our client have a c3750-stack by using the stack-wise cable,, there is 6 c3750 stack as 1 switch. we enable the port-security in all the ports for user. the problem is the port random erri-diabled by the mac-address. this mac-address actully learn from another port. for example, f2/0/24 is erri-disable,casue this is by aaaa.aaaa.aaaa,, and this mac-address actully learned from f5/0/43.
after I sh/no-sh the port ,, the port is back to normal.but few hours later,, this thing happened again , and this time ,it is another 2 port involved in.
need help from you guys