NG_FEC(4) MidnightBSD 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 Cisco Fast EtherChannel protocol. Upon creation, node creates a network interface associated with it. Interfaces are named ‘‘fec0’’, ‘‘fec1’’, etc. New node takes first available unit.

HOOKS

The fec node accepts any hooks. However it does not use them. Under normal operation, 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. Target interface name is passed as a string argument.

NGM_FEC_DEL_IFACE (‘‘del_iface’’)

Remove interface from the trunk. Target interface name is passed as a string argument.

The following control messages define forwarding method for a node:

NGM_FEC_MODE_INET (‘‘set_mode_mac’’)

Forwarding decisions will be made on destination link layer MAC addresses.

NGM_FEC_MODE_MAC (‘‘set_mode_inet’’)

Forwarding decisions will be made on destination IP addresses.

SHUTDOWN

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

EXAMPLES

This example script creates a fec node, attaches four Ethernet interfaces to it and sets forwarding method based on IP address:

/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.

MidnightBSD 0.3 July 22, 2004 MidnightBSD 0.3