NAME

       ng_atmllc — ATM LLC netgraph node type

SYNOPSIS

       #include <netgraph/ng_atmllc.h>

DESCRIPTION

       The  atmllc node type translates frames in to and out of ATM LLC encapsulation, as specified by RFC 1483.
       In LLC encapsulation the protocol of a given protocol data unit (PDU) is specified by an IEEE  802.2  LLC
       header,  possibly  followed  by  an  IEEE  802.1a  SubNetwork  Attachment Point (SNAP) header.  This node
       currently handles the Ethernet and FDDI protocols.

       The node transmits and receives ATM PDUs on the atm hook.  Received PDUs are decoded and forwarded to the
       ether or fddi hooks as appropriate.  Data received on the ether or fddi hooks  are  assumed  to  be  full
       Ethernet or FDDI packets as appropriate and are encapsulated into a PDU and transmitted via the atm hook.

HOOKS

       This node type supports the following hooks:

       atm    ATM  connection.   Typically,  this  hook  would  be  connected to a ng_atm(4) node, which handles
              transmission of ATM PDUs over an ATM device.

       ether  Ethernet connection.  This hook sends and  receives  Ethernet  frames.   This  would  normally  be
              connected to an ng_eiface(4) node if in use.

       fddi   FDDI connection.  This hook sends and receives FDDI frames.

CONTROL MESSAGES

       This node type supports the generic control messages.

SHUTDOWN

       This  node  shuts  down  upon  receipt  of  a  NGM_SHUTDOWN  control message, or when all hooks have been
       disconnected.

SEE ALSO

       netgraph(4), ng_atm(4), ng_eiface(4), ngctl(8)

       J. Heinanen, Multiprotocol Encapsulation over ATM Adaptation Layer 5, RFC 1483.

AUTHORS

       Benno Rice <benno@FreeBSD.org>

Debian                                            March 8, 2004                                     NG_ATMLLC(4)