Port MAC security configuration guidelines and considerations

Note the following guidelines and restrictions for configuring port security:

• A port mode change is not allowed when port security is enabled on the interface.
• If a port-security-based change occurs when a port is shut down, the shutdown timer is not triggered. Consequently, the user must restore the full functionality of the port.
• When port security causes a port to be shut down and the user manually changes the shutdown time, the shutdown timer is reset and the timer starts with the new shutdown time.
• Static MAC addresses cannot be configured on a secure port. They must be configured as secure MAC addresses on the secure port.