This command is available to Administrators and Operators.
defaultrole - This is the role, either Administrator or Operator, that is assigned to all RADIUS users.
ipaddress - IP Address of your RADIUS server.
port - Port number used to communicate with your RADIUS server. The default port is 1812.
secret - enter the shared secret used to gain access to your RADIUS server.
state - Choose enabled or disabled to allow or deny access to your RADIUS users.