每个路由器的路由表显示了到达目的地址的最佳路径，对于要有几跳的地址，它显示出最佳的下一跳路由器。
Each router's routing table shows the best route to the destination address; for addresses that may be several hops away, it shows the best next-hop router.
这些路由器依次将之告诉其邻近的路由器，最终新路径的信息传播至整个互联网。
These routers inform other neighbours in turn, eventually spreading knowledge of the new path throughout the internet.
当通信路径改变，附近的路由器会通过一个名为边界网关协议(border gateway protocol, bgp)的系统告知邻近的路由器。
When a communication path changes, nearby routers inform their neighbours through a system known as the border gateway protocol (BGP).
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