OSPF虚连接

配置命令：

AR1:
interface GigabitEthernet0/0/0
ip address 172.16.1.1 255.255.255.0
interface LoopBack0
ip address 1.1.1.1 255.255.255.255
ospf 1
area 0.0.0.0
network 172.16.1.0 0.0.0.255

AR2:

sysname AR2
interface GigabitEthernet0/0/0
ip address 172.16.1.2 255.255.255.0
interface GigabitEthernet0/0/1
ip address 172.16.2.1 255.255.255.0
interface LoopBack0
ip address 2.2.2.2 255.255.255.255
ospf 1
area 0.0.0.0
network 172.16.1.0 0.0.0.255
area 0.0.0.1
network 172.16.2.0 0.0.0.255
vlink-peer 3.3.3.3

AR3:
sysname AR3
interface GigabitEthernet0/0/0
ip address 172.16.2.2 255.255.255.0
interface GigabitEthernet0/0/1
ip address 172.16.3.1 255.255.255.0
interface LoopBack0
ip address 3.3.3.3 255.255.255.255
ospf 1 router-id 3.3.3.3
area 0.0.0.1
network 172.16.2.0 0.0.0.255
vlink-peer 2.2.2.2
area 0.0.0.2
network 172.16.3.0 0.0.0.255
AR4:
sysname AR4

interface GigabitEthernet0/0/0
ip address 172.16.3.2 255.255.255.0
interface LoopBack0
ip address 4.4.4.4 255.255.255.255
ospf 1 router-id 4.4.4.4
area 0.0.0.2
network 4.4.4.4 0.0.0.0
network 172.16.3.0 0.0.0.255