Administrator Guide

using the aaa authorization role-only command in Conguration mode, the Dell Networking OS checks to ensure that you do not
lock yourself out and that the user authentication is available for all terminal lines.
Pre-requisites
Before you enable role-based only AAA authorization:
1. Locally dene a system administrator user role. This will give you access to login with full permissions even if network
connectivity to remote authentication servers is not available.
2. Congure login authentication on the console. This ensures that all users are properly identied through authentication no
matter the access point.
If you do not congure login the authentication on the console, the system displays an error when you attempt to enable role-
based only AAA authorization.
3. Specify an authentication method list (RADIUS, TACACS+, or Local).
You must specify at least local authentication. For consistency, the best practice is to dene 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 congure the authentication method list in the following order (TACACS+, local), Dell Networking recommends
that authorization method list is congured 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 dene 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 conguration 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-Dened RBAC User Roles
By default, the Dell Networking OS provides 4 system dened user roles. You can create up to 8 additional user roles.
NOTE: You cannot delete any system dened roles.
702
Security