Cisco Systems 3750E manual Configuring Hsrp Object Tracking, 40-17

Chapter 40 Configuring HSRP and Enhanced Object Tracking

Configuring Enhanced Object Tracking

This example configures tracked list 4 with three objects and a specified percentages to measure the state of the list:

Switch(config)# track 4 list threshold percentage

Switch(config-track)# object 1

Switch(config-track)# object 2

Switch(config-track)# object 3

Switch(config-track)#threshold percentage up 51 down 10

Switch(config-track)# exit

Configuring HSRP Object Tracking

Beginning in privileged EXEC mode, follow these steps to configure a standby HSRP group to track an object and change the HSRP priority based on the object state:

	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	track object-number{interface	(Optional) Create a tracking list to track the configured state and enter
	interface-id{line-protocol ip	tracking configuration mode.
	routing} ip route	Note Although visible in the command-line help, the rtr keyword is not
	ip-address/prefix-length {metric
		supported.
	threshold reachability} list
	{boolean {and or}} {threshold	• The object-numberrange is from 1 to 500.
	{weight percentage}}}
		• Enter interface interface-idto select an interface to track.
		– Enter line-protocolto track the interface line protocol state.
		– Enter ip routing to track the interface IP routing state.
		• Enter ip route ip-address/prefix-lengthto track the state of an IP route.
		– Enter metric threshold to track the threshold metric. The default up
		threshold is 254 and the default down threshold is 255.
		– Enter reachability to track if the route is reachable.
		• Enter list to track objects grouped in a list. Configure the list as
		described on the previous pages.
		– For boolean, see the “Boolean Expression” section on page 40-14
		– For threshold weight, see the “Weight Threshold” section on
		page 40-15
		– For threshold percentage, see the “Percentage Threshold” section
		on page 40-16
		Note Repeat this step for each interface to be tracked.
Step 3
	exit	Return to global configuration mode.
Step 4
	interface interface-id	Enter interface configuration mode.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02		40-17