Port-Security
NOTE:
If 802.1X port-access is configured on a given
port, then port-security learn-mode for that port
must be set to either continuous (the default)
or port-access.
In addition to the above, to use port-security
on an authenticator port, use the per-port client-limit option
to control how many MAC addresses of 802.1X-authenticated devices
the port is allowed to learn. (Using client-limit sets
802.1X to user-based operation on the specified ports.) When this
limit is reached, no further devices can be authenticated until a
currently authenticated device disconnects and the current delay period
or logoff period has expired.