骨干链路端口地址配置:
AR1:
[r1]interface g0/0/0
[r1-GigabitEthernet0/0/0]ip address 192.168.1.1 30
[r1]interface g0/0/1
[r1-GigabitEthernet0/0/1]ip address 192.168.1.22 30
AR2:
[r2]interface g0/0/0
[r2-GigabitEthernet0/0/0]ip address 192.168.1.2 30
[r2]interface g0/0/1
[r2-GigabitEthernet0/0/1]ip address 192.168.1.5 30
AR3:
[r3]interface g0/0/0
[r3-GigabitEthernet0/0/0]ip address 192.168.1.18
[r3]interface g0/0/1
[r3-GigabitEthernet0/0/1]ip address 192.168.1.21 30
AR4:
[r4]interface g0/0/0
[r4-GigabitEthernet0/0/0]ip address 192.168.1.6 30
[r4]interface g2/0/0
[r4-GigabitEthernet4/0/0]ip address 192.168.1.9
[r4]interface g4/0/0
[r4-GigabitEthernet4/0/0]ip address 192.168.1.14 30
AR5:
[r5]interface g0/0/0
[