Copy Paste from TACCC
Check the switch configuration file in order to find the source of these packets on the specified port and take corrective action in order to fix them at the source end. For example, it can be due to a faulty NIC or connected hub. You can also setup a SPAN session to identify the source.
Alternatively, you can also issue the switchport port-security limit rate invalid-source-mac command in order to enable port security on that interface in order to shutdown the port if the incoming rate of packets with invalid source mac address is too high.
Refer to these TAC Case Collection Cases for more information:
* K03222220
* K52237802
http://www.ciscotaccc.com/kaidara-advisor/lanswitching/showcase?case=K85363289
If you open up a case with TAC you will get a same answer .
So please check the NIC cards on this VMserver . If possible replace it and then check if you face a similar issue .