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Document the "fec" Netgraph node type.

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Submitted by:	Gleb Smirnoff
OK'ed by:	julian, wpaul
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Ruslan Ermilov 2004-06-22 09:09:18 +00:00
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1
share/man/man4/Makefile
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@ -169,6 +169,7 @@ MAN= aac.4 \
ng_eiface.4 \
ng_etf.4 \
ng_ether.4 \
ng_fec.4 \
ng_frame_relay.4 \
ng_gif.4 \
ng_gif_demux.4 \

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share/man/man4/ng_fec.4 Normal file
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.\" Copyright (c) 2004 Gleb Smirnoff
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON 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 ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd July 17, 2004
.Dt NG_FEC 4
.Os
.Sh NAME
.Nm ng_fec
.Nd netgraph Fast EtherChannel node
.Sh SYNOPSIS
.In netgraph/ng_fec.h
.Sh DESCRIPTION
The
.Nm fec
node implements Ethernet port trunking using Cisco Fast EtherChannel protocol.
Upon creation, node creates a network interface associated with it.
Interfaces are named
.Dq Li fec0 ,
.Dq Li fec1 ,
etc.
New node takes first available unit.
.Sh HOOKS
The
.Nm fec
node accepts any hooks.
However it does not use them.
Under normal operation, node should not have any hooks.
.Sh CONTROL MESSAGES
Interface membership in the FEC group is configured with the following
control messages:
.Bl -tag -width indent
.It Dv NGM_FEC_ADD_IFACE Pq Dq Li add_iface
Attach interface to the FEC group.
Target interface name is passed as a string argument.
.It Dv NGM_FEC_DEL_IFACE Pq Dq Li del_iface
Remove interface from the trunk.
Target interface name is passed as a string argument.
.El
.Pp
The following control messages define forwarding method for a node:
.Bl -tag -width indent
.It Dv NGM_FEC_MODE_INET Pq Dq Li set_mode_mac
Forwarding decisions will be made on destination link layer MAC addresses.
.It Dv NGM_FEC_MODE_MAC Pq Dq Li set_mode_inet
Forwarding decisions will be made on destination IP addresses.
.El
.Sh SHUTDOWN
This node shuts down upon receipt of a
.Dv NGM_SHUTDOWN
control message.
.Sh EXAMPLES
This example script creates a
.Nm fec
node, attaches four Ethernet interfaces to it and
sets forwarding method based on IP address:
.Bd -literal -offset indent
/usr/sbin/ngctl -f- <<-SEQ
mkpeer fec dummy fec
msg fec0: add_iface "dc0"
msg fec0: add_iface "dc1"
msg fec0: add_iface "dc2"
msg fec0: add_iface "dc3"
msg fec0: set_mode_inet
SEQ
.Ed
.Sh SEE ALSO
.Xr netgraph 4
.Sh HISTORY
The
.Nm fec
node type was implemented in
.Fx 5.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm fec
node was written by
.An "Bill Paul" Aq wpaul@FreeBSD.org .
This manual page was written by
.An "Gleb Smirnoff" .
.Sh BUGS
At this moment
.Nm
is incompatible with
.Xr ng_ether 4 .