Users Guide

Layer 2 Switching Commands 552
Command Mode
Interface (Ethernet or Port-Channel) Configuration mode
User Guidelines
Invoking the normal form of the command (ip device tracking maximum
value) clears all the entries learned on a specified interface and sets the
maximum entries to be learned on that interface. Configuring the maximum
limit to 0 effectively disables IPDT on the interface.
For interfaces with an administrator-specified limit, if the number of entries
on an interface exceeds the configured limit, all entries associated with the
interface are deleted from the table.
Administrators should set the maximum entries to 0 on ports which do not
need to be tracked (inter-switch links, uplinks, …) to reduce CPU load and
avoid overflowing the IPDT table.
Command History
Command introduced in version 6.6.0 firmware.
Example
This example globally enables IPDT and disables IPDT on an uplink
interface.
console(config)#ip device tracking
console(config)#interface te1/0/1
console(config-if-Te1/0/1)#ip device tracking maximum 0
clear ip device tracking
Use the clear ip device tracking command to clear entries present in the
IPDT table.
Syntax
clear ip device tracking {all | interface if-name | ip ipv4-address | mac mac-
address}
• all—Clears the entire IPDT table.
• interface if-name —Clears the entries matching the host ipv4-address.