is not suitable for high speed network node realization. To improve processing-bandwidth usage, a new fixed-size processing method, Merge And Separate plus SAR (MAS+), is presented. In this new method, the packets with same input and output port addresses, smaller than 1 500 bytes are merged, and the packets larger than 1 500 bytes are segmented. And, the analysis and computer simulations of improvement and latency are also given.

关 键 词：高速网络节点 定长处理 分段重组(SAR) 延迟 服务质量(QoS) 

分 类 号：TN915.05[电子电信—通信与信息系统]