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.
NOTE:
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.