ATM LLC netgraph node type
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
The node transmits and receives ATM PDUs on the
hook. Received PDUs are decoded and
forwarded to the ether
hooks as appropriate. Data received on
hooks are assumed to be full Ethernet or
FDDI packets as appropriate and are encapsulated into a PDU and transmitted
via the atm
This node type supports the following hooks:
- ATM connection. Typically, this hook would be connected to a
ng_atm(4) node, which handles transmission of
ATM PDUs over an ATM device.
- Ethernet connection. This hook sends and receives Ethernet frames. This
would normally be connected to an
ng_eiface(4) node if in use.
- FDDI connection. This hook sends and receives FDDI frames.
This node type supports the generic control messages.
This node shuts down upon receipt of a
control message, or when all
hooks have been disconnected.
Multiprotocol Encapsulation over ATM Adaptation Layer
5, RFC 1483.