jamesmpoplar Mon, 09/10/2007 - 07:01
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You could have your switchport just shutdown if it sees more than one MAC, for instance:


interface FastEthernet0/2

switchport mode access

switchport port-security

switchport port-security violation shutdown

spanning-tree portfast

spanning-tree bpduguard enable


And for good measure, the end makes sure that if there is any STP traffic, it blocks it as well.

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