Pull network cable? Pfthah! We disable the port at the switch...
SW1(config)#int Fa0/1
SW1(config-if)#shutdown
1w4d: %LINK-5-CHANGED: Interface FastEthernet0/1, changed state to administratively down
1w4d: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1 changed state to down