.\"	$OpenBSD: cdcef.4,v 1.3 2007/05/31 19:19:49 jmc Exp $
.\"
.\" Uwe Stuehler, 2006. Public Domain.
.\"
.Dd $Mdocdate: May 31 2007 $
.Dt CDCEF 4
.Os
.Sh NAME
.Nm cdcef
.Nd USB Communication Device Class Ethernet function
.Sh SYNOPSIS
.Cd "cdcef* at usbf?"
.Sh DESCRIPTION
The
.Nm
driver implements the USB Communication Device Class (CDC) Ethernet
Emulation Model (EEM) to provide support for USB Host-to-Host bridges.
.Pp
The USB bridge appears as a regular network interface on both sides,
transporting Ethernet frames.
.Pp
For more information on configuring this device, see
.Xr ifconfig 8 .
.Sh SEE ALSO
.Xr arp 4 ,
.Xr cdce 4 ,
.Xr intro 4 ,
.Xr netintro 4 ,
.Xr usbf 4 ,
.Xr hostname.if 5 ,
.Xr ifconfig 8
.Rs
.%T "Universal Serial Bus Class Definitions for Communication Devices"
.%O http://www.usb.org/developers/devclass_docs/usbcdc11.pdf
.Re
.Rs
.%T "CDC Subclass Specification for Ethernet Emulation Model Devices"
.%O http://www.usb.org/developers/devclass_docs/CDC_EEM10.pdf
.Re
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 4.1 .
.Sh AUTHORS
.An -nosplit
The
.Nm
driver was written by
.An Uwe Stuehler Aq uwe@openbsd.org
and
.An Dale Rahn Aq drahn@openbsd.org .