OSPF末节和完全末节实验

如下拓扑;

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在R1上:

配置接口:

1(config)#int s1/1

1(config-if)#ip add 192.168.1.1 255.255.255.0

1(config-if)#no shut

1(config-if)#exit

启动协议:

1(config)#router ospf 1

1(config-router)#net 192.168.1.0 0.0.0.255 area 1

末节区域配置:

1(config-router)#area 1 stub

在R2上:

配置接口:

2(config)#int s1/0

2(config-if)#ip add 192.168.1.2 255.255.255.0

2(config-if)#clock rate 56000

2(config-if)#no shut

2(config-if)#int s1/1

2(config-if)#ip add 192.168.2.1 255.255.255.0

2(config-if)#clock rate 56000

2(config-if)#no shut

2(config-if)#

启动协议:

2(config)#router ospf 1

2(config-router)#net 192.168.1.0 0.0.0.255 area 1

2(config-router)#net 192.168.2.0 0.0.0.255 area 0

末节区域配置:

2(config-router)#area 1 stub

2(config-router)#

在R3上:

配置接口:

3(config-if)#int s1/0

3(config-if)#ip add 192.168.2.2 255.255.255.0

3(config-if)#no shut

3(config-if)#int s1/2

3(config-if)#ip add 192.168.3.1 255.255.255.0

3(config-if)#no shut

启动协议:

3(config)#router ospf 1

3(config-router)#net 192.168.2.0 0.0.0.255 area 0

3(config-router)#net 192.168.3.0 0.0.0.255 area 2

配置完全末节区域:

3(config-router)#area 2 stub no-summary

在R7上:

配置接口:

7(config)#int s1/2

7(config-if)#ip add 192.168.3.2 255.255.255.0

7(config-if)#clock rate 56000

7(config-if)#no shut

7(config-if)#exit

启动协议:

7(config)#router ospf 1

7(config-router)#net 192.168.3.0 0.0.0.255 area 2

配置完全末节区域:

7(config-router)#area 2 stub no-summary

测试:

在R1上:

末节区域的路由表:接受AS内的LSA, AS外的路由不在接受

1#show ip route

Codes: C - connected, S - static, 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

i - IS-IS, su - IS-IS summary, 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 192.168.1.2 to network 0.0.0.0

C 192.168.1.0/24 is directly connected, Serial1/1

O IA 192.168.2.0/24 [110/128] via 192.168.1.2, 00:00:42, Serial1/1 可接受AS内的路由

O IA 192.168.3.0/24 [110/192] via 192.168.1.2, 00:00:42, Serial1/1 可接受AS内的路由

O*IA 0.0.0.0/0 [110/65] via 192.168.1.2, 00:00:42, Serial1/1 不在接受AS外的路由信息

在R7上:

完全末节区域:不接受AS内汇总路由信息(其它网络路由信息)

7#show ip route

Codes: C - connected, S - static, 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

i - IS-IS, su - IS-IS summary, 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 192.168.3.1 to network 0.0.0.0

C 192.168.3.0/24 is directly connected, Serial1/2 只剩下了直连网络路由

O*IA 0.0.0.0/0 [110/65] via 192.168.3.1, 00:00:32, Serial1/2

7#

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