NGE(4)

NAME
nge - National Semiconductor PCI 10/100/Gigabit Ethernet device

SYNOPSIS
nge* at pci?
nsgphy* at mii?

DESCRIPTION
The nge driver provides support for various NICs based on the National Semiconductor DP83820 and DP83821 Gigabit Ethernet controller chips, including the following:

•   Addtron AEG320T
•   Ark PC SOHO-GA2500T (32-bit PCI) and SOHO-GA2000T (64-bit PCI)
•   Asante FriendlyNet GigaNIX 1000TA and 1000TPC
•   D-Link DGE-500T
•   Linksys EG1032v1 (32-bit PCI) and EG1064v1 (64-bit PCI)
•   Netgear GA621
•   Netgear GA622T
•   SMC EZ Card 1000 (SMC9462TX)
•   Surecom Technology EP-320G-TX
•   TRENDnet TEG-PCITX (32-bit PCI) and TEG-PCITX2 (64-bit PCI)

The nge driver supports IPv4 receive IP/TCP/UDP checksum offload, VLAN tag insertion and stripping, as well as a 2048-bit multicast hash filter and up to 4 pattern match buffers.

The nge driver also supports Jumbo frames, which can be configured via the interface MTU setting. Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility configures the adapter to receive and transmit Jumbo frames. Using Jumbo frames can greatly improve performance for certain tasks, such as file transfers and data streaming.

The nge driver supports the following media types:

autoselect
    Enable autoselection of the media type and options. The user can manually override the autoselected mode by adding media options to the appropriate hostname.if(5) file.

10baseT
    Set 10Mbps operation. The ifconfig(8) mediaopt option can also be used to select either full-duplex or half-duplex modes.

100baseTX
    Set 100Mbps (Fast Ethernet) operation. The ifconfig(8) mediaopt option can also be used to select either full-duplex or half-duplex modes.

1000baseT
    Set 1000baseT operation over twisted pair. Both full-duplex and half-duplex modes are supported.

1000baseSX
    Set 1000Mbps (Gigabit Ethernet) operation. Both full-duplex and half-duplex modes are supported.

The nge driver supports the following media options:

full-duplex
    Force full duplex operation.

half-duplex
    Force half duplex operation.

For more information on configuring this device, see ifconfig(8).

SEE ALSO
arp(4), ifmedia(4), intro(4), netintro(4), nsgphy(4), pci(4), hostname.if(5), ifconfig(8) National Semiconductor DP83820 datasheet, http://www.national.com. National Semiconductor DP83861 datasheet, http://www.national.com.

HISTORY
The nge device driver first appeared in OpenBSD 3.0.

AUTHORS
The nge driver was written by Bill Paul <wpaul@bsdi.com>.