NAME¶
txp
—
3Com 3XP Typhoon/Sidewinder (3CR990) Ethernet
interface
SYNOPSIS¶
To compile this driver into the kernel, place the following line in your kernel
configuration file:
device txp
Alternatively, to load the driver as a module at boot time, place the following
line in
loader.conf(5):
DESCRIPTION¶
The
txp
interface provides access to the
10Mb/s and 100Mb/s Ethernet networks via the 3Com Typhoon/Sidewinder chipset.
Basic Ethernet functions are provided as well as support for
vlan(4) tag removal and insertion assistance,
receive
ip(4),
tcp(4), and
udp(4)
checksum offloading, and transmit
ip(4) checksum
offloading. There is currently no support for transmit
tcp(4) or
udp(4)
checksum offloading,
tcp(4) segmentation, nor
ipsec(4) acceleration.
When a
txp
interface is brought up, by
default, it will attempt to auto-negotiate the link speed and duplex mode. The
speeds, in order of attempt, are: 100Mb/s Full Duplex, 100Mb/s Half Duplex, 10
Mb/s Full Duplex, and 10 Mb/s Half Duplex.
The
txp
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
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
HARDWARE¶
The
txp
driver supports the following cards:
- 3Com 3CR990-TX-95
- 3Com 3CR990-TX-97
- 3Com 3cR990B-TXM
- 3Com 3CR990SVR95
- 3Com 3CR990SVR97
- 3Com 3cR990B-SRV
SEE ALSO¶
altq(4),
arp(4),
inet(4),
intro(4),
ip(4),
miibus(4),
tcp(4),
udp(4),
vlan(4),
ifconfig(8)
HISTORY¶
The
txp
driver first appeared in
OpenBSD 2.9.