Cisco Systems 3750E Track track-number list threshold, Percentage, Object object-number, 40-16

Chapter 40 Configuring HSRP and Enhanced Object Tracking

Configuring Enhanced Object Tracking

Use the no track track-numberglobal configuration command to delete the tracked list.

The example configures track list 4 to track by weight threshold. If object 1, and object 2 are down, then track list 4 is up, because object 3 satisfies the up threshold value of up 30. But, if object 3 is down, both objects 1 and 2 must be up in order to satisfy the threshold weight.

Switch(config)# track 4 list threshold weight

Switch(config-track)# object 1 weight 15

Switch(config-track)# object 2 weight 20

Switch(config-track)# object 3 weight 30

Switch(config-track)#threshold weight up 30 down 10

Switch(config-track)# exit

This configuration can be useful if object 1 and object 2 represent two small bandwidth connections and object 3 represents one large bandwidth connection. The configured down 10 value means that once the tracked object is up, it will not go down until the threshold value is equal to or lower than 10, which in this example means that all connections are down.

Percentage Threshold

To track by percentage threshold, configure a tracked list of objects, specify that a percentage will be used as the threshold, and specify a percentage for all objects in the list. The state of the list is determined by comparing the assigned percentage of each object to the list.

You cannot use the Boolean “NOT” operator in a percentage threshold list.

Beginning in privileged EXEC mode, follow these steps to configure a tracked list of objects by using a percentage threshold:

	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	track track-numberlist threshold	Configure a tracked list object and enter tracking configuration mode. The
	percentage	track-numbercan be from 1 to 500.
		• threshold—Specify the state of the tracked list based on a threshold.
		• percentage—Specify that the threshold is based on percentage.
Step 3
	object object-number	Specify the object to be tracked. The range is from 1 to 500.
		Note An object must exist before you can add it to a tracked list.
Step 4
	threshold percentage {up number	Specify the threshold percentage.
	[down number]}	• up number—The valid range is from 1 to 100.
		• down number]—(Optional) The range depends on the number selected
		for the up number. If you configure the up number as 25, the range
		shown for the down number is 0 to 24.
Step 5
	delay {up seconds [down seconds]	(Optional) Specify a period of time in seconds to delay communicating state
	[up seconds] down seconds}	changes of a tracked object. The range is from 1 to 180 seconds.
Step 6
	end	Return to privileged EXEC mode.
Step 7
	show track object-number	Verify that the specified objects are being tracked.
Step 8
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

Use the no track track-numberglobal configuration command to delete the tracked list.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
40-16	OL-9775-02