Hi Pratik, If you run the following command it will show you the actual MAC addresses learned on the port - this might tell you what's going on. #show port-security interface gi 0/27 addressCheersStephen

Hi Pratik, If you want to tie the ports down to only the laptop and phone then I would recommend the following. Configure port security for sticky MAC addresses - #switchport port-security mac-address stickySet a maximum of two allowed MAC addresses ...

Hi Pratik, I think Conor has got it nailed. When the "switchport port-security mac-address sticky" command is used, then all MAC addresses dynamically learned on that port are added to the running configuration. As a result, if two old MAC addresses ...