IBM ThinkPad 130 Reference manual

IBM 3745 Communication Controller
Models 130, 150, and 170 IBM
Introduction
GA33-0138-2

IBM 3745 Communication Controller
Models 130, 150, and 170 IBM
Introduction
GA33-0138-2

Third Edition (June 1991)
This major revision obsoletes and replaces GA33-0138-1. It reflects new enhancements to the IBM 3745 Communication Controller
Models 130, 150, and 170. Changes or additions to the text and illustrations are showed by a vertical line to the left of the change.
Changes are made periodically to the information in this publication; before using this publication in connection with the operation of
IBM systems, consult the latest
IBM System/370, 30xx, 4300, and 9370 Processor Bibliography, GC20-0001.
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IBM may use or distribute whatever information you supply in any way it believes appropriate without incurring any obligation to you.
 Copyright International Business Machines Corporation 1989, 1991. All rights reserved.
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or imply that only IBM's program or other product may be used. Any functionally equivalent program that
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Evaluation and verification of operation in conjunction with other products, except those expressly
designated by IBM, is the user's responsibility.
|The following paragraph does not apply to the United Kingdom or to any country where such
|provisions are inconsistent with local law.
|
INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION "AS IS"
| WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT
| LIMITED TO, THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
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| The following terms, DENOTED BY A DOUBLE ASTERISK (**), used in this publication, are trademarks of
| other companies:
IBM
|VTAM
|ES/9000
3090
LPDA
VM/XA
RETAIN
OS/2
PS/2
Personal Computer AT
Personal Computer XT
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NetView
ESA
MVS/XA
MVS/ESA
VSE
|Ethernet|XEROX Inc.
iii

Federal Communications Commission (FCC) Statement
Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own
expense.
Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. IBM is not responsible
for any radio or television interference caused by using other than recommended cables and connectors or by unauthorized changes
or modifications to this equipment. Unauthorized changes or modifications could void the user's authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
In addition to the above FCC statement, you should be aware that:
The statement applies only to IBM 3745-130/150/170 Communication Controllers used in the USA and
having a label on the back that indicates compliance.
The phrase
instruction manual means this manual and:
IBM System/360, System/370, 4300 Processors: Input/Output Equipment Installation Manual - Physical
Planning, GC22-7064
IBM 3745-130/150/170 Preparing for Connection, GA33-0140.
IBM 3745 Communication Controller: Connection and Integration, SA33-0141.
For Canada, Canadian Department of Communication Statement, GX27-3883 applies.
iv IBM 3745 Models 130, 150, 170: Introduction

IBM 3745 Communication Controller Model 130, 150, or 170 with an IBM 3151 Display Station as
Operator Console.
Note: This picture shows the design model only.
v

vi IBM 3745 Models 130, 150, 170: Introduction

About This Book
How to Use This Book
This book has been written to help you understand the basic concepts of IBM
communication controllers, and especially the key advantages and capabilities of
the IBM 3745 Communication Controller Models 130, 150, and 170 for your
network. These controllers and the appropriate programming support are
described; as well as the powerful problem determination mechanisms and the
controller maintenance philosophy. The text in color is for fast reading and
understanding the main functions of the product. The smaller black text describes
details for specialists to help them plan their network.
The charts at the back of the manual can be removed to make foils for
presentations when required.
Who Should Use This Book
This book is for network specialists, data processing managers, and planners who
want to learn about and evaluate the capabilities of the IBM 3745 Communication
Controller Models 130, 150, and 170 in their data communication network.
The reader is assumed to be familiar with data communication networks
Terms Used in This Book
A list of abbreviations is provided at the back of the book.
The term 3745 applies to the 3745 Models 130, 150, or 170. Sometimes the model
| numbers are added to 3745 when a precise discrimination between 3745 models
| 210/310/410/610 and 130/150/170 is necessary.
| The term Network Control Program (NCP) stands for Advanced Communications
| Function for the Network Control Program (ACF/NCP) when used alone.
The terms DCE and DTE used throughout this book stand for:
DCE Data circuit-terminating equipment (such as modems, data service units, or
auto-call units)
DTE Data terminal equipment.
What is New in This Book
The additional text, showed by revisions bars to the left, describes the latest
enhancements:
|Attachment to Ethernet** Version 2 and IEEE 802.3 local area network (LAN).
|Timed initial program load (IPL).
|Rename load module function.
 Copyright IBM Corp. 1989, 1991 vii

|3745 installation and reconfiguration improvements.
Where to Find More Information
The “Bibliography” on page X-11. lists 3745 manuals according to the user tasks
they describe.
viii IBM 3745 Models 130, 150, 170: Introduction

