Defining Aaa Server Groups - Cisco Catalyst 3750 Software Configuration Manual

Metro switch

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Configuring Switch-Based Authentication

show running-config

copy running-config startup-config

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 logins or to return to the default

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 groups to group existing server hosts for authentication.

You select a subset of the configured server hosts and use them for a particular service. The server group

is used with a global server-host list, which lists the IP addresses of the selected server hosts.

Server groups also can include multiple host entries for the same server if each entry has a unique

identifier (the combination of the IP address and UDP port number), allowing different ports to be

individually defined as RADIUS hosts providing a specific AAA service. If you configure two different

host entries on the same RADIUS server for the same service, (for example, accounting), the second

configured host entry acts as a fail-over backup to the first one.

You use the server group server configuration command to associate a particular server with a defined

group server. You can either identify the server by its IP address or identify multiple host instances or

entries by using the optional auth-port and acct-port keywords.

Beginning in privileged EXEC mode, follow these steps to define the AAA server group and associate a

particular RADIUS server with it:

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

Return to privileged EXEC mode.

Verify your entries.

(Optional) Save your entries in the configuration file.

Catalyst 3750 Metro Switch Software Configuration Guide

Controlling Switch Access with RADIUS