Dell C9000 Series Networking Configuration Manual page 984

• 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.
Configure Login Authentication for Terminal Lines
You can assign up to five authentication methods to a method list. The system evaluates the methods in the
order in which you enter them in each list.
If the first method list does not respond or returns an error, the system applies the next method list until the
user either passes or fails the authentication. If the user fails a method list, the system does not apply the next
method list.
Configuring AAA Authentication Login Methods
To configure 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 verified. 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 Define 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 defined 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 configure the enable
sha256-password command, it overrules both the enable secret and enable password
commands.
• line: use the password you defined using the password command in LINE mode.
• local: use the username/password database defined in the local configuration.
• none: no authentication.
• radius: use the RADIUS servers configured with the radius-server host command.
• tacacs+: use the TACACS+ servers configured with the tacacs-server host command.
2 Enter LINE mode.
CONFIGURATION mode
line {aux 0 | console 0 | vty number [... end-number]}
3 Assign a method-list-name or the default list to the terminal line.
LINE mode
login authentication {method-list-name | default}
To view the configuration, use the show config command in LINE mode or the show running-config in
EXEC Privilege mode.
Security 984