假设校园网通过一台三层交换机连到校园网出口路由器上，路由器再和校园外的另一台路由器链接。现要做适当配置，实现校园网内部主机与校园网外部主机之间的相互通信。为了简化网管的管理维护工作，学校决定采用RIP v2协议实现互通(Assuming that the campus network is connected to the campus network router through a Layer 3 switch, the route