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 51
5、r1、r2、r3配置静态路由，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上查看vrrp
r2上查看
pc上测试
7、模拟r2->r3线路故障，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，链路备份成功。