1999-10-21 09:06:11 +00:00
|
|
|
.\" Copyright (c) 1996-1999 Whistle Communications, Inc.
|
|
|
|
|
.\" All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Subject to the following obligations and disclaimer of warranty, use and
|
|
|
|
|
.\" redistribution of this software, in source or object code forms, with or
|
|
|
|
|
.\" without modifications are expressly permitted by Whistle Communications;
|
|
|
|
|
.\" provided, however, that:
|
|
|
|
|
.\" 1. Any and all reproductions of the source or object code must include the
|
|
|
|
|
.\" copyright notice above and the following disclaimer of warranties; and
|
|
|
|
|
.\" 2. No rights are granted, in any manner or form, to use Whistle
|
|
|
|
|
.\" Communications, Inc. trademarks, including the mark "WHISTLE
|
|
|
|
|
.\" COMMUNICATIONS" on advertising, endorsements, or otherwise except as
|
|
|
|
|
.\" such appears in the above copyright notice or in the software.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
|
|
|
|
|
.\" TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
|
|
|
|
|
.\" REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
|
|
|
|
|
.\" INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
|
|
|
|
|
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
|
|
|
|
|
.\" WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
|
|
|
|
|
.\" REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
|
|
|
|
|
.\" SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
|
|
|
|
|
.\" IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
|
|
|
|
|
.\" RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
|
|
|
|
|
.\" WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
|
|
|
|
.\" PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
|
|
|
.\" SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
|
|
|
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
|
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
|
|
|
.\" THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
|
|
|
|
|
.\" OF SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Author: Archie Cobbs <archie@whistle.com>
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\" $Whistle: ng_frame_relay.8,v 1.4 1999/01/25 23:46:26 archie Exp $
|
|
|
|
|
.\"
|
|
|
|
|
.Dd January 19, 1999
|
|
|
|
|
.Dt NG_FRAME_RELAY 8
|
1999-11-07 05:16:27 +00:00
|
|
|
.Os FreeBSD 4.0
|
1999-10-21 09:06:11 +00:00
|
|
|
.Sh NAME
|
|
|
|
|
.Nm ng_frame_relay
|
|
|
|
|
.Nd Frame relay netgraph node type
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Fd #include <netgraph/ng_frame_relay.h>
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.Nm frame_relay
|
|
|
|
|
node type performs encapsulation, de-encapsulation, and multiplexing
|
|
|
|
|
of packets using the frame relay protocol. It supports up to 1024 DLCI's.
|
|
|
|
|
The LMI protocol is handled by a separate node type (see
|
|
|
|
|
.Xr ng_lmi 8 ).
|
|
|
|
|
.Pp
|
|
|
|
|
The
|
|
|
|
|
.Dv downstream
|
|
|
|
|
hook should be connected to the synchronous line, i.e., the switch.
|
|
|
|
|
Then hooks
|
|
|
|
|
.Dv dlci0 ,
|
|
|
|
|
.Dv dlci1 ,
|
|
|
|
|
through
|
|
|
|
|
.Dv dlci1023
|
|
|
|
|
are available to connect to each of the DLCI channels.
|
|
|
|
|
.Sh HOOKS
|
|
|
|
|
This node type supports the following hooks:
|
|
|
|
|
.Pp
|
|
|
|
|
.Bl -tag -width foobar
|
|
|
|
|
.It Dv downstream
|
|
|
|
|
The connection to the synchronous line.
|
|
|
|
|
.It Dv dlciX
|
|
|
|
|
Here X is a decimal number from 0 to 1023. This hook corresponds
|
|
|
|
|
to the DLCI X frame relay virtual channel.
|
|
|
|
|
.El
|
|
|
|
|
.Sh CONTROL MESSAGES
|
|
|
|
|
This node type supports only the generic control messages.
|
|
|
|
|
.Sh SHUTDOWN
|
|
|
|
|
This node shuts down upon receipt of a
|
|
|
|
|
.Dv NGM_SHUTDOWN
|
|
|
|
|
control message, or when all hooks have been disconnected.
|
|
|
|
|
.Sh BUGS
|
|
|
|
|
Technically, frames on DLCI X should not be transmitted to the switch
|
|
|
|
|
until the LMI protocol entity on both ends has configured DLCI X as active.
|
|
|
|
|
The
|
|
|
|
|
.Nm frame_relay
|
|
|
|
|
node type ignores this restriction, and will always pass data received
|
|
|
|
|
on a DLCI hook to
|
|
|
|
|
.Dv downstream .
|
|
|
|
|
Instead, it should query the LMI node first.
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr netgraph 4 ,
|
|
|
|
|
.Xr ng_lmi 8 ,
|
|
|
|
|
.Xr ngctl 8 .
|
|
|
|
|
.Sh AUTHOR
|
1999-10-30 20:30:19 +00:00
|
|
|
Julian Elischer <julian@whistle.com>
|
