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NG_FEC(4)		 BSD Kernel Interfaces Manual		     NG_FEC(4)

NAME
     ng_fec -- netgraph	Fast EtherChannel node

SYNOPSIS
     #include <netgraph/ng_fec.h>

DESCRIPTION
     The fec node implements Ethernet port trunking using the "Cisco Fast
     EtherChannel" protocol.  Upon creation, a fec node	creates	a network in-
     terface associated	with it.  Interfaces are named "fec0", "fec1", etc.
     New nodes take the	first available	unit.

HOOKS
     The fec node accepts any hooks.  However it does not use them.  Under
     normal operation, a fec node should not have any hooks.

CONTROL	MESSAGES
     Interface membership in the FEC group is configured with the following
     control messages:

     NGM_FEC_ADD_IFACE (add_iface)
	  Attach interface to the FEC group.  The target interface name	is
	  passed as a string argument.

     NGM_FEC_DEL_IFACE (del_iface)
	  Remove interface from	the trunk.  The	target interface name is
	  passed as a string argument.

     The following control messages define the forwarding method for a node:

     NGM_FEC_SET_MODE_MAC (set_mode_mac)
	  Forwarding decisions will be based on	the link-layer MAC address of
	  the destination.

     NGM_FEC_SET_MODE_INET (set_mode_inet)
	  Forwarding decisions will be based on	the IP address of the destina-
	  tion.

SHUTDOWN
     This node shuts down upon receipt of a NGM_SHUTDOWN control message.

EXAMPLES
     The following example script creates an fec node, attaches	four Ethernet
     interfaces	to it and sets the forwarding method to	be IP-address based:

	   /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

SEE ALSO
     netgraph(4)

HISTORY
     The fec node type was implemented in FreeBSD 5.0.

AUTHORS
     The fec node was written by Bill Paul <wpaul@FreeBSD.org>.	 This manual
     page was written by Gleb Smirnoff <glebius@FreeBSD.org>.

BSD				 July 22, 2004				   BSD

NAME | SYNOPSIS | DESCRIPTION | HOOKS | CONTROL MESSAGES | SHUTDOWN | EXAMPLES | SEE ALSO | HISTORY | AUTHORS

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