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Configuring HSRP
Beginning in privileged EXEC mode, use one or more of these steps to configure HSRP authentication
and timers on an interface:
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3
no shutdown
Step 4
standby [group-number] authentication string
Step 5
standby [group-number] timers hellotime
holdtime
Step 6
end
Step 7
show running-config
Step 8
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 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
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
33-10
Purpose
Enter global configuration mode.
Enter interface configuration mode, and enter the HSRP
interface on which you want to set authentication.
Enable the port, if necessary. By default, UNIs are disabled, and
NNIs are enabled.
(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.
(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.
Chapter 33
Configuring HSRP
78-17058-01
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