swicth summit extreme plus static permanent arp table

[Arjuna Scagnetto <arjuna () ts infn it>]

Hi guys,

can someone tell me how to stop the switch, a summit extreme 400-48t, 
from learning new mac-address.

i've tried

conf port etc etc lock-learning
crete fdbentry <IP> <MAC> port <port>
disable learning port <PORT>

but the mitm arppoisoning attack is still permitted!!

it has one static entry a during the attack a new dymanic antry is added

Thanks to everyone
Arjuna