单项选择题
A.仅Router1#模式下 B.Router1>或Router11#模式下 C.Router1(config)#模式下 D.Router1(config-if)#模式下
A.ip route 192.168.2.0 255.255.255.0 192.168.1.1 B.ip route 192.168.2.0 255.255.255.128 192.168.1.2 C.ip route 192.168.1.0 255.255.255.0 192.168.1.1 D.ip route 192.168.2.128 255.255.255.128 192.168.1.2