1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the Systems Programming Group of the University of Utah Computer 6.\" Science Department. 7.\" 8.\" %sccs.include.redist.man% 9.\" 10.\" @(#)le.4 8.2 (Berkeley) 11/30/93 11.\" 12.Dd 13.Dt LE 4 hp300 14.Os 15.Sh NAME 16.Nm le 17.Nd 18.Tn HP AMD 197990 20.Tn LANCE 21Ethernet interface 22.Sh SYNOPSIS 23.Cd "device le0 at scode?" 24.Sh DESCRIPTION 25The 26.Nm le 27interface provides access to a 10 Mb/s Ethernet network via the 28.Tn AMD 297990 30.Tn LANCE 31Ethernet chip set. 32.Pp 33Each of the host's network addresses 34is specified at boot time with an 35.Dv SIOCSIFADDR 36.Xr ioctl . 37The 38.Xr le 39interface employs the address resolution protocol described in 40.Xr arp 4 41to dynamically map between Internet and Ethernet addresses on the local 42network. 43.Pp 44The use of ``trailer'' encapsulation to minimize copying data on 45input and output is supported by the interface but offers no advantage 46due to the large 47.Tn HP 48page size. 49The use of trailers is negotiated with 50.Tn ARP . 51This negotiation may be disabled, on a per-interface basis, 52by setting the 53.Dv IFF_NOTRAILERS 54flag with an 55.Dv SIOCSIFFLAGS 56.Xr ioctl . 57.Sh DIAGNOSTICS 58.Bl -diag 59.It le%d: hardware address %s. 60This is a normal autoconfiguration message noting the 6 byte physical 61ethernet address of the adapter. 62.Pp 63.It de%d: can't handle af%d. 64The interface was handed 65a message with addresses formatted in an unsuitable address 66family; the packet was dropped. 67.Pp 68The following message indicates a possible hardware error performing 69the indicated operation during autoconfiguration or initialization. 70.Pp 71.It le%d: init timeout, stat = 0x%x. 72The hardware did not respond to an initialize command during reset. 73The reset procedure continues anyway. 74.El 75.Sh SEE ALSO 76.Xr intro 4 , 77.Xr inet 4 , 78.Xr arp 4 79