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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: release/9.1.0/share/man/man4/ng_fec.4 171809 2007-08-12 16:02:30Z danger $ .\" .Dd July 22, 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 the .Dq Cisco Fast EtherChannel protocol. Upon creation, a .Nm fec node creates a network interface associated with it. Interfaces are named .Dq Li fec0 , .Dq Li fec1 , etc. New nodes take the first available unit. .Sh HOOKS The .Nm fec node accepts any hooks. However it does not use them. Under normal operation, a .Nm fec 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. The 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. The target interface name is passed as a string argument. .El .Pp The following control messages define the forwarding method for a node: .Bl -tag -width indent .It Dv NGM_FEC_SET_MODE_MAC Pq Dq Li set_mode_mac Forwarding decisions will be based on the link-layer MAC address of the destination. .It Dv NGM_FEC_SET_MODE_INET Pq Dq Li set_mode_inet Forwarding decisions will be based on the IP address of the destination. .El .Sh SHUTDOWN This node shuts down upon receipt of a .Dv NGM_SHUTDOWN control message. .Sh EXAMPLES The following example script creates an .Nm fec node, attaches four Ethernet interfaces to it and sets the forwarding method to be IP-address based: .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" Aq glebius@FreeBSD.org .