NAME
gem —
GEM 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:
- Apple GMAC (10/100/1000baseT)
- Sun ERI (10/100baseT)
- Sun GEM (10/100/1000baseT)
- Sun GEM (1000baseSX)
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.