VRRP协议

Skew time(秒)=(256－Backup路由器的优先级)/256

Master_Down_Interval(秒)=(3×VRRP报文的发送时间间隔)+Skew time

sequenceDiagram
participant up as 上层路由器
participant m as master router
Note left of m: 00-00-5E-00-01-{VRID} & VIP & 优先级
participant s as backup router

loop interval
m-->>s: vrrp 通告报文 I'm alive!
end
loop interval
s-->>m:BFD检测快速切换
end
loop interval
m-->>up:NQA检测调整自身优先级
end

graph TB

vr((virtual_router))-->rr0((real_router_0))
vr-->rr1((real_router_1))
vr-->rr2((real_router_2))