1、R1设置：

[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设置：

[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设置：

[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设置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 51

5、R1、R2、R3设置静态路由，确保全网互通

[R1]ip route-static 10.0.0.1 255.255.255.0 192.168.13.2

[R2]ip route-static 10.0.0.1 255.255.255.0 192.168.23.2

[R3]ip route-static 192.168.1.0 255.255.255.0 192.168.13.1

[R3]ip route-static 192.168.1.0 255.255.255.0 192.168.23.1

6、测试

R1上检察vrrp

R2上检察

PC上测试

7、模仿R2->R3路线毛病，测试路由

在PC上跟踪路由

R2上看vrrp

vrrp自动切换R2为master路由，链路备份告成。