1·The border gateway protocol(BGP) is a policy-based, event-driven path vector routing protocol.
关 协议（BGP）是一种基于策略的、事件驱动的路径向量协议。
2·Border Gateway Protocol (BGP) is a key component of Internet backbone, and plays a very important role.
边际网关路由协议是因特网骨干线路的关键组成部分之一。
3·Another important routing protocol type is path-vector routing protocol, such as the Border Gateway Protocol (BGP).
网络中另一大类 路由协议是 路 径向量 路由协议，如边界网关协议（BGP）。
4·When a communication path changes, nearby routers inform their neighbours through a system known as the border gateway protocol (BGP).
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。