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ng_fec (4)

>> ng_fec (4) ( FreeBSD man: Специальные файлы /dev/* )

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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 interface 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 destination.

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

HISTORY

The fec node type was implemented in Fx 5.0 .

AUTHORS

An -nosplit The 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 .