stub区域
第一步、预配置
r1(config)#int s2/1
r1(config-if)#ip add 12.0.0.1 255.255.255.0
r1(config-if)#no sh
r1(config-if)#int lo0
r1(config-if)#ip add 1.1.1.1 255.255.255.0
r1(config)#int lo1
r1(config-if)#ip add 1.1.0.1 255.255.255.0
r1(config-if)#int lo2
r1(config-if)#ip add 1.1.2.1 255.255.255.0
r1(config-if)#int lo3
r1(config-if)#ip add 1.1.3.1 255.255.255.0
r1(config-if)#end
r1(config-if)#exit
r1(config)#router ospf 1
r1(config-router)#net 12.0.0.1 0.0.0.0 a 1
r1(config-router)#net 1.0.0.0 0.255.255.255 a 1
r1(config-router)#end
r2(config)#int s2/1
r2(config-if)#ip add 12.0.0.2 255.255.255.0
r2(config-if)#no sh
r2(config-if)#int s2/2
r2(config-if)#ip add 23.0.0.2 255.255.255.0
r2(config-if)#no sh
r2(config-if)#int lo0
r2(config-if)#ip add 2.2.2.2 255.255.255.0
r2(config-if)#exit
r2(config)#router ospf 1
r2(config-router)#net 12.0.0.2 0.0.0.0 a 1
r2(config-router)#net 2.2.2.2 0.0.0.0 a 1
r2(config-router)#net 23.0.0.2 0.0.0.0 a 0
r2(config-router)#end
r3(config)#int s2/1
r3(config-if)#ip add 23.0.0.3 255.255.255.0
r3(config-if)#no sh
r3(config-if)#int s2/2
r3(config-if)#ip add 34.0.0.3 255.255.255.0
r3(config-if)#no sh
r3(config-if)#int lo0
r3(config-if)#ip add 3.3.3.3 255.255.255.0
r3(config-if)#exit
r3(config)#router ospf 1
r3(config-router)#net 23.0.0.3 0.0.0.0 a 0
r3(config-router)#net 3.3.3.3 0.0.0.0 a 0
r3(config-router)#net 34.0.0.3 0.0.0.0 a 2
r3(config-router)#end
r4(config)#int s2/1
r4(config-if)#ip add 34.0.0.4 255.255.255.0
r4(config-if)#no sh
r4(config-if)#int s2/2
r4(config-if)#ip add 45.0.0.4 255.255.255.0
r4(config-if)#no sh
r4(config-if)#int lo4
r4(config-if)#ip add 4.4.4.4 255.255.255.0
r4(config-if)#exit
r4(config)#router ospf 1
r4(config-router)#net 34.0.0.4 0.0.0.0 a 2
r4(config-router)#router eigrp 100
r4(config-router)#no au
r4(config-router)#net 45.0.0.4 0.0.0.0
r4(config-router)#net 4.0.0.0
r4(config-router)#router ospf 1
r4(config-router)#redistribute eigrp 100 subnets
r4(config-router)#end
r5(config)#int s2/2
r5(config-if)#ip add 45.0.0.5 255.255.255.0
r5(config-if)#no sh
r5(config-if)#int lo0
r5(config-if)#ip add 5.5.5.5 255.255.255.0
r5(config)#int lo1
r5(config-if)#ip add 5.5.0.5 255.255.255.0
r5(config-if)#int lo2
r5(config-if)#ip add 5.5.1.5 255.255.255.0
r5(config-if)#int lo3
r5(config-if)#ip add 5.5.2.5 255.255.255.0
r5(config-if)#int lo4
r5(config-if)#ip add 5.5.3.5 255.255.255.0
r5(config-if)#int lo5
r5(config-if)#ip add 5.5.4.5 255.255.255.0
r5(config-if)#router eigrp 100
r5(config-router)#no au
r5(config-router)#net 45.0.0.5 0.0.0.0
r5(config-router)#net 5.0.0.0
r5(config-router)#end
第二步、配置stub区域
r1(config)#router ospf 1
r1(config-router)#area 1 stub
r1(config-router)#end
r2(config)#router ospf 1
r2(config-router)#area 1 stub
配置stub以前的路由表：
r1#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 12.0.0.2 to network 0.0.0.0
34.0.0.0/24 is subnetted, 1 subnets
O IA 34.0.0.0 [110/192] via 12.0.0.2, 00:00:03, Serial2/1
1.0.0.0/24 is subnetted, 4 subnets
C 1.1.0.0 is directly connected, Loopback1
C 1.1.1.0 is directly connected, Loopback0
C 1.1.2.0 is directly connected, Loopback2
C 1.1.3.0 is directly connected, Loopback3
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/65] via 12.0.0.2, 00:00:03, Serial2/1
3.0.0.0/32 is subnetted, 1 subnets
O IA 3.3.3.3 [110/129] via 12.0.0.2, 00:00:03, Serial2/1
4.0.0.0/24 is subnetted, 1 subnets
O E2 4.4.4.0 [110/20] via 12.0.0.2, 00:00:03, Serial2/1
5.0.0.0/21 is subnetted, 1 subnets
O E2 5.5.0.0 [110/20] via 12.0.0.2, 00:03:23, Serial2/1
