1、R1配置：
[R1]interface g0/0/0
[R1-GigabitEthernet0/0/0]ip address 192.168.1.254 24
[R1]interface g0/0/1
[R1-GigabitEthernet0/0/1]ip address 192.168.13.1 24
2、R2配置：
[R2]interface g0/0/0
[R2-GigabitEthernet0/0/0]ip add
[R2-GigabitEthernet0/0/0]ip address 192.168.1.253 24
[R2-GigabitEthernet0/0/0]int g0/0/1
[R2-GigabitEthernet0/0/1]ip add
[R2-GigabitEthernet0/0/1]ip address 192.168.23.1 24
3、R3配置：
[R3]interface g0/0/0
[R3-GigabitEthernet0/0/0]ip ad
[R3-GigabitEthernet0/0/0]ip address 192.168.13.2 24
[R3]interface g0/0/0
[R3-GigabitEthernet0/0/0]ip ad
[R3-GigabitEthernet0/0/0]ip address 192.168.13.2 24
[R3-LoopBack1]ip address 10.0.0.1 24
4、R1、R2配置vrrp，并监控g0/0/1
[R1-GigabitEthernet0/0/0]vrrp vrid 1 virtual-ip 192.168.1.250
[R1-GigabitEthernet0/0/0]vrrp vrid 1 track interface g0/0/1 reduced 50
[R2-GigabitEthernet0/0/0]vrrp vrid 1 virtual-ip 192.168.1.250
[R2-GigabitEthernet0/0/0]vrrp vrid 1 track interface g0/0/1 reduced
