Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 826

You must specify at least local authentication. For consistency, the best practice is to define the same authentication method list across all lines, in the same order of comparison; for example VTY and console port. You could also use the default authentication method to apply to all the LINES (console port, VTY). NOTE: The authentication method list should be in the same order as the authorization method list. For example, if you configure the authentication method list in the following order (TACACS+, local), Dell Networking recommends that authorization method list is configured in the same order (TACACS+, local). 4. Specify authorization method list (RADIUS, TACACS+, or Local). You must at least specify local authorization. For consistency, the best practice is to define the same authorization method list across all lines, in the same order of comparison; for example VTY and console port. You could also use the default authorization method list to apply to all the LINES (console port, VTY). If you do not, the following error is displayed when you attempt to enable role-based only AAA authorization. % Error: Exec authorization must be applied to more than one line to be useful, e.g. console and vty lines. Could use default authorization method list as alternative. 5. Verify the configuration has been applied to the console or VTY line. Dell (conf)#do show running-config line ! line console 0 login authentication test authorization exec test exec-timeout 0 0 line vty 0 login authentication test authorization exec test line vty 1 login authentication test authorization exec test To enable role-based only AAA authorization: Dell(conf)#aaa authorization role-only System-Defined RBAC User Roles By default, the Dell Networking OS provides 4 system defined user roles. You can create up to 8 additional user roles. NOTE: You cannot delete any system defined roles. The system defined user roles are as follows: • Network Operator (netoperator) - This user role has no privilege to modify any configuration on the switch. You can access Exec mode (monitoring) to view the current configuration and status information. • Network Administrator (netadmin): This user role can configure, display, and debug the network operations on the switch. You can access all of the commands that are available from the network 826 Security