23.0.0.0/24 is subnetted, 1 subnets
O IA 23.0.0.0 [110/128] via 12.0.0.2, 00:03:23, Serial2/1
12.0.0.0/24 is subnetted, 1 subnets
C 12.0.0.0 is directly connected, Serial2/1
45.0.0.0/24 is subnetted, 1 subnets
O E2 45.0.0.0 [110/20] via 12.0.0.2, 00:03:23, Serial2/1
O*E2 0.0.0.0/0 [110/1] via 12.0.0.2, 00:03:23, Serial2/1
配置stub后的路由表：
r1#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 12.0.0.2 to network 0.0.0.0
34.0.0.0/24 is subnetted, 1 subnets
O IA 34.0.0.0 [110/192] via 12.0.0.2, 00:00:02, Serial2/1
1.0.0.0/24 is subnetted, 4 subnets
C 1.1.0.0 is directly connected, Loopback1
C 1.1.1.0 is directly connected, Loopback0
C 1.1.2.0 is directly connected, Loopback2
C 1.1.3.0 is directly connected, Loopback3
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/65] via 12.0.0.2, 00:00:02, Serial2/1
3.0.0.0/32 is subnetted, 1 subnets
O IA 3.3.3.3 [110/129] via 12.0.0.2, 00:00:02, Serial2/1
23.0.0.0/24 is subnetted, 1 subnets
O IA 23.0.0.0 [110/128] via 12.0.0.2, 00:00:02, Serial2/1
12.0.0.0/24 is subnetted, 1 subnets
C 12.0.0.0 is directly connected, Serial2/1
O*IA 0.0.0.0/0 [110/65] via 12.0.0.2, 00:00:03, Serial2/1
过滤掉了5型的路由
第三步、配置totaly-stub
r2(config)#router ospf 1
r2(config-router)#area 1 stub no-summary
r1#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 12.0.0.2 to network 0.0.0.0
1.0.0.0/24 is subnetted, 4 subnets
C 1.1.0.0 is directly connected, Loopback1
C 1.1.1.0 is directly connected, Loopback0
C 1.1.2.0 is directly connected, Loopback2
C 1.1.3.0 is directly connected, Loopback3
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/65] via 12.0.0.2, 00:00:45, Serial2/1
12.0.0.0/24 is subnetted, 1 subnets
C 12.0.0.0 is directly connected, Serial2/1
O*IA 0.0.0.0/0 [110/65] via 12.0.0.2, 00:00:01, Serial2/1
过滤掉了3型的和5型的路由
r1(config)#int s2/1
r1(config-if)#ip add 12.0.0.1 255.255.255.0
r1(config-if)#no sh
r1(config-if)#int lo0
r1(config-if)#ip add 1.1.1.1 255.255.255.0
r1(config)#int lo1
r1(config-if)#ip add 1.1.0.1 255.255.255.0
r1(config-if)#int lo2
r1(config-if)#ip add 1.1.2.1 255.255.255.0
r1(config-if)#int lo3
r1(config-if)#ip add 1.1.3.1 255.255.255.0
r1(config-if)#end
r1(config-if)#exit
r1(config)#router ospf 1
r1(config-router)#net 12.0.0.1 0.0.0.0 a 1
r1(config-router)#net 1.0.0.0 0.255.255.255 a 1
r1(config-router)#end
r2(config)#int s2/1
r2(config-if)#ip add 12.0.0.2 255.255.255.0
r2(config-if)#no sh
r2(config-if)#int s2/2
r2(config-if)#ip add 23.0.0.2 255.255.255.0
r2(config-if)#no sh
r2(config-if)#int lo0
r2(config-if)#ip add 2.2.2.2 255.255.255.0
r2(config-if)#exit
r2(config)#router ospf 1
r2(config-router)#net 12.0.0.2 0.0.0.0 a 1
r2(config-router)#net 2.2.2.2 0.0.0.0 a 1
r2(config-router)#net 23.0.0.2 0.0.0.0 a 0
r2(config-router)#end
r3(config)#int s2/1
r3(config-if)#ip add 23.0.0.3 255.255.255.0
r3(config-if)#no sh
r3(config-if)#int s2/2
r3(config-if)#ip add 34.0.0.3 255.255.255.0
r3(config-if)#no sh
r3(config-if)#int lo0
r3(config-if)#ip add 3.3.3.3 255.255.255.0
r3(config-if)#exit
r3(config)#router ospf 1
r3(config-router)#net 23.0.0.3 0.0.0.0 a 0
r3(config-router)#net 3.3.3.3 0.0.0.0 a 0
r3(config-router)#net 34.0.0.3 0.0.0.0 a 2
r3(config-router)#end
r4(config)#int s2/1
r4(config-if)#ip add 34.0.0.4 255.255.255.0
r4(config-if)#no sh
r4(config-if)#int s2/2
r4(config-if)#ip add 45.0.0.4 255.255.255.0
r4(config-if)#no sh
r4(config-if)#int lo4
r4(config-if)#ip add 4.4.4.4 255.255.255.0
r4(config-if)#exit
r4(config)#router ospf 1
r4(config-router)#net 34.0.0.4 0.0.0.0 a 2
r4(config-router)#router eigrp 100
