动态路由——OSPF路由协议。包括OSPF单区域基本配置、OSPF多区域基本配置、OSPF虚链路配置、配置OSPF的域间路由汇总的详细步骤。-Dynamic routing- OSPF routing protocols. Including a single area OSPF basic configuration, OSPF multi-regional basic configuration, OSPF virtual link configuration, configure OSP