Provided by: pcmcia-cs_3.2.8-5.2ubuntu5_i386 bug


       ifport - select the transceiver type for a network interface


       ifport interface [auto|10baseT|10base2|aui|100baseT|##]


       Ifport  sets  the transceiver type for the specified network interface,
       for drivers that support multiple independent transceivers.  If a  type
       is  not   specified  on  the  command  line,  then  the current type is
       displayed.  The type can be specified either numerically or by keyword.
       The  five  standard transceiver types (auto, 10baseT, 10base2, aui, and
       100baseT) correspond to codes 0 to 3, for all the Linux PCMCIA  network
       drivers.  The keyword match is case insensitive.

       The  network  drivers  may not reconfigure a card for a new transceiver
       type if the interface is already open.  It is  best  to  invoke  ifport
       prior to configuring the interface with ifconfig to ensure that the new
       setting takes effect immediately.

       This utility only works with a limited set of 16-bit PC  Card  drivers:
       3c589_cs,  nmclan_cs,  pcnet_cs,  smc91c92_cs, and xirc2ps_cs.  It also
       only works for certain cards that require manual transceiver selection.
       If  invoked  for  other  drivers,  ifport  may report bogus transceiver
       settings,  or  report  ‘‘Operation  not   supported’’.    Most   modern
       10/100baseT cards use a ‘‘Media Independent Interface’’ (MII) chip that
       automatically selects between 10baseT and 100baseT modes; this sort  of
       transceiver can be manipulated using the mii-tool(8) command.


       ioctl: Operation not supported
              Indicates  that  this  network  device  does  not support manual
              transceiver  selection.   There  may  be  only  one  transceiver
              option,   or   the   device   may   autodetect  the  appropriate
              transceiver.  Or the card may have an MII interface.


       David Hinds -


       ifconfig(8), mii-tool(8).