摘要
目前高性能路由器的查找方案采用基于三重内容可寻址存储器(TCAM)的硬件查找。路由查找的最长前缀匹配要求使得TCAM的表项更新复杂。该文针对当前转发表管理方案在带突发情况下的不足,提出一种基于TCAM二级转发表管理方案,并对该方案进行了计算机仿真研究,仿真结果表明该方案在突发的情况下仍能保证转发系统稳定工作。
High performance routers presently take the measure of hardware methods based on TCAM to realize high speed routing lookups.But the longest prefix matching complicates the updates of TCAM.This paper proposes a two stage forwarding tables managing method,to improve the poor performance of present method when updates come burstily,and researches the performance of the method through simulation.Simulation results prove that the method keep the forwarding system stable in burstiness.
出处
《计算机工程》
CAS
CSCD
北大核心
2008年第8期126-127,131,共3页
Computer Engineering
基金
国家“863”计划基金资助项目“大规模接入汇聚路由器(ACR)系统性能与关键技术研究”(2004AA103130)
