Provided by: pcmcia-cs_3.2.8-5.2ubuntu5_i386
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 - email@example.com