Cisco Catalyst 3750 Software Configuration Manual page 711

Chapter 29 Configuring HSRP
Command
Step 4 standby [group-number] timers hellotime
holdtime
Step 5 end
Step 6
show running-config
Step 7
copy running-config startup-config
Use the no standby [group-number] authentication string interface configuration command to delete
an authentication string. Use the no standby [group-number] timers hellotime holdtime interface
configuration command to restore timers to their default values.
This example shows how to configure word as the authentication string required to allow Hot Standby
routers in group 1 to interoperate:
Switch# configure terminal
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)# no switchport
Switch(config-if)# standby 1 authentication word
Switch(config-if)# end
Switch#
This example shows how to set the timers on standby group 1 with the time between hello packets at 5
seconds and the time after which a router is considered down to be 15 seconds:
Switch# configure terminal
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)# no switchport
Switch(config-if)# standby 1 ip
Switch(config-if)# standby 1 timers 5 15
Switch(config-if)# end
Switch#
78-15870-01
Purpose
(Optional) Configure the time between hello packets and the
time before other routers declare the active router to be down.
• group-number—The group number to which the command
applies.
• hellotime—The hello interval in seconds. The range is from
1 to 255; the default is 3 seconds.
holdtime—The time in seconds before the active or standby
•
router is declared to be down. The range is from 1 to 255;
the default is 10 seconds.
Return to privileged EXEC mode.
Verify the configuration of the standby groups.
(Optional) Save your entries in the configuration file.
Catalyst 3750 Metro Switch Software Configuration Guide
Configuring HSRP
29-9