与area0相隔后创建隧道使得其他区域可与area0通信路由信息
1、拓扑图
2、配置信息
R1#show run
Building configuration...
Current configuration : 627 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R1
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
ip address 12.12.12.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Vlan1
no ip address
shutdown
!
router ospf 10
log-adjacency-changes
network 1.1.1.0 0.0.0.255 area 0
network 12.12.12.0 0.0.0.255 area 0
!
ip classless
!
!
!
!
!
!
!
line con 0
line vty 0 4
login
!
!
!
end
R1#
-----------------------------------------
R2#show run
Building configuration...
Current configuration : 705 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R2
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
interface FastEthernet0/0
ip address 12.12.12.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 23.23.23.2 255.255.255.0
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
router ospf 10
log-adjacency-changes
area 1 virtual-link 3.3.3.3
network 12.12.12.0 0.0.0.255 area 0
network 2.2.2.0 0.0.0.255 area 1
network 23.23.23.0 0.0.0.255 area 1
!
ip classless
!
!
!
!
!
!
!
line con 0
line vty 0 4
login
!
!
!
end
R2#
---------------------------------------------------
R3#show run
Building configuration...
Current configuration : 703 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R3
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface FastEthernet0/0
ip address 23.23.23.3 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 34.34.34.3 255.255.255.0
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
router ospf 10
log-adjacency-changes
area 1 virtual-link 2.2.2.2
network 3.3.3.0 0.0.0.255 area 1
network 23.23.23.0 0.0.0.255 area 1
network 34.34.34.0 0.0.0.255 area 2
!
ip classless
!
!
!
!
!
!
!
line con 0
line vty 0 4
login
!
!
!
end
R3#
--------------------------------------------------
R4#show run
Building configuration...
Current configuration : 625 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R4
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
ip address 4.4.4.4 255.255.255.0
!
interface FastEthernet0/0
ip address 34.34.34.4 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Vlan1
no ip address
shutdown
!
router ospf 10
log-adjacency-changes
network 4.4.4.0 0.0.0.255 area 2
network 34.34.34.0 0.0.0.255 area 2
!
ip classless
!
!
!
!
!
!
!
line con 0
line vty 0 4
login
!
!
!
end
R4#
------------------------------------
3、实验结果，可以学习到area2的路由信息
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
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
2.0.0.0/32 is subnetted, 1 subnets
O IA 2.2.2.2 [110/2] via 12.12.12.2, 00:07:38, FastEthernet0/0
3.0.0.0/32 is subnetted, 1 subnets
O IA 3.3.3.3 [110/3] via 12.12.12.2, 00:07:38, FastEthernet0/0
4.0.0.0/32 is subnetted, 1 subnets
O IA 4.4.4.4 [110/4] via 12.12.12.2, 00:07:28, FastEthernet0/0
12.0.0.0/24 is subnetted, 1 subnets
C 12.12.12.0 is directly connected, FastEthernet0/0
23.0.0.0/24 is subnetted, 1 subnets
O IA 23.23.23.0 [110/2] via 12.12.12.2, 00:07:38, FastEthernet0/0
34.0.0.0/24 is subnetted, 1 subnets
O IA 34.34.34.0 [110/3] via 12.12.12.2, 00:07:38, FastEthernet0/0
R1#
