Reference Guide

656 | Object Tracking
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Figure 33-6. Command Example: track ipv6 route reachability
Tracking a Metric Threshold
To configure object tracking on the metric threshold of an IPv4 or IPv6 route, use the following
commands. To remove object tracking, enter the
no track object-id command.
Step Task Command Syntax Command Mode
1 (Optional) Reconfigure the
default resolution value used by
the specified protocol to scale the
metric for IPv4 or IPv6 routes.
track resolution {ip route | ipv6 route}
{isis resolution-value | ospf resolution-value}
Range of resolution values:
ISIS routes - 1 to 1000. Default: 1.
OSPF routes - 1 to 1592. Default: 1.
CONFIGURATION
2 Configure object tracking on the
metric of an IPv4 or IPv6 route.
track object-id
{ip route ip-address/prefix-len |
ipv6 route ipv6-address/prefix-len}
metric threshold [
vrf vrf-name]
Valid object IDs are from 1 to 65535.
Enter an IPv4 address in dotted decimal format.Valid
IPv4 prefix lengths are from /0 to /32.
Enter an IPv6 address in X:X:X:X::X format. Valid
IPv6 prefix lengths are from /0 to /128.
CONFIGURATION
3 (Optional) Configure the time
delay used before communicating
a change in the UP and/or
DOWN status of a tracked route.
delay {[up seconds] [down seconds]}
Valid delay times are from 0 to 180 seconds. Default:
0.
OBJECT
TRACKING
4 (Optional) Identify the tracked
object with a text description.
description text
The text string can be up to 80 characters.
OBJECT
TRACKING
5 (Optional) Configure the metric
threshold for the UP and/or
DOWN routing status to be
tracked for the specified route.
threshold metric {[up number] [down number]}
Default UP threshold: 254. The routing state is UP if
the scaled route metric is less than or equal to the UP
threshold.
Default DOWN threshold: 255. The routing state is
DOWN if the scaled route metric is greater than or
equal to the DOWN threshold.
OBJECT
TRACKING
FTOS(conf)#track 105 ipv6 route 1234::/64 reachability
FTOS(conf-track-105)#delay down 5
FTOS(conf-track-105)#description Headquarters
FTOS(conf-track-105)#end
FTOS#show track 105
Track 105
IPv6 route 1234::/64 reachability
Description: Headquarters
Reachability is Down (route not in route table)
2 changes, last change 00:03:03