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HSRP Active and Standby timers

lquin1978
Level 1
Level 1

Im confused about the Active and Standby timers used within HSRP.  From the Cisco website:

ACTIVE TIMER: This timer is used to monitor the active router. This timer                     starts any time an active router receives a hello packet. This timer expires in                     accordance with the hold time value that is set in the related field of the                     HSRP hello message.

STANDBY TIMER: This timer is used in order to monitor the standby router. The                     timer starts any time the standby router receives a hello packet. This timer                     expires in accordance with the hold time value that is set in the respective                     hello packet.

Are these timers used by other routers to montor the active and standby routers? or are these timers local to the active and standby router? and if so what happens if they stop recieving the hellos?

1 Reply 1

Reza Sharifi
Hall of Fame
Hall of Fame

The HSRP timers are locally defined per group. When the stand-by router's hold time expires, which is equivalent to 3 hello packets, the stand-by router will take over.

HTH

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