The dlpid daemon is called from the
network driver start/stop script.
It links or unlinks each
MDI (MAC Driver Interface)
driver to the common
DLPI (Data Link Provider Interface)
module using I_PLINK STREAMS
The DLPI module provides common media-independent
The MDI drivers are specific to network adapter types;
they simply pass STREAMS message blocks between the
DLPI module and the adapter, queuing frames before
transmission if the hardware is busy.
MAC (Media Access Control) frame multiplexing and
LLC Class 1, a common low-level networking protocol
that is used by IPX/SPX, NetBEUI, and OSI. It
is required by SNAP.
SNAP (Sub Network Access Protocol), a low-level
networking protocol that enables Ethernet-oriented stacks (such
as TCP/IP) to run on non-Ethernet networks
source routing, a low-level networking protocol used by ring
topology networks (such as Token Ring and FDDI) to
enable frames to traverse multiple connected rings
The dlpid daemon is started in the background by
/etc/nd start and remains active while the system is
in multiuser mode. dlpid opens the DLPI
and MDI device files, and keeps them linked and ready
for protocol stack use.
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003