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.\"	$OpenBSD: nep.4,v 1.3 2022/09/07 01:22:08 jsg Exp $
.\"
.\" Copyright (c) 2015 Mark Kettenis <kettenis@openbsd.org>
.\"
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.Dd $Mdocdate: September 7 2022 $
.Dt NEP 4
.Os
.Sh NAME
.Nm nep
.Nd Sun Neptune 10Gb Ethernet device
.Sh SYNOPSIS
.Cd "nep* at pci?"
.Cd "brgphy* at mii?"
.Sh DESCRIPTION
The
.Nm
driver provides support for various NICs based on the Sun Neptune
Ethernet controller chips, including the following:
.Pp
.Bl -bullet -compact -offset indent
.It
Sun Quad GbE UTP x8 PCI Express Card
.It
Sun Quad GbE UTP x8 PCIe ExpressModule
.El
.Pp
It uses an internal or external PHY or an external 10-bit interface.
.Pp
The
.Nm
driver supports several media types, which are selected via the
.Xr ifconfig 8
command.
The supported media types are:
.Bl -tag -width "media" -offset indent
.It Cm media No autoselect
Attempt to autoselect the media type (default)
.It Cm media No 1000baseT Cm mediaopt No full-duplex
Use 1000baseT on copper, full duplex
.It Cm media No 1000baseT Cm mediaopt No half-duplex
Use 1000baseT on copper, half duplex
.It Cm media No 100baseTX Cm mediaopt No full-duplex
Use 100baseTX, full duplex
.It Cm media No 100baseTX Cm mediaopt No half-duplex
Use 100baseTX, half duplex
.El
.Sh SEE ALSO
.Xr arp 4 ,
.Xr brgphy 4 ,
.Xr ifmedia 4 ,
.Xr inet 4 ,
.Xr intro 4 ,
.Xr netintro 4 ,
.Xr hostname.if 5 ,
.Xr ifconfig 8
.Sh HISTORY
.Ox
support for
.Nm
first appeared in
.Ox 5.7 .
.Sh AUTHORS
The
.Nm
driver was written by
.An Mark Kettenis Aq Mt kettenis@openbsd.org .
.Sh BUGS
The
.Nm
driver currently only supports 1Gb Ethernet NICs.
It also does not yet use many of the advanced features the Neptune
chip offers.