Cisco WS-C3550-12G Software Configuration Manual page 603

Chapter 23 Configuring HSRP
Beginning in privileged EXEC mode, use one or more of these steps to configure HSRP priority
characteristics on an interface:
Command
Step 1 configure terminal
Step 2
interface interface-id
Step 3
standby [group-number] priority
priority [preempt [delay delay]]
Step 4
standby [group-number] [priority
priority] preempt [delay delay]
Step 5
standby [group-number] track
type number [interface-priority]
Step 6
end
Step 7 show running-config
Step 8 copy running-config
startup-config
78-11194-03
Purpose
Enter global configuration mode.
Enter interface configuration mode, and enter the HSRP interface on which
you want to set priority.
Set a priority value used in choosing the active router. The range is 1 to 255;
the default priority is 100. The highest number represents the highest priority.
• (Optional) group-number—The group number to which the command
applies.
• (Optional) preempt—Select so that when the local router has a higher
priority than the active router, it assumes control as the active router.
• (Optional) delay—Set to cause the local router to postpone taking over the
active role for the shown number of seconds. The range is 0 to 36000
(1 hour); the default is 0 (no delay before taking over).
Use the no form of the command to restore the default values.
Configure the router to preempt, which means that when the local router has
a higher priority than the active router, it assumes control as the active router.
• (Optional) group-number—The group number to which the command
applies.
• (Optional) priority—Enter to set or change the group priority. The range
is 1 to 255; the default is 100.
• (Optional) delay—Set to cause the local router to postpone taking over the
active role for the number of seconds shown. The range is 0 to 36000
(1 hour); the default is 0 (no delay before taking over).
Use the no form of the command to restore the default values.
Configure an interface to track other interfaces so that if one of the other
interfaces goes down, the device's Hot Standby priority is lowered.
• (Optional) group-number—The group number to which the command
applies.
• type—Enter the interface type (combined with interface number) that is
tracked.
• number—Enter the interface number (combined with interface type) that
is tracked.
• (Optional) interface-priority—Enter the amount by which the hot standby
priority for the router is decremented or incremented when the interface
goes down or comes back up. The default value is 10.
Return to privileged EXEC mode.
Verify the configuration of the standby groups.
(Optional) Save your entries in the configuration file.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring HSRP
23-7