NetBSD/share/man/man4/man4.sparc/le.4

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.\" $NetBSD: le.4,v 1.7 1998/06/11 08:32:20 fair Exp $
.\"
.\" Copyright (c) 1992, 1993
.\" The Regents of the University of California. All rights reserved.
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.\" This software was developed by the Computer Systems Engineering group
.\" at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
.\" contributed to Berkeley.
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.\" from: Header: le.4,v 1.2 92/10/13 05:31:33 leres Exp
.\" from: @(#)le.4 8.1 (Berkeley) 6/9/93
.\"
.Dd June 9, 1993
.Dt LE 4 sparc
.Os
.Sh NAME
.Nm le
.Nd SPARC AMD 7990 LANCE ethernet interface
.Sh SYNOPSIS
.Cd "le* at sbus? slot ? offset ?"
.Cd "le* at ledma0 slot ? offset ?"
.Cd "le* at lebuffer? slot ? offset ?"
.Sh DESCRIPTION
The
.Nm
interface provides access to the 10 Mb/s
.Tn Ethernet
network via the
.Tn AMD
Am7990
Local Area Network Controller for Ethernet
.Pq Tn LANCE
chip set.
.Pp
Each of the host's network addresses
is specified at boot time with an
.Dv SIOCSIFADDR
.Xr ioctl .
The
.Nm
interface employs the address resolution protocol described in
.Xr arp 4
to dynamically map between Internet and
.Tn Ethernet
addresses on the local
network.
.Pp
Interfaces attached to an
.Sy ledma0
typically have have two types of connectors:
.Pp
.Bl -tag -offset indent -width xxxxxxxxxxxxxxxxxx
.It AUI/DIX
Standard 15 pin connector
.It 10BaseT
UTP, also known as twisted pair
.El
.Pp
The appropriate connector can be selected by supplying a
.Cm media
parameter to
.Xr ifconfig 8 .
The supported arguments for
.Cm media
are:
.Bl -tag -offset indent -width xxxxxxxxxxxxxxxxxx
.It Sy 10base5/AUI
to select the AUI connector, or
.It Sy 10baseT/UTP
to select the UTP connector.
.El
.Pp
If a
.Cm media
parameter is not specified, a default connector is selected for
use by examining all media types for carrier.
The first connector on which a carrier is detected will be selected.
Additionally, if carrier is dropped on a port, the driver will switch between
the possible ports until one with carrier is found.
.Pp
.Sh SEE ALSO
.Xr intro 4 ,
.Xr inet 4 ,
.Xr arp 4