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Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 12 Configuring IEEE 802.1x Port-Based Authentication
Configuring 802.1x Authentication
Configuring 802.1x Violation Modes
You can configure an 802.1x port so that it shuts down, generates a syslog error, or discards packets from
a new device when:
•
a device connects to an 802.1x-enable port
•
the maximum number of allowed about devices have been authenticated on the port
Beginning in privileged EXEC mode, follow these steps to configure the security violation actions on
the switch:
Configuring 802.1x Authentication
To configure 802.1x port-based authentication, you must enable authentication, authorization, and
accounting (AAA) and specify the authentication method list. A method list describes the sequence and
authentication method to be queried to authenticate a user.
To allow VLAN assignment, you must enable AAA authorization to configure the switch for all
network-related service requests.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
aaa new-model
Enable AAA.
Step 3
aaa authentication dot1x
{
default
}
method1
Create an 802.1x authentication method list.
To create a default list to use when a named list is
not
specified in the
authentication
command, use the
default
keyword followed by the
method that is to be used in default situations. The default method list is
automatically applied to all ports.
For
method1
, enter the
group radius
keywords to use the list of all
RADIUS servers for authentication.
Note
Though other keywords are visible in the command-line help
string, only the
group radius
keywords are supported.
Step 4
interface
interface-id
Specify the port connected to the client that is to be enabled for 802.1x
authentication, and enter interface configuration mode.
Step 5
switchport mode access
Set the port to access mode.
Step 6
authentication violation shutdown
|
restrict
|
protect
}
or
dot1x violation-mode
{
shutdown
|
restrict
|
protect
}
Configure the violation mode. The keywords have these meanings:
•
shutdown
–Error disable the port.
•
restrict
–Generate a syslog error.
•
protect
–Drop packets from any new device that sends traffic to the
port.
Step 7
end
Return to privileged EXEC mode.
Step 8
show authentication
or
show dot1x
Verify your entries.
Step 9
copy running-config startup-config
(Optional) Save your entries in the configuration file.
