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>.

Debian                                            July 22, 2004                                        NG_FEC(4)