基于硬件的快速路由查表模块测试系统设计

Efficient Performance Testing System Design of Hardware－Based Fast Routing Table Lookup Module

路由表的快速硬件查询技术已广泛应用于基于第三层交换技术的商业化路由器产品中,其性能目前已成为该类路由器的关键性技术特征之一.文章提出了一种用于快速路由查表硬件模块功能与稳定性测试的DSP硬件测试系统与软件系统设计方案.该方案通过使用优化设计的测试路由表与IP测试向量随机生成技术有效简化了硬件测试电路设计.测试系统主控程序的设计可有效降低ADSP汇编程序调试复杂度.

The performance of hardware－based fast routing table lookup technologies used in various commercial routers has become one of the most important parameters in evaluating the performance of high speed routers based on layer 3 switching technologies．This paper presents an efficient performance testing system design which can effectively perform function testing and stability testing to evaluate the performance of fast routing table lookup module．By using specially constructed testing routing table and randomly generated IP testing vectors,the hardware design of the testing system is simplified greatly．The testing software design effectively facilitates the development and debugging of ADSP assembly program．