路由交换机转发IP包时，需要查找路由表获得转发路径。网络上实现此功能比较费时，尤其在一个比较大的网络中进行路由交换时，路由查找表会相当庞大。为了解决这个问题，可采用高速地址缓存加快路由查找过程。其基本思路是第一次IP包的路由确定后，以后的包直接转发。在具体实 When the routing switch forwards the IP packet, it needs to find the routing table to obtain the forwarding path. The realization of this function on the network is time-consuming, especially in a relatively large network routing exchange, the routing lookup table can be quite large. In order to solve this problem, high-speed address cache can be used to speed up the routing lookup process. The basic idea is that after the first IP packet routing is determined, the subsequent packets are forwarded directly. In concrete