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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 69 Configuring Enhanced Object Tracking
Configuring Enhanced Object Tracking Features
aspects of IP SLAs operation: state and reachability. For state, if the return code is OK, the track state is
up; if the return code is not OK, the track state is down. For reachability, if the return code is OK or
OverThreshold, reachability is up; if not OK, reachability is down.
To track the state of an IP SLAs operation or the reachability of an IP SLAs IP host, perform this task:
This example shows how to configure and display IP SLAs state tracking:
Switch(config)# track 2 200 state
Switch(config)# end
Switch# show track 2
Track 2
Response Time Reporter 1 state
State is Down
1 change, last change 00:00:47
Latest operation return code: over threshold
Latest RTT (millisecs) 4
Tracked by:
HSRP Ethernet0/1 3
This example output shows whether a route is reachable:
Switch(config)# track 3 500 reachability
Switch(config)# end
Switch# show track 3
Track 3
Response Time Reporter 1 reachability
Reachability is Up
1 change, last change 00:00:47
Latest operation return code: over threshold
Latest RTT (millisecs) 4
Tracked by:
HSRP Ethernet0/1 3
Command Purpose
Step 1
configure terminal
Enters global configuration mode.
Step 2
track object-number ip sla
operation-number state
Enters tracking configuration mode to track the state of an IP SLAs
operation.
• The object-number range is from 1 to 500.
• The operation-number range is from 1 to 2147483647.
Step 3
delay {up seconds [down seconds]
| [up seconds] down seconds}
(Optional) Specifies 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
Returns to global configuration mode.
Step 5
track object-number ip sla
operation-number reachability
Enters tracking configuration mode to track the reachability of an IP SLAs
IP host.
• The object-number range is from 1 to 500.
• The operation-number range is from 1 to 2147483647.
Step 6
delay {up seconds [down seconds]
| [up seconds] down seconds}
(Optional) Specifies a period of time in seconds to delay communicating
state changes of a tracked object. The range is from 1 to 180 seconds.
Step 7
end
Returns to privileged EXEC mode.
Step 8
show track object-number
Displays tracking information to verify the configuration.
Step 9
copy running-config
startup-config
(Optional) Saves your entries in the configuration file.
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