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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
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Chapter 38 Configuring Enhanced Object Tracking
Configuring Enhanced Object Tracking Features
Configuring Enhanced Object Tracking Features
These sections describe configuring enhanced object tracking:
• Default Configuration, page 38-2
• Tracking Interface Line-Protocol or IP Routing State, page 38-2
• Configuring a Tracked List, page 38-3
• Configuring HSRP Object Tracking, page 38-7
• Configuring Other Tracking Characteristics, page 38-8
• Configuring IP SLAs Object Tracking, page 38-8
• Configuring Static Routing Support, page 38-10
Default Configuration
No type of object tracking is configured.

Tracking Interface Line-Protocol or IP Routing State

You can track either the interface line protocol state or the interface IP routing state. When you track the
IP routing state, these three conditions are required for the object to be up:
• IP routing must be enabled and active on the interface.
• The interface line-protocol state must be up.
• The interface IP address must be known.
If all three of these conditions are not met, the IP routing state is down.
Beginning in privileged EXEC mode, follow these steps to track the line-protocol state or IP routing state
of an interface:
Command Purpose
Step 1 configure terminal Enter global configuration mode.
Step 2 track object-number interface
interface-id line-protocol (Optional) Create a tracking list to track the line-protocol state of an interface
and enter tracking configuration mode.
• The object-number identifies the tracked object and can be from 1 to 500.
• The interface interface-id is the interface being tracked.
Step 3 delay {up seconds [down seconds]
| [up seconds] down seconds}(Optional) Specify a period of time in seconds to delay communicating state
changes of a tracked object. The range is from 1 to 180 seconds.
Step 4 exit Return to global configuration mode.
Step 5 track object-number interface
interface-id ip routing (Optional) Create a tracking list to track the IP routing state of an interface, and
enter tracking configuration mode. IP-route tracking tracks an IP route in the
routing table and the ability of an interface to route IP packets.
• The object-number identifies the tracked object and can be from 1 to 500.
• The interface interface-id is the interface being tracked.