拓扑图
如图所示，使用ospf路由协议来实现全网互通
先为路由器的各个端口配置ip地址
router 1的配置
Router>enRouter#conf tRouter(config)#hostname Router1Router1(config)#int l0Router1(config-if)#Router1(config-if)#ip addr 1.1.1.1 255.255.255.0Router1(config-if)#no shuRouter1(config-if)#exitRouter1(config)#int s0/3/0Router1(config-if)#ip addr 192.168.1.1 255.255.255.0Router1(config-if)#no shu
router 2的配置
Router>enRouter#conf tRouter(config)#hostname Router2Router2(config)#int l0Router2(config-if)#ip addr 2.2.2.2 255.255.255.0Router2(config-if)#no shuRouter2(config-if)#exitRouter2(config)#int s0/3/0Router2(config-if)#ip addr 192.168.1.2 255.255.255.0Router2(config-if)#no shuRouter2(config-if)#exitRouter2(config)#int s0/3/1Router2(config-if)#ip addr 192.168.2.1 255.255.255.0Router2(config-if)#no shu
router 3的配置
Router>enRouter#conf tRouter(config)#hostname Router3Router3(config)#int l0Router3(config-if)#ip addr 3.3.3.3 255.255.255.0Router3(config-if)#no shuRouter3(config-if)#exitRouter3(config)#int s0/3/1Router3(config-if)#ip addr 192.168.2.2 255.255.255.0Router3(config-if)#no shuRouter3(config-if)#exitRouter3(config)#int s0/3/0Router3(config-if)#ip addr 192.168.3.1 255.255.255.0Router3(config-if)#no shu
router 4的配置
Router>enRouter#conf tRouter(config)#hostname Router4Router4(config)#int l0Router4(config-if)#ip addr 4.4.4.4 255.255.255.0Router4(config-if)#exitRouter4(config)#int s0/3/0Router4(config-if)#ip addr 192.168.3.2 255.255.255.0Router4(config-if)#no shu
配置ospf路由协议
router 1的配置
Router1(config)#router ospf 1Router1(config-router)#routet-id 1.1.1.1Router1(config-router)#network 1.1.1.0 0.0.0.255 area 0Router1(config-router)#network 192.168.1.0 0.0.0.255 area 0Router1(config-router)#exit
router 2的配置
Router2(config)#router ospf 1Router2(config-router)#router-id 2.2.2.2Router2(config-router)#network 2.2.2.0 0.0.0.255 area 0Router2(config-router)#network 192.168.1.0 0.0.0.255 area 0Router2(config-router)#network 192.168.2.0 0.0.0.255 area 0Router2(config-router)#exit
router 3的配置
Router3(config-if)#exitRouter3(config)#router ospf 1Router3(config-router)#router-id 3.3.3.3Router3(config-router)#network 3.3.3.0 0.0.0.255 area 0Router3(config-router)#network 192.168.2.0 0.0.0.255 area 0Router3(config-router)#network 192.168.3.0 0.0.0.255 area 0Router3(config-router)#exit
router 4的配置
Router4(config)#router ospf 1Router4(config-router)#router-id 4.4.4.4Router4(config-router)#network 4.4.4.0 0.0.0.255 area 0Router4(config-router)#network 192.168.3.0 0.0.0.255 area 0Router4(config-router)#exit
ospf 配置完成查看router 1路由表
Router1#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 1.0.0.0/24 is subnetted, 1 subnets C 1.1.1.0 is directly connected, Loopback0 2.0.0.0/32 is subnetted, 1 subnets O 2.2.2.2 [110/65] via 192.168.1.2, 00:03:26, Serial0/3/0 3.0.0.0/32 is subnetted, 1 subnets O 3.3.3.3 [110/129] via 192.168.1.2, 00:01:34, Serial0/3/0 4.0.0.0/32 is subnetted, 1 subnets O 4.4.4.4 [110/193] via 192.168.1.2, 00:00:09, Serial0/3/0 C 192.168.1.0/24 is directly connected, Serial0/3/0 O 192.168.2.0/24 [110/128] via 192.168.1.2, 00:03:26, Serial0/3/0 O 192.168.3.0/24 [110/192] via 192.168.1.2, 00:01:34, Serial0/3/0 查看ospf数据库的信息 Router1#show ip ospf database OSPF Router with ID (1.1.1.1) (Process ID 1) Router Link States (Area 0) Link ID ADV Router Age Seq# Checksum Link count 1.1.1.1 1.1.1.1 296 0x80000005 0x005275 3 2.2.2.2 2.2.2.2 189 0x80000005 0x0087b4 5 3.3.3.3 3.3.3.3 110 0x80000005 0x00071d 5 4.4.4.4 4.4.4.4 110 0x80000003 0x009408 3 用ping命令检查网络是否互通 router 1 ping router 2 Router1#ping 2.2.2.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 4/8/12 ms router 1 ping router 3 Router1#ping 3.3.3.3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 11/11/13 ms router 1 ping router 4 Router1#ping 4.4.4.4 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 10/14/18 ms 已实现全网互通，实验完成转载于:https://www.cnblogs.com/knightysa/p/9228896.html
相关资源：思科路由协议OSPF实验配置