Brocade FastIron Ethernet Switch Security Configuration Guide - Manual (Page 191)

Enabling 802.1X port security
By default, 802.1X port security is disabled on Brocade devices. To enable the feature on the device
and enter the dot1x configuration level, enter the following command.
device(config)#dot1x-enable
device(config-dot1x)#
Syntax: [no] dot1x-enable
At the dot1x configuration level, you can enable 802.1X port security on all interfaces at once, on
individual interfaces, or on a range of interfaces.
For example, to enable 802.1X port security on all interfaces on the device, enter the following
command.
device(config-dot1x)#enable all
Syntax: [no] enable all
To enable 802.1X port security on interface 3/11, enter the following command.
device(config-dot1x)#enable ethernet 3/11
Syntax: [no] enable ethernet port
To enable 802.1X port security on interfaces 3/11 through 3/16, enter the following command.
device(config-dot1x)#enable ethernet 3/11 to 3/16
Syntax: [no] enable ethernet port to port
Setting the port control
To activate authentication on an 802.1X-enabled interface, you specify the kind of port control to be
used on the interface. An interface used with 802.1X port security has two virtual access points: a
controlled port and an uncontrolled port:
• The controlled port can be either the authorized or unauthorized state. In the authorized state, it
allows normal traffic to pass between the Client and the Authenticator. In the unauthorized state, no
traffic is allowed to pass.
• The uncontrolled port allows only EAPOL traffic between the Client and the Authentication Server.
Refer to the Controlled and uncontrolled ports before and after client authentication figure for an
illustration of this concept.
By default, all controlled ports on the device are in the authorized state, allowing all traffic. When you
activate authentication on an 802.1X-enabled interface, its controlled port is placed in the unauthorized
state. When a Client connected to the interface is successfully authenticated, the controlled port is then
placed in the authorized state. The controlled port remains in the authorized state until the Client logs
off.
To activate authentication on an 802.1X-enabled interface, you configure the interface to place its
controlled port in the authorized state when a Client is authenticated by an Authentication Server. To do
this, enter commands such as the following.
device(config)#interface e 3/1
device(config-if-3/1)#dot1x port-control auto
Syntax: no dot1x port-control [ force-authorized | force-unauthorized | auto ]
Enabling 802.1X port security
FastIron Ethernet Switch Security Configuration Guide 191
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