快速路由器的路由查找和流分类算法研究

Research on IP Route Lookup and Packet Classification Algorithms for High Speed Router

分析了路由器的体系结构发展,研究了路由查找算法和流分类算法在快速路由器中的应用。研究表明,基于分段压缩的路由查找算法支持IPv6路由查找,具有合理的存储容量和快速的查找时间;采用按值分支树的多维综合流分类算法支持前缀和范围匹配,可扩展性强,适合大容量规则数据库。两种算法适合在快速路由器中应用。

The development of router architecture is analyzed, and the fast route lookup and packet classification algorithms for high speed router are researched. The research shows the lookup algorithm for IPv6 route lookup with compression trie has reasonable memory space and fast lookup time. The compositive multi-dimensional packet classification algorithm based on tree divided by value is scalable. It can deal with prefixes match and range match for large rule sets. Two algorithms are suitable for high speed router.