Hello,
I used Cisco Switches 2960 and 3560 as access switches, port security enabled, HSRP configure in Core Switches, everything work normally, but I faced problem when change port security maximum feature, port security violation occured by HSRP Virtual MAC Address 0000.0c07.ac00 that caused DoS where all network traffic in switch go to wrong port (in the same switch instead of trunk to Core Switche), I configured HSRP MD5 Authentication but the problem still happened.
so kindly, what is the reason and solution?
best regards,