r4(config-router)#no au
r4(config-router)#net 45.0.0.4 0.0.0.0
r4(config-router)#net 4.0.0.0
r4(config-router)#router ospf 1
r4(config-router)#redistribute eigrp 100 subnets
r4(config-router)#end
r5(config)#int s2/2
r5(config-if)#ip add 45.0.0.5 255.255.255.0
r5(config-if)#no sh
r5(config-if)#int lo0
r5(config-if)#ip add 5.5.5.5 255.255.255.0
r5(config)#int lo1
r5(config-if)#ip add 5.5.0.5 255.255.255.0
r5(config-if)#int lo2
r5(config-if)#ip add 5.5.1.5 255.255.255.0
r5(config-if)#int lo3
r5(config-if)#ip add 5.5.2.5 255.255.255.0
r5(config-if)#int lo4
r5(config-if)#ip add 5.5.3.5 255.255.255.0
r5(config-if)#int lo5
r5(config-if)#ip add 5.5.4.5 255.255.255.0
r5(config-if)#router eigrp 100
r5(config-router)#no au
r5(config-router)#net 45.0.0.5 0.0.0.0
r5(config-router)#net 5.0.0.0
r5(config-router)#end
第二步、配置stub区域
r1(config)#router ospf 1
r1(config-router)#area 1 stub
r1(config-router)#end
r2(config)#router ospf 1
r2(config-router)#area 1 stub
配置stub以前的路由表：
r1#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 12.0.0.2 to network 0.0.0.0
34.0.0.0/24 is subnetted, 1 subnets
O IA 34.0.0.0 [110/192] via 12.0.0.2, 00:00:03, Serial2/1
1.0.0.0/24 is subnetted, 4 subnets
C 1.1.0.0 is directly connected, Loopback1
C 1.1.1.0 is directly connected, Loopback0
C 1.1.2.0 is directly connected, Loopback2
C 1.1.3.0 is directly connected, Loopback3
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/65] via 12.0.0.2, 00:00:03, Serial2/1
3.0.0.0/32 is subnetted, 1 subnets
O IA 3.3.3.3 [110/129] via 12.0.0.2, 00:00:03, Serial2/1
4.0.0.0/24 is subnetted, 1 subnets
O E2 4.4.4.0 [110/20] via 12.0.0.2, 00:00:03, Serial2/1
5.0.0.0/21 is subnetted, 1 subnets
O E2 5.5.0.0 [110/20] via 12.0.0.2, 00:03:23, Serial2/1
23.0.0.0/24 is subnetted, 1 subnets
O IA 23.0.0.0 [110/128] via 12.0.0.2, 00:03:23, Serial2/1
12.0.0.0/24 is subnetted, 1 subnets
C 12.0.0.0 is directly connected, Serial2/1
45.0.0.0/24 is subnetted, 1 subnets
O E2 45.0.0.0 [110/20] via 12.0.0.2, 00:03:23, Serial2/1
O*E2 0.0.0.0/0 [110/1] via 12.0.0.2, 00:03:23, Serial2/1
配置stub后的路由表：
r1#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 12.0.0.2 to network 0.0.0.0
34.0.0.0/24 is subnetted, 1 subnets
O IA 34.0.0.0 [110/192] via 12.0.0.2, 00:00:02, Serial2/1
1.0.0.0/24 is subnetted, 4 subnets
C 1.1.0.0 is directly connected, Loopback1
C 1.1.1.0 is directly connected, Loopback0
C 1.1.2.0 is directly connected, Loopback2
C 1.1.3.0 is directly connected, Loopback3
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/65] via 12.0.0.2, 00:00:02, Serial2/1
3.0.0.0/32 is subnetted, 1 subnets
O IA 3.3.3.3 [110/129] via 12.0.0.2, 00:00:02, Serial2/1
23.0.0.0/24 is subnetted, 1 subnets
O IA 23.0.0.0 [110/128] via 12.0.0.2, 00:00:02, Serial2/1
12.0.0.0/24 is subnetted, 1 subnets
C 12.0.0.0 is directly connected, Serial2/1
O*IA 0.0.0.0/0 [110/65] via 12.0.0.2, 00:00:03, Serial2/1
过滤掉了5型的路由
第三步、配置totaly-stub
r2(config)#router ospf 1
r2(config-router)#area 1 stub no-summary
r1#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 12.0.0.2 to network 0.0.0.0
1.0.0.0/24 is subnetted, 4 subnets
C 1.1.0.0 is directly connected, Loopback1
C 1.1.1.0 is directly connected, Loopback0
C 1.1.2.0 is directly connected, Loopback2
C 1.1.3.0 is directly connected, Loopback3
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/65] via 12.0.0.2, 00:00:45, Serial2/1
12.0.0.0/24 is subnetted, 1 subnets
C 12.0.0.0 is directly connected, Serial2/1
O*IA 0.0.0.0/0 [110/65] via 12.0.0.2, 00:00:01, Serial2/1
过滤掉了3型的和5型的路由
