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34 .Nd 3Com 3XP Typhoon/Sidewinder (3CR990) Ethernet interface
40 interface provides access to the 10Mb/s and 100Mb/s Ethernet networks via the
42 .Tn Typhoon/Sidewinder
45 Basic Ethernet functions are provided as well as support for
47 tag removal and insertion assistance, receive
57 There is currently no support for
67 Note that hardware checksumming is only used when the interface is not
72 Each of the host's network addresses
73 is specified at boot time with an
78 interface employs the address resolution protocol described in
80 to dynamically map between Internet and Ethernet addresses on the local
85 interface is brought up, by default, it will attempt to auto-negotiate the
86 link speed and duplex mode.
87 The speeds, in order of attempt, are:
88 100Mb/s Full Duplex, 100Mb/s Half Duplex, 10 Mb/s Full Duplex, and
93 supports several media types, which are selected via the
96 The supported media types are:
97 .Bl -tag -width indent
98 .It Cm media autoselect
99 Attempt to autoselect the media type (default)
100 .It Cm media 100baseTX mediaopt full-duplex
101 Use 100baseTX, full duplex
102 .It Cm media 100baseTX Op Cm mediaopt half-duplex
103 Use 100baseTX, half duplex
104 .It Cm media 10baseT mediaopt full-duplex
105 Use 10baseT, full duplex
106 .It Cm media 10baseT Op Cm mediaopt half-duplex
107 Use 10baseT, half duplex
112 driver supports the following cards:
114 .Bl -bullet -offset indent -compact
141 driver first appeared in