lan(7)lan(7)NAMElan - network I/O card access information
DESCRIPTION
This manual entry gives a brief description on how to access the LAN
device driver at Layer 2 (Data Link Layer) of the OSI architecture.
The LAN device driver controls the various LAN interface cards (e.g,
Ethernet/IEEE 802.3, FDDI, Token Ring) at Layer 1 (Physical Layer).
The Data Link Provider Interface (DLPI) is the supported method for
accessing the LAN device driver at Layer 2. DLPI is intended for use
by knowledgeable network users only. Refer to the for complete pro‐
gramming details.
There are HP and non-HP drivers and interface cards which will provide
their own DLPI module. These types of DLPI are referred to as
"native" DLPI.
Overview
The Physical Point of Attachment (PPA) is a numerical value that
uniquely identifies a particular device. The PPA value can be
obtained from the and commands. The "ClassInstance" identifier in the
output is the concatenation of the driver class (lan) and the PPA num‐
ber. The "NamePPA" identifier in the output is a concatenation of the
interface name and the PPA number. The value for a lan device is
equivalent to the PPA number for that device.
A single hardware device may have multiple "NamePPA" identifiers, which
indicates multiple encapsulation methods supported for to the device.
For Ethernet/IEEE 802.3 links, the "Name" is used to designate Ethernet
encapsulation, and for IEEE 802.3 encapsulation. For other links
(FDDI, Token Ring), only the encapsulation designation is used.
Methods of transfer over the DLPI interface through the lan devices
include "raw", "connectionless", and "connection-oriented" data trans‐
fers.
WARNINGS
The and commands are deprecated. These commands will be removed in a
future HP-UX release. HP recommends the use of replacement command
nwmgr(1M) to perform all network interface-related tasks.
AUTHOR
was developed by HP.
SEE ALSOlanscan(1M), lanadmin(1M), linkloop(1M), nwmgr(1M).
1995, Hewlett-Packard
Version 2.0, November 1982, Digital Equipment Corporation, Intel Corpo‐
ration, Xerox Corporation
1996, Institute of Electrical and Electronic Engineers
1996, Institute of Electrical and Electronic Engineers
1995, ANSI
1995, Institute of Electrical and Electronic Engineers
1995, Institute of Electrical and Electronic Engineers
lan(7)