HP LaserJet 9000 Manuale utente

HP 9000 Computers

DTC Device File Access

Utilities and Telnet P

ort

Identification

ABCDE

HP Part No. B1030-90002

Printed in U.S.A. 01/95

Edition 2

E0195

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Edition 2

Jan

uary 1995 (HP-UX Release 10.0)

Contents

1. In

tro duction

tended Audience ..........1-2

Prerequisites .............1-2

Supported Congurations .......1-3

Related HP Do cumen

tation ......1-5

2. Ov

erview of DDF

AAnd T

elnet P

ort Iden

tication

How DDF

AUtilities W

ork .......2-2

elnet P

ort Iden

tication W

orks ..2-5

wDevice Files Are Handled By MUXes

and DTC T

erminal Serv

ers .....2-5

Setting Up Outgoing and Incoming

Connections ...........2-6

DDF

AFile Directories and Setup ....2-9

3. Conguring DDF

AConnections

DDFAMaster Files . . ........3-1

Related Conguration T

asks .... . . 3-3

DDF

AConguration T

asks ......3-4

Conguring Outgoing Connections

(Prin

ters) . . . . . . . . . . . . 3-5

Conguring Incoming Connections

(Terminals) . .. . . . . . . . . 3-8

Starting Up the o cd Daemons . . . . 3-9

Contents-1

4. Dening and Executing DDF

arameters

Using Dedicated P

orts .........4-1

The Dedicated P

ort File, dp . . . . . .4-2

The P

ort Conguration File, pcf ....4-4

Managing Outgoing Dedicated P

orts With

dpp and ocd .. . . . ......4-9

Preparing to Use dpp ........4-11

Using dpp to Kill and Restart ocds ..4-12

Using dpp to Start Up New o cds . ..4-12

Using dpp to Remo

eExisting ocds ..4-12

Managing Incoming Connections b

ytelnetd 4-13

Using dpp to Update T

elnet P

ort

Identication Info . . . .....4-13

5. Application Examples

Setting Up Prin

ters with the HP-UX

Spooler ............. . 5-1

HP-UX Spooler Example ......5-2

Accessing DTC or non-DTC P

orts

Programmatically .........5-3

Conguring Incoming Connections for

CSLIP/SLIP .. . . . ......5-5

6. Simple DDF

roubleshooting

Troublesho oting Chec

klist . ......6-2

roublesho oting Outgoing Connections .6-3

Chec

kfor Syn

tax Errors .......6-3

Check for Incorrect Addresses ....6-3

Chec

elnet Operation . . . . . ..6-3

erify ocd .... . ........6-4

Checkthe pty . . . . . . . . . . . 6-4

Check System Lev

el Data P

ath . . . . 6-4

Troublesho oting Incoming Connections .6-5

If You Ha

ve to Call Hewlett-P

ackard . 6-6

Contents-2

A. Appendix A: dpp Error Messages

B. Appendix B: ocd Logging Messages

Critical Messages . . . . . ......B-2

Serious Messages ...........B-7

arning Messages ...... . . . .B-19

Informational Messages . . . .....B-26

Index

Contents-3

Figures

2-1. HP 9000 and DTC In

teraction With

DDF

A.............2-4

2-2. Incoming Connection Using T

elnet P

ort

Iden

tication ......... . 2-8

Contents-4

Introduction

This man

ual explains ho

wto use the DTC Device

File Access Utilities (DDF

A) and the T

elnet P

ort

Iden

tication feature to comm

unicate with HP 9000

serial devices connected to net

ork terminal serv

ers suc

as the HP Datacommunications and T

erminal Con

troller

(DTC). DDF

Afacilitates the use of pseudoterminal

(pt

y) device les to open outgoing T

elnet connections

to the DTC or other terminal serv

er, while T

elnet P

ort

Iden

tication uses them to establish incoming T

elnet

connections from kno

wn devices on the serv

er. T

elnet

is one of the HP 9000 In

ternet Services (HP B1030B),

formerly kno

wn as the HP 9000 ARP

AServices.

DDF

as originally designed for use with DTCs, but as

of HP-UX 10.0, it can no

wbeused with other terminal

serv

ers whic

huse addressing schemes similar to the

DTC. There will besome guidelines on ho

wto congure

DDF

Afor use with non-DTC terminal serv

ers, but the

DTC will be used as the primary example throughout

this man

ual.

In addition, there is general discussion on the topic of

yuse with HP DTC terminal serv

ers v

ersus the HP

MUX, and ho

w to troublesho ot incoming and outgoing

DDF

A connections.

Introduction 1-1

Intended Audience

This man

ual is in

tended for at least three t

ypes of users:

The HP 9000 system administrator or net

work

administrator who denes and congures the device

les asso ciated with DTC and other terminal serv

devices on the system.

The HP 9000 system operator or net

ork operator

who ma

yimplemen

tthe actual tasks set up by the

system or net

ork administrator.

The applications programmer who needs programmatic

con

trol of devices on the DTC or other terminal serv

using standard HP-UX input/output calls suc

has

open

io ctl

read

,and

write

.This programmer

y also ha

eapplications using devices connected to

MUX ports and wishes to extend the application to

use DTC devices.

Prerequisites

Before reading this man

ual and using this soft

are, y

should befamiliar with ho

wto:

Handle HP-UX operating system and system

administration, especially with devices and device les.

Congure aDTC

with either the DTC Manager/UX

pro duct (HP J2120A) or the OpenView DTC Manager

pro duct on the PC (HP D2355A).

Congure and administer other terminal serv

ers.

Program devices and use device les for

pseudoterminals (pt

ys) or MUXes.

Access on-line DDF

Aman pages on y

our system like

ddfa(7), dp(4), dpp(1M), o cd(1M), o cdebug(1M), as

well as io ctl(2), io ctl(5), p cf(4), and termio(7).

1-2 Introduction

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