OSPF-特殊区域

配置命令：

R1：
sysname AR1
interface GigabitEthernet0/0/0
 ip address 202.1.1.1 255.255.255.0
interface GigabitEthernet0/0/1
 ip address 172.16.1.1 255.255.255.0
ospf 1
 import-route rip 1
 area 0.0.0.1
  network 172.16.1.0 0.0.0.255
rip 1
 undo summary
 version 2
 network 202.1.1.0
 import-route ospf 1
R2：
sysname AR2
interface GigabitEthernet0/0/0
 ip address 172.16.2.1 255.255.255.0
interface GigabitEthernet0/0/1
 ip address 172.16.1.2 255.255.255.0
ospf 1
 area 0.0.0.0
  network 172.16.2.0 0.0.0.255
 area 0.0.0.1
  network 172.16.1.0 0.0.0.255

R3：
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
ospf 1
 area 0.0.0.0
  network 172.16.2.0 0.0.0.255
 area 0.0.0.2
  network 172.16.3.0 0.0.0.255
stub
stub no-summary
AR4:
interface GigabitEthernet0/0/1
 ip address 172.16.3.2 255.255.255.0
interface GigabitEthernet0/0/0
 ip address 192.168.1.1 255.255.255.0

ospf 1
 import-route rip 1
 area 0.0.0.2
  network 172.16.3.0 0.0.0.255
  nssa

rip 1
 undo summary
 version 2
 network 192.168.1.0

AR5:
sysname AR5
interface GigabitEthernet0/0/0
 ip address 202.1.1.2 255.255.255.0
interface LoopBack0
 ip address 8.8.8.8 255.255.255.255
rip 1
 undo summary
 version 2
 network 202.1.1.0
 network 8.0.0.0

AR6
interface GigabitEthernet0/0/0
 ip address 192.168.1.2 255.255.255.0

interface LoopBack0
 ip address 6.6.6.6 255.255.255.255

rip 1
 undo summary
 version 2
 network 192.168.1.0
 network 6.0.0.0
 import-route ospf 1