10-14
Catalyst 3750 Switch Software Configuration Guide
78-16180-02
Chapter 10 Configuring 802.1x Port-Based Authentication
Configuring 802.1x Authentication
Step 3 VLAN assignment is enabled, as appropriate, based on the RADIUS server configuration.
Step 4 The switch sends a start message to an accounting server.
Step 5 Re-authentication is performed, as necessary.
Step 6 The switch sends an interim accounting update to the accounting server that is based on the result of
re-authentication.
Step 7 The user disconnects from the port.
Step 8 The switch sends a stop message to the accounting server.
Beginning in privileged EXEC mode, follow these steps to configure 802.1x port-based authentication:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
aaa new-model Enable AAA.
Step 3
aaa authentication dot1x {default}
method1 [method2...]
Create an 802.1x 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 ports.
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.
Step 4
dot1x system-auth-control Enable 802.1x authentication globally on the switch.
Step 5
aaa authorization network {default}
group radius
(Optional) Configure the switch for user RADIUS authorization for all
network-related service requests, such as per-user ACLs or VLAN
assignment.
Note For per-user ACLs, single-host mode must be configured. This
setting is the default.
Step 6
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 7
dot1x port-control auto Enable 802.1x authentication on the port.
For feature interaction information, see the “802.1x Configuration
Guidelines” section on page 10-12.
Step 8
end Return to privileged EXEC mode.
Step 9
show dot1x Verify your entries.
Step 10
copy running-config startup-config (Optional) Save your entries in the configuration file.
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