@Adam-Tyler said in HSRP failover question:
Hello, I need some clarification on HSRP groups please. I thought all interfaces that were included in an HSRP group were forced to failover at once?
So if you have gi0/0 and gi0/1 in the same HSRP group and you shut the gi0/0 interface down, gi0/1 would failover to the other router too?
Great question! It's not instaneous in its reaction to a failure. In HSRP the
standby router will take over only after the
holddown timer expires (approximately missing 3 hellos from
active router, by default). This is influenced in real implementation by routing protocol convergence timers and even HSRP timers configured. If everything is left to defaults then failover becomes automatic but not instanteous.