CLI Guide

Layer 2 Switching Commands 554
Command History
Command introduced in version 6.6.0 firmware.
Example
This example globally enables IPDT and sets the missed probe count to 6.
console(config)#ip device tracking
console(config)#ip device tracking probe count 6
ip device tracking probe delay
Use the ip device tracking probe delay command to configure the time to
wait after a link up event before sending an ARP probe. Use the no form of
the command to set the missed count to the default.
Syntax
ip device tracking probe delay seconds
no ip device tracking probe delay
• seconds—The number of seconds to wait before sending an ARP probe
when a port transitions from a non-forwarding state to a forwarding state.
The range is 1 to 255 seconds.
Default Configuration
The default transition delay is 30 seconds.
Command Mode
Global Configuration mode
User Guidelines
Reducing the delay allows IPDT to discover devices more quickly. Reducing
the delay to too small of a value may cause IPDT to query a device during the
quiet period after the host has sent a gratuitous ARP. The ARP probe may
confuse the host and require the host interface to be reset. Use of the ip
device tracking probe auto-source fallback may help to ameliorate this issue.
Some network implementations have had good results with the delay set to
around 10 seconds.