NG_FEC(4) | FreeBSD Kernel Interfaces Manual | NG_FEC(4) |
NAME
ng_fec — netgraph Fast EtherChannel nodeSYNOPSIS
#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 <wpaul@FreeBSD.org>. This manual page was written by <glebius@FreeBSD.org>.July 22, 2004 | FreeBSD |