Enables an fddi station entity which represents an access point to
    the service offered by the FDDI module.

    enable  [node node-id] fddi -
        station station-name [mode mode-type]

    Mode is an optional argument.  The mode-type can be either Normal
    or Internal Loopback.  The default mode-type is Normal.

    Examples:

    enable fddi station fddi-1

    enable fddi station fddi-1 mode internal loopback