OpenBSD-4.6/share/man/man4/mpe.4

.\"	$OpenBSD: mpe.4,v 1.4 2009/01/06 13:59:22 jmc Exp $
.\"
.\" Copyright (C) 2008 Pierre-Yves Ritschard <pyr@openbsd.org>
.\"
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.Dd $Mdocdate: January 6 2009 $
.Dt MPE 4
.Os
.Sh NAME
.Nm mpe
.Nd MPLS Provider Edge
.Sh SYNOPSIS
.Cd "pseudo-device mpe"
.Sh DESCRIPTION
The
.Nm
interface is an MPLS Provider Edge pseudo-device used to enter
and leave an MPLS domain.
.Pp
A
.Nm
interface can be created at runtime using the
.Ic ifconfig mpe Ns Ar N Ic create
command or by setting up a
.Xr hostname.if 5
configuration file for
.Xr netstart 8 .
The interface itself can be configured with
.Xr ifconfig 8 ;
see its manual page for more information.
.Pp
.Nm
interfaces support the following unique ioctls:
.Bl -tag -width "SIOCSETLABEL" -offset 3n
.It SIOCSETLABEL
Encapsulate packets entering this interface in MPLS using
the specified label.
.It SIOCGETLABEL
Report the label that packets entering this interface will be
tagged with.
.El
.\"
.Sh SEE ALSO
.Xr sysctl 3 ,
.Xr mpls 4 ,
.Xr hostname.if 5 ,
.Xr ifconfig 8 ,
.Xr netstart 8
.\"
.Sh HISTORY
The
.Nm
device first appeared in
.Ox 4.4 .
.\"
.Sh AUTHORS
The
.Nm
driver was written by
.An Pierre-Yves Ritschard Aq pyr@openbsd.org .