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VRRP之监视上行链路
2022-07-02 06:08:00 【火锅就要吃红锅】
一、实验目的
学会配置VRRP 实现监控master所连接的上行链路
二、实验需求
基础VRRP告诉我们,可以实现冗余的功能,mater路由器出现故障,backup路由器就立马顶替
但是,对于master所连接的上行链路,却无法发现它是否正常,现通过配置,达到实验目的
三、实验拓扑
四、实验分析和配置
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 配置监控功能(如果该接口的状态变为down,
无论是协议状态还是物理状态,VRRP优先级将被立减30)
当R2收到R1发送的VRRP报文,意识到自己的优先级比对方高,由于抢占功能缺省已激活,所以就切换为master状态
R2:
sys
sys R2
int g0/0/0
ip add 192.168.1.252 24
vrrp vrid 1 virtual-ip 192.168.1.254
五、实验结论
可以在R1上部署VRRP监视(track)功能,通过这个功能来监视上行接口G0/0/1,当R1感知到这个接口的状态切换到down时,会自动将VRRP的优先级减去一个值,从而“退位让贤”
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