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GEM(4) Device Drivers Manual GEM(4)

GEM 10/100/Gigabit Ethernet device

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

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

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)

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