Cisco Catalyst 4500 Series Command Reference Manual page 184

clear port-security
This example shows how to remove all the dynamic secure addresses learned on a specific interface:
Switch# clear port-security dynamic interface gigabitethernet0/1
You can verify that the information was deleted by entering the show port-security command.
Related Commands Command
show port-security
switchport port-security
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Description
Displays information about the port-security setting.
Enables port security on an interface.
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