Dell C9000 Series Networking Configuration Manual page 970

1 Locally define 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 Configure login authentication on the console. This ensures that all users are properly identified through
authentication no matter the access point.
If you do not configure 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 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
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