操作方法
配置计算机PC1： IP: 192.168.1.2 Submask: 255.255.255.0 Gateway: 192.168.1.1
配置计算机PC2： IP: 192.168.2.2 Submask: 255.255.255.0 Gateway: 192.168.2.1
测试连通性PC1 ping PC2 Ping 192.168.2.2
配置路由器R1 Router>en Router#conf t Router(config)#hostname R1 R1(config)#int fa1/0 R1(config-if)#no shut R1(config-if)# R1(config-if)#ip address 192.168.1.1 255.255.255.0 R1(config-if)#exit R1(config)#int s2/0 R1(config-if)#ip address 192.168.3.1 255.255.255.0 R1(config-if)#clock rate 64000 R1(config-if)#no shut R1(config-if)#end R1# clock rate 64000（必须配置时钟才可通信）
配置路由器R2 R2>en R2#conf t R2(config)#hostname R2 R2(config)#int fa1/0 R2(config-if)#ip address 192.168.2.1 255.255.255.0 R2(config-if)#no shut R2(config-if)# R2(config-if)#exit R2(config)#int s2/0 R2(config-if)#ip address 192.168.3.2 255.255.255.0 R2(config-if)#no shut R2(config-if)# R2(config-if)#clock rate 64000 This command applies only to DCE interfaces R2(config-if)# R2(config-if)#end R2#
配置R1路由： R1>en R1#conf t R1(config)#ip route 192.168.2.0 255.255.255.0 192.168.3.2 R1(config)#end R1# R1#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route Gateway of last resort is not set C 192.168.1.0/24 is directly connected, FastEthernet1/0 S 192.168.2.0/24 [1/0] via 192.168.3.2 C 192.168.3.0/24 is directly connected, Serial2/0 R1#
配置路由R2 R2>en R2#conf t Enter configuration commands, one per line. End with CNTL/Z. R2(config)#ip route 192.168.1.0 255.255.255.0 192.168.3.1 R2(config)#end R2# R2#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ODR P - periodic downloaded static route Gateway of last resort is not set S 192.168.1.0/24 [1/0] via 192.168.3.1 C 192.168.2.0/24 is directly connected, FastEthernet1/0 C 192.168.3.0/24 is directly connected, Serial2/0
测试连通性：PC1 Ping PC2 Ping 192.168.2.2