NOTE: If a console user logs in with RADIUS authentication, the privilege level is applied from the RADIUS server if the privilegelevel is configured for that user in RADIUS, whether you configure RADIUS authorization.NOTE: RADIUS and TACACS servers support VRF-awareness functionality. You can create RADIUS and TACACS groups andthen map multiple servers to a group. The group to which you map multiple servers is bound to a single VRF.Configuration Task List for AAA AuthenticationThe following sections provide the configuration tasks.• Configuring AAA Authentication Login Methods• Enabling AAA Authentication• Enabling AAA Authentication - RADIUSFor a complete list of all commands related to login authentication, refer to the Security chapter in the Dell Networking OS CommandReference Guide.Configure Login Authentication for Terminal LinesYou can assign up to five authentication methods to a method list. Dell Networking OS evaluates the methods in the order in which youenter them in each list.If the first method list does not respond or returns an error, Dell Networking OS applies the next method list until the user either passes orfails the authentication. If the user fails a method list, Dell Networking OS does not apply the next method list.Configuring AAA Authentication Login MethodsTo 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 preventsaccess to these servers.1 Define an authentication method-list (method-list-name) or specify the default.CONFIGURATION modeaaa 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-passwordcommand 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 passwordcommands.• 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 modeline {aux 0 | console 0 | vty number [... end-number]}Security 795
