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Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 40 Configuring 802.1X Port-Based Authentication Configuring 802.1X Port-Based Authentication
Note To allow VLAN assignment, you must enable AAA authorization to configure the switch for all
network-related service requests.
To configure 802.1X port-based authentication, perform this task:
Command Purpose
Step 1 Switch# configure terminal Enters global configuration mode.
Step 2 Switch(config)#
dot1x system-auth-control Enables 802.1X on your switch.
To disable 802.1X globally on the switch, use the
no dot1x system-auth-control command.
Step 3 Switch(config)# aaa new-model Enables AAA.
To disable AAA, use the no aaa new-model command.
Step 4 Switch(config)# aaa authentication
dot1x {default} method1 [method2...] Creates an 802.1X AAA authentication method list.
To create a default list that is used when a named list is not specified in
the authentication command, use the default keyword followed by the
methods that are to be used in default situations. The default method list
is automatically applied to all interfaces.
Enter at least one of these keywords:
• group radius—Use the list of all RADIUS servers for authentication.
• none—Use no authentication. The client is automatically
authenticated by the switch without using the information supplied by
the client.
To disable 802.1X AAA authentication, use the
no aaa authentication dot1x {default | list-name} method1 [method2...]
global configuration command.
Step 5 Switch(config)# aaa authorization
network {default} group radius (Optional) Configures the switch for user RADIUS authorization for all
network-related service requests, such as VLAN assignment.
Step 6 Switch(config)# interface
interface-id Enters interface configuration mode and specifies the interface to be
enabled for 802.1X authentication.
Step 7 Switch(config-if)# switchport mode
access Specifies a nontrunking, nontagged single VLAN Layer 2 interface.
Step 8 Switch(config-if)# dot1x pae
authenticator Enables 802.1X authentication on the port with default parameters.
Refer to the “Default 802.1X Configuration” section on page 40-27.
Step 9 Cisco IOS Release 12.2(50)SG and later
Switch(config-if)# authentication
port-control auto
Cisco IOS Release 12.2(46)SG or earlier
releases
Switch(config-if)# dot1x
port-control auto
Enables 802.1X authentication on the interface.
Step 10 Switch(config-if)# end Returns to privileged EXEC mode.