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Author: Archie Cobbs <archie@FreeBSD.org>
$FreeBSD$
$Whistle: ng_frame_relay.8,v 1.4 1999/01/25 23:46:26 archie Exp $
.Dd January 19, 1999 .Dt NG_FRAME_RELAY 4 .Os .Sh NAME .Nm ng_frame_relay .Nd frame relay netgraph node type .Sh SYNOPSIS n netgraph/ng_frame_relay.h .Sh DESCRIPTION The .Nm 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 .Xr ng_lmi 4 ) .
p The .Dv downstream hook should be connected to the synchronous line, i.e., the switch. Then hooks .Dv dlci0 , .Dv dlci1 , through .Dv dlci1023 are available to connect to each of the DLCI channels. .Sh HOOKS This node type supports the following hooks: l -tag -width ".Va downstream" t Va downstream The connection to the synchronous line. t Va dlciX Here X is a decimal number from 0 to 1023. This hook corresponds to the DLCI X frame relay virtual channel. .El .Sh CONTROL MESSAGES This node type supports only the generic control messages. .Sh SHUTDOWN This node shuts down upon receipt of a .Dv NGM_SHUTDOWN control message, or when all hooks have been disconnected. .Sh SEE ALSO .Xr netgraph 4 , .Xr ng_lmi 4 , .Xr ngctl 8 .Sh HISTORY The .Nm node type was implemented in .Fx 4.0 . .Sh AUTHORS .An Julian Elischer Aq Mt julian@FreeBSD.org .Sh BUGS 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 active. The .Nm node type ignores this restriction, and will always pass data received on a DLCI hook to .Dv downstream . Instead, it should query the LMI node first.