NG_ATMLLC(4)                                               BSD Kernel Interfaces Manual                                               NG_ATMLLC(4)

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>

BSD                                                                March 8, 2004                                                               BSD