R2(config)#int f0/0
R2(config-if)#ip address 192.168.2.1 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#int s2/0
R2(config-if)#clock rate 64000 //s口連接時DCE端口須配clock rate。
R2(config-if)#exit
R2(config)#interface s3/0
R2(config-if)#ip address 192.168.5.1 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#ip route 192.168.1.0 255.255.255.0 192.168.4.0
R2(config)#ip route 192.168.3.0 255.255.255.0 192.168.5.0
R2(config)#end
R2#write
R3的配置
Router>en
Router#conf t
Router(config)#int s2/0
Router(config-if)#ip address 192.168.5.2 255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#int f0/0
Router(config-if)#ip address 192.168.3.1 255.255.255.0
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#hostname R3
R3(config)#ip route 192.168.1.0 255.255.255.0 192.168.5.0
R3(config)#ip route 192.168.2.0 255.255.255.0 192.168.5.0
R3(config)#ip route 192.168.4.0 255.255.255.0 192.168.5.0
R3(config)#end
R3#write