Object Tracking | 993
• If the scaled metric for a route entry is less than or equal to the UP threshold, the state of a route is
UP.
• If the scaled metric for a route is greater than or equal to the DOWN threshold or the route is not
entered in the routing table, the state of a route is DOWN.
You configure the UP and DOWN thresholds for each tracked route with the threshold metric
command. The default UP threshold is 254; the default DOWN threshold is 255. The notification of a
change in the state of a tracked object is sent when a metric value crosses a configured threshold.
The tracking process uses a protocol-specific resolution value to convert the actual metric in the
routing table to a scaled metric in the range 0 to 255. You can configure the resolution value used to
scale route metrics for supported protocols with the track resolution ip route and track resolution ipv6
route commands.
track
c e s
Enter Object Tracking command mode to modify the configuration of a tracked object.
Syntax
track object-id
Parameters
Defaults
None
Command Modes
CONFIGURATION
Command
History
Related
Commands
Usage
Information
Use this command to enter the Object Tracking mode to edit an existing configuration of a tracked
object. For example, after you enter the track object-id command, you can modify or add a delay
timer (delay command) or a metric threshold (threshold metric command) for the UP or DOWN
state of the tracked object.
track ip route metric threshold
c e s
Configure object tracking on the threshold of an IPv4 route metric.
Syntax
track object-id ip route ip-address/prefix-len metric threshold [vrf vrf-name]
To return to the default setting, enter no track object-id.
Parameters
object-id
Enter the ID number of the tracked object. Range: 1 to 65535.
Version 8.4.1.0 Introduced
show track Display information about tracked objects, including configuration, current state, and
clients which track the object.
object-id
Enter the ID number of the tracked object. Range: 1 to 65535.
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