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Cisco ME 3400 EthernetAccess Switch SoftwareConfiguration Guide
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Chapter33 Configuring HSRP
Configuring HSRP
Beginning in privileged EXEC mode, use one or more of these steps to configure H SR P au then t ica tio n
and timers on an interface:
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 defaultvalues.
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 gigabitethernet0/1
Switch(config-if)# no switchport
Switch(config-if)# standby 1 authentication word
Switch(config-if)# end
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 gigabitethernet0/1
Switch(config-if)# no switchport
Switch(config-if)# standby 1 ip
Switch(config-if)# standby 1 timers 5 15
Switch(config-if)# end
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 interface interface-id Enter interface configuration mode, and enter the HSRP
interface on which you want to set authentication.
Step3 no shutdown Enable the port, if necessary. By default, UNIs are disabled, and
NNIs are enabled.
Step4 standby [group-number] authentication string (Optional) authentication string—Enter a string to be carried in
all HSRP messages. The authentication string can be up to eight
characters in length; the default string is cisco.
(Optional) group-number—The group number to which the
command applies.
Step5 standby [group-number] timers hellotime
holdtime (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.
Step6 end Return to privileged EXEC mode.
Step7 show running-config Verify the configuration of the standby groups.
Step8 copy running-config startup-config (Optional) Save your entries in the configuration file.