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
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〉.