Port-Security function on Catalyst 3548

[thomasl]

I have one Catalyst 3548 and plan to limite user can connect to it only one user per time. I turn on port-security function on these interfaces. If I connect my NoteBook A to interface F0/1, 3548 will learn MAC-A address and add configuraiton into 3548 as follow:

mac-address-table secure 0009.6bbf.2e22 FastEthernet0/47,vlan 1

When I move it out and connect NoteBook B to interface F0/1. The 3548 will not release NoteBook B's MAC-address until MAC-address age time-out. During this time, NoteBook B unable to access network.If I replace it with Catalyst 2950, there is not this problem.

Does anyone know how to configure then I can reach the same function as Catalyst 2950 do. Thanks.

[pedroquiroga]

Hi, you can try configuring an aging time on the port.

Use this command (in an ios switch):

switchport port-security aging time (time in minutes).

By this way the switch will remove the secure mac address without manual intervention,

Regards