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当前随着网络带宽的不断增加,对路由器转发速度的要求也越来越高。如何进行路由的快速查找目前成为限制报文快速转发的瓶颈,为了解决这一问题比较流行的方式是采用TCAM器件进行路由的快速查找。本文详细介绍了TCAM器件在高速路由查找中的应用及其管理算法,同时重点给出了TCAM器件的FPGA实现。
With the continuous increase of network bandwidth, the requirements for router forwarding speed are also getting higher and higher. How to quickly find routes has become a bottleneck restricting rapid packet forwarding. In order to solve this problem, a more popular way is to use TCAM devices to quickly find routes. This paper introduces the application of TCAM device in high-speed routing lookup and its management algorithm in detail. At the same time, it gives the FPGA implementation of TCAM device.