Administrator Guide
NOTE: If a console user logs in with RADIUS authentication, the privilege level is applied from the RADIUS server if the privilege
level is congured for that user in RADIUS, whether you congure RADIUS authorization.
NOTE: RADIUS and TACACS servers support VRF-awareness functionality. You can create RADIUS and TACACS groups and
then map multiple servers to a group. The group to which you map multiple servers is bound to a single VRF.
Conguration Task List for AAA Authentication
The following sections provide the conguration tasks.
• Conguring AAA Authentication Login Methods
• Enabling AAA Authentication
• Enabling AAA Authentication - RADIUS
For a complete list of all commands related to login authentication, refer to the Security chapter in the Dell Networking OS Command
Reference Guide.
Congure Login Authentication for Terminal Lines
You can assign up to ve authentication methods to a method list. Dell Networking OS evaluates the methods in the order in which you
enter them in each list.
If the rst method list does not respond or returns an error, Dell Networking OS applies the next method list until the user either passes or
fails the authentication. If the user fails a method list, Dell Networking OS does not apply the next method list.
Conguring AAA Authentication Login Methods
To congure an authentication method and method list, use the following commands.
Dell Networking OS Behavior: If you use a method list on the console port in which RADIUS or TACACS is the last authentication method,
and the server is not reachable, Dell Networking OS allows access even though the username and password credentials cannot be veried.
Only the console port behaves this way, and does so to ensure that users are not locked out of the system if network-wide issue prevents
access to these servers.
1 Dene an authentication method-list (method-list-name) or specify the default.
CONFIGURATION mode
aaa authentication login {method-list-name | default} method1 [... method4]
The default method-list is applied to all terminal lines.
Possible methods are:
• enable: use the password you dened using the enable secret, enable password, or enable sha256-password
command in CONFIGURATION mode. In general, the enable secret command overrules the enable password command.
If you congure the enable sha256-password command, it overrules both the enable secret and enable password
commands.
• line: use the password you dened using the password command in LINE mode.
• local: use the username/password database dened in the local conguration.
• none: no authentication.
• radius: use the RADIUS servers congured with the radius-server host command.
• tacacs+: use the TACACS+ servers congured with the tacacs-server host command.
2 Enter LINE mode.
CONFIGURATION mode
line {aux 0 | console 0 | vty number [... end-number]}
Security
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