Chapter 9 Configuring Switch-Based Authentication

Controlling Switch Access with TACACS+

 

Command

Purpose

Step 3

 

 

aaa authentication login {default

Create a login authentication method list.

 

list-name}method1 [method2...]

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 ports.

 

 

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 tacacs+—Uses TACACS+ authentication. Before you can use

 

 

this authentication method, you must configure the TACACS+ server.

 

 

For more information, see the “Identifying the TACACS+ Server

 

 

Host and Setting the Authentication Key” section on page 9-13.

 

 

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

 

 

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 name password global configuration

 

 

command.

 

 

none—Do not use any authentication for login.

 

 

 

Step 4 line [console tty vty] line-number

Enter line configuration mode, and configure the lines to which you want

 

[ending-line-number]

to apply the authentication list.

Step 5

 

 

login authentication {default

Apply the authentication list to a line or set of lines.

 

list-name}

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.

 

 

 

To disable AAA, use the no aaa new-modelglobal configuration command. To disable AAA authentication, use the no aaa authentication login {default list-name} method1 [method2...] global configuration command. To either disable TACACS+ authentication for logins or to return to the default value, use the no login authentication {default list-name} line configuration command.

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

 

OL-9775-02

9-15

 

 

 

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Cisco Systems 3750E manual Aaa authentication login default, Line console tty vty line-number, Login authentication default