(config)#router ospf 进程号
(config)#network 网号号反码 area 区域号
动态路由实验
建立一个简单拓扑用于实验
IP和网段的配置
电脑
IP
掩码
网关
DNS
PC0
192.168.1.1
255.255.255.0
192.168.1.254
192.168.4.1
Server0
192.168.4.1
255.255.255.0
192.168.4.254
192.168.4.1
Server1
192.168.4.2
255.255.255.0
192.168.4.254
192.168.4.1
路由器
F0/0
F0/1
Router0
192.168.1.254
192.168.2.1
Router1
192.168.2.2
192.168.3.1
Router2
192.168.3.2
192.168.4.254
路由器设置
Router0
Router(config)#int f0/0
Router(config-if)#ip add 192.168.1.254 255.255.255.0
Router(config-if)#no sh
Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol onInterface FastEthernet0/0, changed state to up
Router(config-if)#int f0/1
Router(config-if)#ip add 192.168.2.1 255.255.255.252
Router(config-if)#no sh
Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
Router(config-if)#
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router1
Router(config)#int f0/0
Router(config-if)#ip add 192.168.2.2 255.255.255.252
Router(config-if)#no sh
Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol onInterface FastEthernet0/0, changed state to up
Router(config-if)#
Router(config-if)#int f0/1
Router(config-if)#ip add 192.168.3.1 255.255.255.252
Router(config-if)#no shutdown
Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
Router(config-if)#
Router#
%SYS-5-CONFIG_I: Configured from console by console
Router2
Router(config)#int f0/0
Router(config-if)#ip add 192.168.3.2 255.255.255.252
Router(config-if)#no sh
Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol onInterface FastEthernet0/0, changed state to up
Router(config-if)#int f0/1
Router(config-if)#ip add 192.168.4.254 255.255.255.0
Router(config-if)#no sh
Router(config-if)#
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol onInterface FastEthernet0/1, changed state to up
Router(config-if)#
Router#
Router(config-router)#do 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 externaltype1, N2 - OSPF NSSA externaltype2
E1 - OSPF externaltype1, E2 - OSPF externaltype2, 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 isnotset
R 192.168.1.0/24 [120/2] via 192.168.3.1, 00:00:01, FastEthernet0/0192.168.2.0/30is subnetted, 1 subnets
R 192.168.2.0 [120/1] via 192.168.3.1, 00:00:01, FastEthernet0/0192.168.3.0/30is subnetted, 1 subnets
C 192.168.3.0is directly connected, FastEthernet0/0
C 192.168.4.0/24is directly connected, FastEthernet0/1
Router(config-router)#
Router#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 externaltype1, N2 - OSPF NSSA externaltype2
E1 - OSPF externaltype1, E2 - OSPF externaltype2, 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 isnotset
D 192.168.1.0/24 [90/30720] via 192.168.2.1, 00:03:50, FastEthernet0/0192.168.2.0/30is subnetted, 1 subnets
C 192.168.2.0is directly connected, FastEthernet0/0192.168.3.0/30is subnetted, 1 subnets
C 192.168.3.0is directly connected, FastEthernet0/1
D 192.168.4.0/24 [90/30720] via 192.168.3.2, 00:00:48, FastEthernet0/1
Router#
ospf
Router0
Router(config)#router ospf 1
Router(config-router)#network192.168.1.00.0.0.255 area 0
Router(config-router)#network192.168.2.00.0.0.3 area 0
Router1
Router(config)#router ospf 1
Router(config-router)#network192.168.2.00.0.0.3 area 0
Router(config-router)#network192.168.3.00.0.0.3 area 1
Router2
Router(config)#router ospf 1
Router(config-router)#network192.168.3.00.0.0.3 area 1
Router(config-router)#network192.168.4.00.0.0.255 area 1
实现的路由表
Router#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 externaltype1, N2 - OSPF NSSA externaltype2
E1 - OSPF externaltype1, E2 - OSPF externaltype2, 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 isnotset
O IA 192.168.1.0/24 [110/3] via 192.168.3.1, 00:01:15, FastEthernet0/0192.168.2.0/30is subnetted, 1 subnets
O IA 192.168.2.0 [110/2] via 192.168.3.1, 00:01:15, FastEthernet0/0192.168.3.0/30is subnetted, 1 subnets
C 192.168.3.0is directly connected, FastEthernet0/0
C 192.168.4.0/24is directly connected, FastEthernet0/1
Router#