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IFPORT(8)                   System Manager's Manual                  IFPORT(8)

       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 dis-
       played.  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 set-
       tings, or report ``Operation not supported''.  Most modern  10/100baseT
       cards  use  a ``Media Independent Interface'' (MII) chip that automati-
       cally selects between 10baseT and 100baseT modes; this sort  of  trans-
       ceiver 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 trans-
              ceiver.  Or the card may have an MII interface.

       David Hinds - dahindsATusers.net

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

pcmcia-cs                     2002/05/06 05:31:51                    IFPORT(8)