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NOTE: Dell Networking recommends using the none method only as a backup. This method does
not authenticate users. The none and enable methods do not work with secure shell (SSH).
You can create multiple method lists and assign them to different terminal lines.
Enabling AAA Authentication
To enable AAA authentication, use the following command.
• Enable AAA authentication.
CONFIGURATION mode
aaa authentication enable {method-list-name | default} method1 [... method4]
– default: uses the listed authentication methods that follow this argument as the default list of
methods when a user logs in.
– method-list-name: character string used to name the list of enable authentication methods
activated when a user logs in.
– method1 [... method4]: any of the following: RADIUS, TACACS, enable, line, none.
If you do not set the default list, only the local enable is checked. This setting has the same effect as
issuing an aaa authentication enable default enable command.
Enabling AAA Authentication — RADIUS
To enable authentication from the RADIUS server, and use TACACS as a backup, use the following
commands.
1. Enable RADIUS and set up TACACS as backup.
CONFIGURATION mode
aaa authentication enable default radius tacacs
2. Establish a host address and password.
CONFIGURATION mode
radius-server host x.x.x.x key some-password
3. Establish a host address and password.
CONFIGURATION mode
tacacs-server host x.x.x.x key some-password
Examples of Enabling Authentication
To get enable authentication from the RADIUS server and use TACACS as a backup, issue the
following commands.
Dell(config)# aaa authentication enable default radius tacacs
Radius and TACACS server has to be properly setup for this.
Dell(config)# radius-server host x.x.x.x key <some-password>
Dell(config)# tacacs-server host x.x.x.x key <some-password>
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