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Catalyst2950 Desktop Switch Software Configuration Guide
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Chapter8 Configuring 802.1X Port-Based Authentication
Configuring 802.1X Authentication
Enabling 802.1X Authentication
To enable 802.1X port-based authentication, you must enable AAA and specify the authentication
method list. A method list describes the sequence and authentication methods to be queried to
authenticate a user.
The software uses the first method listed to authenticate users; if that method fails to respond, the
software selects the next authentication method in the method list. This process continues until the re is
successful communication with a listed authentication method or until all defined methods are
exhausted. If authentication fails at any point in this cycle, the authentica tion process st ops, and no oth er
authentication methods are attempted.
Beginning in privileged EXEC mode, follow these steps to configure 802.1X port-based authentication .
This procedure is required.
To disable AAA, use the no aaa new-model global configuration command. To disable 802.1X AAA
authentication, use the no aaa authentication dot1x {default | list-name} method1 [method2...] global
configuration command. To disable 802.1X authentication, use the dot1x port-control
force-authorized or the no dot1x port-control interface configuration command.
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 aaa new-model Enable AAA.
Step3 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 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.
Step4 interface interface-id Enter interface configuration mode, and specif y the interfac e connected to
the client that is to be enabled for 802.1X authentication.
Step5 dot1x port-control auto Enable 802.1X authentication on the interface.
For feature interaction information with trunk, dynamic, dynamic-access,
EtherChannel, secure, and SPAN ports, see the “802.1X Configuration
Guidelines” section on page8-7.
Step6 end Return to privileged EXEC mode.
Step7 show dot1x Verify your entries.
Check the Status column in the 802.1X Port Summary section of the
display. An enabled status means the port-control value is set either to
auto or to force-unauthorized.
Step8 copy running-config startup-config (Optional) Save your entries in the configuration file.