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NetBSD 6.1.5 - man page for vge (netbsd section 4)

VGE(4)				   BSD Kernel Interfaces Manual 			   VGE(4)

NAME
     vge -- VIA Networking Technologies VT6122 PCI Gigabit Ethernet adapter driver

SYNOPSIS
     vge* at pci? dev ? function ?

     Configuration of PHYs is also necessary.  See mii(4).

DESCRIPTION
     The vge driver provides support for various NICs and embedded Ethernet interfaces based on
     the VIA Networking Technologies VT6122 Gigabit Ethernet controller chips.

     The 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 MAC supports TCP/IP
     hardware checksums (IPv4 only), TCP large send, VLAN tag insertion and stripping, as well as
     VLAN filtering, a 64-entry CAM filter and a 64-entry VLAN filter, 64-bit multicast hash fil-
     ter, 4 separate transmit DMA queues, flow control and jumbo frames up to 16K in size.  The
     VT6122 has a 16K receive FIFO and 48K transmit FIFO.

     The vge driver takes advantage of the VT6122's checksum offload and VLAN tagging features,
     as well as the jumbo frame and CAM filter support.  The CAM filter is used for multicast
     address filtering to provide 64 perfect multicast address filter support.	If it is neces-
     sary for the interface to join more than 64 multicast groups, the driver will switch over to
     using the hash filter.

     The jumbo frame support can be enabled by setting the interface MTU to any value larger than
     the default of 1500 bytes, up to a maximum of 9000 bytes.	The receive and transmit checksum
     offload support can be toggled on and off using the ifconfig(8) utility.

     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 rc.conf(5).

     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.

     1000baseTX   Set 1000baseTX operation over twisted pair.  The ifconfig(8) mediaopt option
		  can also be used to select either full-duplex or half-duplex modes.

     The vge driver supports the following media options:

     full-duplex  Force full duplex operation.

     half-duplex  Force half duplex operation.

     The vge driver also supports one special link option for 1000baseTX cards:

     link0  With 1000baseTX cards, establishing a link between two ports requires that one port
	    be configured as a master and the other a slave.  With autonegotiation, the mas-
	    ter/slave settings will be chosen automatically.  However when manually selecting the
	    link state, it is necessary to force one side of the link to be a master and the
	    other a slave.  The vge driver configures the ports as slaves by default.  Setting
	    the link0 flag with ifconfig(8) will set a port as a master instead.

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

HARDWARE
     The vge driver supports VIA Networking VT3119 and VT6122 based Gigabit Ethernet adapters
     including:

     o	 VIA Networking LAN-on-motherboard Gigabit Ethernet
     o	 ZyXEL GN650-T 64-bit PCI Gigabit Ethernet NIC (ZX1701)
     o	 ZyXEL GN670-T 32-bit PCI Gigabit Ethernet NIC (ZX1702)

DIAGNOSTICS
     vge%d: couldn't map memory  The driver failed to initialize PCI shared memory mapping.  This
     might happen if the card is not in a bus-master slot.

     vge%d: unable to map interrupt  A fatal initialization error has occurred.

     vge%d: watchdog timeout  The device has stopped responding to the network, or there is a
     problem with the network connection (cable). Driver resets the device.

SEE ALSO
     arp(4), ciphy(4), mii(4), netintro(4), ukphy(4), vlan(4), ifconfig(8)

HISTORY
     The vge device driver first appeared in FreeBSD 5.3 and then in NetBSD 3.0.

AUTHORS
     The vge driver was written by Bill Paul <wpaul@windriver.com>.  The NetBSD port was done by
     Jaromir Dolecek <jdolecek@NetBSD.org>.

BUGS
     VLAN packet filtering is done in software at the moment, though using hardware VLAN tagging.

BSD					  March 5, 2005 				      BSD


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