Copyright (c) 2004 Gleb Smirnoff All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or othe...
NAMEng_fec - netgraph Fast EtherChannel node
DESCRIPTIONThe 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.
HOOKSThe fec node accepts any hooks. However it does not use them. Under normal operation, a fec node should not have any hooks.
CONTROL MESSAGESInterface 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.
SHUTDOWNThis node shuts down upon receipt of a NGM_SHUTDOWN control message.
EXAMPLESThe 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