第一步 配置OSPF保证路由器直接网络连通性R1配置如下:[R1]dhcp enable Info: The operation may take a few seconds. Please wait for a moment.done.[R1]interface g0/0/2[R1-GigabitEthernet0/0/2]ip address 192.168.1.254 24[R1-GigabitEthernet0/0/2]dhcp select interface [R1]interface g0/0/0[R1...