table of contents
|NG_FRAME_RELAY(4)||Device Drivers Manual||NG_FRAME_RELAY(4)|
frame relay netgraph node type
frame_relay node type performs
encapsulation, de-encapsulation, and multiplexing of packets using the frame
relay protocol. It supports up to 1024 DLCI's. The LMI protocol is handled
by a separate node type (see ng_lmi(4)).
downstream hook should be connected to
the synchronous line, i.e., the switch. Then hooks
dlci1023 are available to connect to each of the
This node type supports the following hooks:
- The connection to the synchronous line.
- Here X is a decimal number from 0 to 1023. This hook corresponds to the DLCI X frame relay virtual channel.
This node type supports only the generic control messages.
This node shuts down upon receipt of a
NGM_SHUTDOWN control message, or when all hooks have
ng_frame_relay node type was
implemented in FreeBSD 4.0.
Julian Elischer <julian@FreeBSD.org>
Technically, frames on DLCI X should not be transmitted to the
switch until the LMI protocol entity on both ends has configured DLCI X as
ng_frame_relay node type ignores this
restriction, and will always pass data received on a DLCI hook to
downstream. Instead, it should query the LMI node
|January 19, 1999||Debian|