一种支持TCAM规则更新与压缩方法

发布时间：2018-07-10 06:45

本文选题：网络协议 + OpenFlow　；参考：《湖南大学学报(自然科学版)》2014年08期

【摘要】：提出了一种TCAM空间划分和规则压缩相结合的方法,使得OpenFlow网络在支持实时更新的同时能采用小容量的TCAM芯片来存储网络中的规则.所提方法将TCAM芯片空间划分为实时更新区和压缩存储区,实时更新区处在TCAM芯片的前部,用于存放中央控制器发送过来的实时更新规则.后台服务器以一定的时间周期将TCAM芯片中的实时更新区的规则以及压缩存储区中的规则进行压缩,并将压缩后的规则存入TCAM的压缩区,保持实时更新区具有空间接收实时更新规则.分析了区间划分的比率问题,并利用ClassBench工具产生原始规则集进行了仿真实验,实验结果验证了本文方法的有效性.
[Abstract]:In this paper, a method of combining TCAM space partition with rule compression is proposed, which enables OpenFlow network to store the rules in the network by using a small TCAM chip while supporting real-time updating. The proposed method divides the TCAM chip space into real-time updating area and compressed storage area. The real-time updating area is located in the front of the TCAM chip and is used to store the real-time updating rules transmitted from the central controller. The background server compresses the rules of the real-time update area and the compressed storage area in TCAM chip with a certain time cycle, and stores the compressed rules in the compressed area of TCAM. Keeping the real-time update area has space-receiving real-time update rules. The ratio problem of interval partition is analyzed and the simulation experiment is carried out using ClassBench tool to generate the original rule set. The experimental results show that the proposed method is effective.
【作者单位】：国家超级计算长沙中心;湖南大学信息科学与工程学院;
【基金】：国家科技支撑计划资助项目(2012BAH09B02) 长沙市重点科技计划资助项目(K1204006-11-1)
【分类号】：TP333

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