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计算机工程 ›› 2007, Vol. 33 ›› Issue (06): 167-169. doi: 10.3969/j.issn.1000-3428.2007.06.059

• 网络与通信 • 上一篇    下一篇

基于网络处理器的高速包分类机制设计

严冬冬,赵荣彩,褚 睿   

  1. (解放军信息工程大学信息工程学院,郑州 450002)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-03-20 发布日期:2007-03-20

Design of Fast Packet Classification Mechanism Based on Network Processor

YAN Dongdong, ZHAO Rongcai, CHU Rui   

  1. (Institute of Information Engineering, PLA Information Engineering University, Zhengzhou 450002)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-03-20 Published:2007-03-20

摘要: 三元按内容寻址寄存器(TCAM)是内容寻址存储器(CAM)的一种变形,较CAM而言可以使查找更加灵活,对其工作(如包处理)效率的提高也起着极大的优化作用。文章从TCAM的原理及结构特点出发,阐述了其适用于提高NP性能的原因,通过一个设计实例说明了采用TCAM协处理器在网络处理器中加速包处理过程的方法和技术。

关键词: 包分类, TCAM协处理器, 网络处理器

Abstract: TCAM, which is more flexible in looking up, is a subcategory of CAM. It is evidently effective in optimizing packet-processing performance. This paper illustrates the mechanism and structure of TCAM, explains why it is predominant in NP performance optimization. An application design is given to show a method and technology in which TCAM co-processor is used to accelerate packet processing efficiency.

Key words: Packet classification, TCAM co-processor, Network processor (NP)

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