VGE(4)

NAME
vge - VIA Velocity 10/100/Gigabit Ethernet device

SYNOPSIS
vge* at pci?
ciphy* at mii?
ipgphy* at mii?

DESCRIPTION
The vge driver provides support for various NICs and embedded Ethernet interfaces based on the VIA Networking Technologies VT6120, VT6122, VT6130 and VT6132 Gigabit Ethernet controller chips, including the following:

•   ZyXEL GN650-T 64-bit PCI Gigabit Ethernet NIC (ZX1701)
•   ZyXEL GN670-T 32-bit PCI Gigabit Ethernet NIC (ZX1702)

The VT6120/VT6122 is a 33/66MHz 64-bit PCI device which combines a tri-speed MAC with an integrated 10/100/1000 copper PHY. (Some older cards use an external PHY.) The VT6130/VT6132 is the PCI Express version. The MAC supports IPv4 transmit/receive IP/TCP/UDP checksum offload, VLAN tag insertion and stripping, a 64-entry CAM filter and a 64-entry VLAN filter, 64-bit multicast hash filter, 4 separate transmit DMA queues, flow control and Jumbo frames (not on VT6130/VT6132) up to 16K in size. The Velocity family has a 16K receive FIFO and 48K transmit FIFO.

The vge driver takes advantage of the IPv4 transmit/receive IP/TCP/UDP checksum offload, VLAN tag insertion and stripping, and the CAM filter support. The CAM filter is used for multicast address filtering to provide 64 perfect multicast address filter support. If it is necessary for the interface to join more than 64 multicast groups, the driver will switch over to using the hash filter.

The vge 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/UTP
    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.

The vge 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), ciphy(4), ifmedia(4), intro(4), ipgphy(4), netintro(4), pci(4), hostname.if(5), ifconfig(8)

HISTORY
The vge device driver first appeared in OpenBSD 3.7.

AUTHORS
-nosplit The vge driver was written by Bill Paul <wpaul@windriver.com> and ported to OpenBSD by Peter Valchev <pvalchev@openbsd.org>.