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Catalyst 2950 Desktop Switch Software Configuration Guide
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Chapter 7      Administering the Switch
Controlling Switch Access with RADIUS
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
aaa new-model Enable AAA.
Step 3
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 keyword 
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:
–
enable—Use the enable password for authentication. Before you 
can use this authentication method, you must define an enable 
password by using the enable password global configuration 
command.
–
group radius—Use RADIUS authentication. Before you can use 
this authentication method, you must configure the RADIUS 
server. For more information, see the “Identifying the RADIUS 
Server Host” section on page 7-20.
–
line—Use the line password for authentication. Before you can 
use this authentication method, you must define a line password. 
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 name password global configuration command.
–
local-case—Use a case-sensitive local username database for 
authentication. You must enter username information in the 
database by using the username password global configuration 
command.
–
none—Do not use any authentication for login.
Step 4
line [console | tty | vty] line-number 
[ending-line-number]
Enter line configuration mode, and configure the lines to which you want 
to apply the authentication list.
Step 5
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.
Step 6
end Return to privileged EXEC mode.
Step 7
show running-config Verify your entries.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.