Dell PowerConnect 8100 CLI Reference Guide - Page 247

User Guidelines A maximum of five authorization method lists may be created for command types. Command authorization attempts authorization for all EXEC mode commands associated with a privilege level, including global configuration commands. Exec authorization attempts authorization when a user attempts to enter Privileged EXEC mode. If multiple authorization methods are listed, the switch will attempt communication with each method in order, until successful communication is established or all methods in the list have been tried. If authorization fails, then the command is denied and no further attempts at authorization are made for the user request. The various utility commands like tftp, ping, outbound telnet also must pass command authorization. Applying a script is treated as a single command apply script which also must pass authorization. Startup-config commands applied on device boot-up are not subject to the authorization process. Method Local TACACS None Radius Notes The local method is not supported for authorization. This method is equivalent to selecting the none method. Only TACACS is supported for command authorization. Selecting the none method authorizes all commands. The radius method is only valid for EXEC authorization. Command authorization with RADIUS will work if and only if the applied authentication method is also radius. aaa authorization network default radius Use the aaa authorization network default radius command in Global Configuration mode to enable the switch to accept VLAN assignment by the RADIUS server. Syntax aaa authorization network default radius no aaa authorization network default radius AAA Commands 247