6-24
Catalyst 3550 Multilayer Switch Software Configuration Guide
78-11194-03
Chapter6 Administering the Switch
Controlling Switch Access with RADIUS
To disable AAA, use the no aaa new-model global configuration command. To disable AAA
authentication, use the no aaa authentication login {default | list-name} method1 [method2...] global
configuration command. To either disable RADIUS authentication for login s or to re turn t o the de faul t
value, use the no login authentication {default | list-name} line configuration command.
Defining AAA Server Groups
You can configure the switch to use AAA server g roups to gr oup existing se rver hosts for authentic ation.
You select a subset of the configured s erver hos ts and use t hem fo r a partic ular ser vice. The s erver gr oup
is used with a global server-host list, which lists the IP addresses of the selected server hosts.
Step3 aaa authentication login {default |
list-name} method1 [method2...]Create a login authentication method list.
•To create a default list that is used when a named list is not specified
in the login authentication command, use the default key word
followed by the methods that are to be used in default situations. The
default method list is automatically applied to all interfaces.
•For list-name, specify a character string to name the list you are
creating.
•For method1..., specify the actual method the authentication
algorithm tries. The additional methods of authentication are used
only if the previous method returns an error, not if it fails.
Select one of these methods:
•line—Use the line password for authentication. You must define a
line password before you can use this authentication method. Use the
password password line configuration command.
•local—Use the local username database for authentication. You must
enter username information in the database. Use the username
password global configuration command.
•radius—Use RADIUS authentication. You must configure the
RADIUS server before you can use this authentication meth od. Fo r
more information, see the “Identifying the RADIUS Server Host”
section on page 6-20.
Step4 line [console | tty | vty] line-number
[ending-line-number]Enter line configuration mode, and configure the lines t o which you want
to apply the authentication list.
Step5 login authentication {default |
list-name}Apply the authentication list to a line or set of lines.
•If you specify default, use the default list created with the aaa
authentication login command.
•For list-name, specify the list created with the aaa authentication
login command.
Step6 end Return to privileged EXEC mode.
Step7 show running-config Verify your entries.
Step8 copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose