1 .\" $OpenBSD: txp.4,v 1.8 2001/06/26 02:09:11 pjanzen Exp $
4 .\" Copyright (c) 2001 Jason L. Wright (jason@thought.net)
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38 .Nd 3Com 3XP Typhoon/Sidewinder (3CR990) Ethernet interface
44 interface provides access to the 10Mb/s and 100Mb/s Ethernet networks via the
46 .Tn Typhoon/Sidewinder
49 Basic Ethernet functions are provided as well as support for
51 tag removal and insertion assistance, receive
61 There is currently no support for
71 Note that hardware checksumming is only used when the interface is not
76 Each of the host's network addresses
77 is specified at boot time with an
82 interface employs the address resolution protocol described in
84 to dynamically map between Internet and Ethernet addresses on the local
89 interface is brought up, by default, it will attempt to auto-negotiate the
90 link speed and duplex mode.
91 The speeds, in order of attempt, are:
92 100Mb/s Full Duplex, 100Mb/s Half Duplex, 10 Mb/s Full Duplex, and
97 supports several media types, which are selected via the
100 The supported media types are:
101 .Bl -tag -width indent
102 .It Cm media autoselect
103 Attempt to autoselect the media type (default)
104 .It Cm media 100baseTX mediaopt full-duplex
105 Use 100baseTX, full duplex
106 .It Cm media 100baseTX Op Cm mediaopt half-duplex
107 Use 100baseTX, half duplex
108 .It Cm media 10baseT mediaopt full-duplex
109 Use 10baseT, full duplex
110 .It Cm media 10baseT Op Cm mediaopt half-duplex
111 Use 10baseT, half duplex
116 driver supports the following cards:
118 .Bl -bullet -offset indent -compact
146 driver first appeared in