Dot1X Control-Direction - Cisco Catalyst 4500 Series Command Reference Manual

Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches

dot1x control-direction

To enable unidirectional port control on a per-port basis on a switch, use the dot1x control-direction
command. Use the no form of this command to disable unidirectional port control.
Syntax Description
in
both
Defaults Both in-bound and out-bound traffic will be controlled.
Command Modes
Interface configuration mode
Command History Release
12.2(31)SG
Usage Guidelines You can manage remote systems using unidirectional control. Unidirectional control enables you to turn
on systems remotely using a specific Ethernet packet, known as a magic packet.
Using unidirectional control enables you to remotely manage systems using 802.1X ports. In the past,
the port became unauthorized after the systems was turned off. In this state, the port only allowed the
receipt and transmission of EAPoL packets. Therefore, there was no way for the unidirectional control
magic packet to reach the host and without being turned on there was no way for the system to
authenticate and open the port.
Examples
This example shows how to enable unidirectional control on incoming packets:
Switch(config-if)# dot1x control-direction in
Switch(config-if)#
Related Commands Command
show dot1x
OL-25342 -01
dot1x control-direction [in | both]
no dot1x control-direction
(Optional) Specifies controlling in-bound traffic on a port.
(Optional) Specifies controlling both in-bound and out-bound traffic on a
port.
Modification
Support for this command was introduced on the Catalyst 4500 series switch.
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0SG and IOS 15.1(1)SG)
Description
Displays dot1x information.
dot1x control-direction
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