You can use port security to restrict any port down to as few as 1 MAC address.
If you have port security on, and someone unplugs their PC (whose MAC address has been "learned" as secure by the switch) and connects a hub, as soon as ANY frame from another MAC is detected, the port will shut down. So you have to be sure you're not causing a support nightmare for yourself when you use this. Mike W. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=39672&t=39457 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]