Monitoring uplink of VRRP

One 、 The experiment purpose

Learn to configure VRRP Implementation monitoring master Uplink connected

Two 、 The experimental requirements

Basics VRRP Tell us , It can realize redundant functions ,mater Router failure ,backup The router immediately replaces
however , about master Uplink connected , But I can't find out whether it's normal , Now configure , Achieve the purpose of the experiment

3、 ... and 、 The topology

Four 、 Experimental analysis and configuration

R1：
sys 
sys R1
int g0/0/0
ip add 192.168.1.253 24
vrrp vrid 1 virtual-ip 192.168.1.254
vrrp vrid 1 priority 120 
vrrp vrid 1 track interface g0/0/1 reduced 30   Configure monitoring functions （ If the status of the interface changes to down,
 Whether it is protocol state or physical state ,VRRP Priority will be reduced 30）
 When R2 received R1 Sent VRRP message , Realize that your priority is higher than the other party , Because the preemption function is activated by default , So switch to master state 

R2:
sys 
sys R2
int g0/0/0
ip add 192.168.1.252 24
vrrp vrid 1 virtual-ip 192.168.1.254

5、 ... and 、 The experimental conclusion

Can be in R1 Upper Department VRRP monitor （track） function , Use this function to monitor the uplink interface G0/0/1, When R1 Sense that the state of this interface switches to down when , Will automatically VRRP Priority of minus one value , thus “ Abdicate for the good ”