I have connected one D-link & 3Com switches to cisco Switch WS-3650-48PS having IOS version 03.07.02E.
But link is not coming up.
%PM-4-ERR_DISABLE: psecure-violation error detected on Gi1/0/32, putting Gi1/0/32 in err-disable state
%PORT_SECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 78e3.b5c9.0b9a on port GigabitEthernet1/0/32.
Pls suggest how to fix asap.