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GEM(4) Device Drivers Manual GEM(4)

NAME

gemGEM 10/100/Gigabit Ethernet device

SYNOPSIS

gem* at pci?
gem* at sbus?
bmtphy* at mii?
brgphy* at mii?
eephy* at mii?
gentbi* at mii?
luphy* at mii?
lxtphy* at mii?

DESCRIPTION

The gem driver provides support for various NICs based on the GEM Ethernet controller chips, including the following:
It uses an external PHY or an external 10-bit interface.
The gem driver supports several media types, which are selected via the ifconfig(8) command. The supported media types are:
 
 
media autoselect
Attempt to autoselect the media type (default)
 
 
media 1000baseT mediaopt full-duplex
Use 1000baseT on copper, full duplex
 
 
media 1000baseT [mediaopt half-duplex]
Use 1000baseT on copper, half duplex
 
 
media 1000baseSX mediaopt full-duplex
Use 1000baseSX on fiber, full duplex
 
 
media 1000baseSX [mediaopt half-duplex]
Use 1000baseSX on fiber, half duplex
 
 
media 100baseTX mediaopt full-duplex
Use 100baseTX, full duplex
 
 
media 100baseTX [mediaopt half-duplex]
Use 100baseTX, half duplex
 
 
media 10baseT mediaopt full-duplex
Use 10baseT, full duplex
 
 
media 10baseT [mediaopt half-duplex]
Use 10baseT, half duplex

SEE ALSO

arp(4), bmtphy(4), brgphy(4), eephy(4), gentbi(4), ifmedia(4), inet(4), intro(4), luphy(4), lxtphy(4), netintro(4), hostname.if(5), ifconfig(8)

HISTORY

OpenBSD support for gem first appeared in OpenBSD 3.0.
October 14, 2008 OpenBSD-current