Administrator Guide

3. (Optional) Identify the tracked object with a text description.
OBJECT TRACKING mode
description text
The text string can be up to 80 characters.
4. (Optional) Display the tracking configuration and the tracked object’s status.
EXEC Privilege mode
show track object-id
Example of configuring object tracking for an IPv4 interface.
Dell(conf)#track 101 interface tengigabitethernet 7/2/1 ip routing
Dell(conf-track-101)#delay up 20
Dell(conf-track-101)#description NYC metro
Dell(conf-track-101)#end
Dell#show track 101
Track 101
Interface TenGigabitEthernet 7/2/1 ip routing
Description: NYC metro
Example of configuring object tracking for an IPv6 interface.
Dell(conf)#track 103 interface tengigabitethernet 7/11/1 ipv6
routing
Dell(conf-track-103)#description Austin access point
Dell(conf-track-103)#end
Dell#show track 103
Track 103
Interface TenGigabitEthernet 7/11/1 ipv6 routing
Description: Austin access point
Configuring track reachability refresh interval
If there is no entry in ARP table or if the next-hop address in the ARP cache ages out for a route tracked for its reachability, an attempt is
made to check if the next-hop address is reachable after a certain refresh interval to see if the next-hop address appear in the ARP cache
before considering it as DOWN.
You can change the refresh interval for which the next-hop address is checked. The default refresh interval is 60 seconds. The object
tracking is done after the default refresh interval everytime and whenever there is a change in reachability state, the next-hop will be
considered as DOWN. The default interval is changed using the track reachability refresh command. You can disable the track
reachability feature by setting the refresh interval to 0.
To change the refresh interval for tracking an IPv4 or IPv6 route, use the following command.
Change the reachability refresh interval for tracking of an IPv4 or IPv6 route.
CONFIGURATION mode
track reachability refresh interval
The refresh interval range is from 0 to 60 seconds. The default is 60 seconds.
The following example shows how to change the refresh interval for tracking the reachability of the next-hop:
DellEMC#configure
DellEMC(conf)#track reachability refresh 20
For example, consider that the next-hop address is changed and the track reachability is checked after the set refresh interval (20
seconds). If the reachability to the next-hop address is failed, the system displays the following log stating that the track object state is
changed from UP to DOWN.
Sep 28 11:08:57 %STKUNIT1-M:CP %OTM-6-STATE: Object 2 state transition from Up to Down.
Object Tracking
603