Command Reference Guide

1034 | Object Tracking
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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
Defaults
None
Command Modes
CONFIGURATION
Command
History
Related
Commands
Usage
Information
Use this command to create an object that tracks the UP and/or DOWN threshold of an IPv4 route
metric. In order for a route’s metric to be tracked, the route must appear as an entry in the routing table.
A tracked IPv4 route is considered to match an entry in the routing table only if the exact IPv4 address
and prefix length match a table entry. For example, when configured as a tracked route, 10.0.0.0/24
does not match the routing table entry 10.0.0.0/8. If no route-table entry has the exact IPv4 address and
prefix length, the status of the tracked route is considered to be DOWN.
When you configure the threshold of an IPv4 route metric as a tracked object, the UP/DOWN state of
the tracked route is also determined by the current metric for the route in the routing table.
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.
ip-address/
prefix-len
Enter an IPv4 address in dotted decimal format. Valid IPv4 prefix lengths are from /0 to
/32.
vrf vrf-name
(Optional) E-Series only: You can configure a VPN routing and forwarding (VRF)
instance to specify the virtual routing table to which the tracked route belongs.
Version 8.3.12.0 Introduced on the S4810.
Version 8.4.1.0 Introduced
show track Display information about tracked objects, including configuration, current state, and
clients which track the object.
threshold metric Configure the metric threshold used to determine the UP and/or DOWN state of a tracked
route.
track resolution
ip route
Configure the protocol-specific resolution value used to scale an IPv4 route metric.