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

TXP(4)				   BSD Kernel Interfaces Manual 			   TXP(4)

     txp -- 3Com 3XP Typhoon/Sidewinder (3CR990) Ethernet interface

     txp* at pci? dev ? function ?

     The txp interface provides access to the 10Mb/s and 100Mb/s Ethernet networks via the 3Com
     Typhoon/Sidewinder chipset.  This driver supports the following cards:

	   o   3Com 3CR990-TX-95
	   o   3Com 3CR990-TX-97
	   o   3Com 3CR990SVR95
	   o   3Com 3CR990SVR97

     Basic Ethernet functions are provided as well as support for vlan(4) tag removal and inser-
     tion 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.  Note that hardware checksumming
     is only used when the interface is not in bridge(4) mode.

     Each of the host's network addresses is specified at boot time with an SIOCSIFADDR ioctl(2).
     The txp interface employs the address resolution protocol described in arp(4) to dynamically
     map between Internet and Ethernet addresses on the local network.

     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

     arp(4), ifmedia(4), inet(4), intro(4), ip(4), netintro(4), pci(4), tcp(4), udp(4), vlan(4),

     The txp driver first appeared in NetBSD 2.0.

BSD					 August 21, 2003				      BSD

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