Dot1X Port-Control - Cisco Catalyst 2960 Command Reference Manual

Chapter 2 Catalyst 2960 Switch Cisco IOS Commands

dot1x port-control

Use the dot1x port-control interface configuration command to enable manual control of the
authorization state of the port. Use the no form of this command to return to the default setting.
Syntax Description
auto
force-authorized
force-unauthorized Deny all access through this port by forcing the port to change to the
Defaults
The default is force-authorized.
Command Modes Interface configuration
Command History Release
12.2(25)FX
Usage Guidelines You must globally enable IEEE 802.1x authentication on the switch by using the dot1x
system-auth-control global configuration command before enabling IEEE 802.1x authentication on a
specific port.
The IEEE 802.1x standard is supported on Layer 2 static-access ports and voice VLAN ports.
You can use the auto keyword only if the port is not configured as one of these:
•
•
•
OL-8604-04
dot1x port-control {auto | force-authorized | force-unauthorized}
no dot1x port-control
Enable IEEE 802.1x authentication on the port and cause the port to change to
the authorized or unauthorized state based on the IEEE 802.1x authentication
exchange between the switch and the client.
Disable IEEE 802.1x authentication on the port and cause the port to transition
to the authorized state without an authentication exchange. The port sends and
receives normal traffic without IEEE 802.1x-based authentication of the client.
unauthorized state, ignoring all attempts by the client to authenticate. The
switch cannot provide authentication services to the client through the port.
Modification
This command was introduced.
Trunk port—If you try to enable IEEE 802.1x authentication on a trunk port, an error message
appears, and IEEE 802.1x is not enabled. If you try to change the mode of an IEEE 802.1x-enabled
port to trunk, an error message appears, and the port mode is not changed.
Dynamic ports—A port in dynamic mode can negotiate with its neighbor to become a trunk port. If
you try to enable IEEE 802.1x authentication on a dynamic port, an error message appears, and
IEEE 802.1x authentication is not enabled. If you try to change the mode of an IEEE 802.1x-enabled
port to dynamic, an error message appears, and the port mode is not changed.
Dynamic-access ports—If you try to enable IEEE 802.1x authentication on a dynamic-access
(VLAN Query Protocol [VQP]) port, an error message appears, and IEEE 802.1x authentication is
not enabled. If you try to change an IEEE 802.1x-enabled port to dynamic VLAN assignment, an
error message appears, and the VLAN configuration is not changed.
Catalyst 2960 Switch Command Reference
dot1x port-control
2-91