Contents
About This Book ................................... vii
How to Use This Book ................................. vii
Who Should Use This Book .............................. vii
Terms Used in This Book ............................... vii
What is New in This Book ............................... vii
Where to Find More Information ........................... viii
Chapter 1. Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
IBM 3745 Communication Controllers in a Typical Network .......... 1-3
3745 Model 170 Environment ........................... 1-4
3745 Model 150 Environment ........................... 1-4
3745 Model 130 Environment ........................... 1-5
IBM 3745-130/150/170 Communication Controller Connectivity ......... 1-6
IBM 3745 Models 130, 150, and 170 ....................... 1-8
Chapter 2. IBM 3745 Models 130, 150, and 170 Highlights ......... 2-1
Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Usability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Serviceability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Chapter 3. Program Support and Network Management ........... 3-1
Controller-Resident Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Network Control Program (NCP) ......................... 3-1
Partitioned Emulation Programming Extension ................. 3-2
Generating and Loading the Control Program .................. 3-2
Multiple Load Module ................................ 3-3
Automatic Control Program Load ......................... 3-4
Coexistence and Migration ............................. 3-5
Host-Resident Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Access Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
System Support Programs ............................. 3-6
Network Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Chapter 4. Controller Description . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Control Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Central Control Unit ................................. 4-2
Channel Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Communication Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Transmission Subsystem (TSS) .......................... 4-7
Low-Speed Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
LIC Base (LIB) ................................... 4-10
High-Performance Transmission Subsystem (HPTSS) ............ 4-17
Communication Scanner Processor ....................... 4-17
Front-End Scanner High-Speed ......................... 4-17
Token-Ring Subsystem (TRSS) ......................... 4-18
Token-Ring Multiplexer (TRM) .......................... 4-18
Token-Ring Interface Coupler (TIC) ....................... 4-18
 Copyright IBM Corp. 1989, 1991 ix

| Ethernet-Type LAN Subsystem (ESS) ..................... 4-19
Maintenance and Operator Subsystem (MOSS) ................. 4-20
Operator Consoles and Remote Support Facility ............... 4-24
MOSS Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
MOSS User Facilities ............................... 4-30
Chapter 5. Problem Determination . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Error Detection and Reporting ............................ 5-1
NetView Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Box Event Records ................................. 5-3
AutoBER Program and Refcode ......................... 5-4
Retry and Recovery ................................. 5-4
Chapter 6. Controller Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Remote Support Facility ................................ 6-4
Installation and Upgrade ................................ 6-5
3745-130/150/170 General Data Flow ........................ 6-6
Appendix A. Data Clocking . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Data Clocking for Low-Speed Scanners ...................... A-1
Data Clocking for High-Speed Scanners ..................... A-3
List of Abbreviations ................................ X-1
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-5
Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-11
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-13
Foils for Customer Presentations ........................ X-17
xIBM 3745 Models 130, 150, 170: Introduction

Chapter 1. Highlights
In today's communication networks, the communication controllers save much data
processing power by handling sophisticated functions to control the data flow
between host processors and the network of terminals.
The IBM communication controllers are intelligent and multifunctional systems
dedicated to communications. They are able to serve as nodes (data processing
center nodes, distributed data processing center nodes, concentrator access nodes,
intermediate routing nodes) in the network.
Intelligent refers to their ability to dynamically alter certain characteristics of the
network, like routes.
Multifunctional refers to their capability of taking advantage of the SNA software
facilities stored in the IBM communication controllers to perform functions such as:
 Route selection
 Multihost access
 Data switching
 Network management
 Message sequencing
 Pacing
 Flow control.
in addition to the physical transmission and reception of data.
 Copyright IBM Corp. 1989, 1991 1-1

The IBM communication controllers run under control of the Network Control
Program (NCP) stored in their own storage and generated in the host using the
System Support Programs (SSP).
1-2 IBM 3745 Models 130, 150, 170: Introduction

IBM 3745 Communication Controllers in a Typical Network
Chapter 1. Highlights 1-3

3745 Model 170 Environment
4 Channel adapters
96 Low/medium-speed lines
32 Integrated DCEs (Modems/DSUs)
4 High-speed lines (2 active at a time)
2 Token-rings
| 4 Ethernet-type LANs
| NOTE: All the above connection capabilities might not be present at the same
| time as some items are mutually exclusive (see IBM 3745 Configuration
| Program, GA33-0093).
3745 Model 150 Environment
32 Low/medium-speed lines
16 Integrated DCEs (Modems/DSUs)
2 High-speed lines (1 active at a time)
2 Token-rings
| 2 Ethernet-type LANs
NOTE: All the above connection capabilities might not be present at the same
time as some items are mutually exclusive (see IBM 3745 Configuration
Program, GA33-0093).
1-4 IBM 3745 Models 130, 150, 170: Introduction

3745 Model 130 Environment
4 Channel adapters
4 High-speed lines (2 active at a time)
4 Token-rings
| 4 Ethernet-type LANs
NOTE: All the above connection capabilities might not be present at the same
time as some items are mutually exclusive (see IBM 3745 Configuration
Program, GA33-0093).
Chapter 1. Highlights 1-5

IBM 3745-130/150/170 Communication Controller Connectivity
The following figure shows that, a 3745-130/150/170 can be:
1 Channel-attached (via a channel adapter) to one or more hosts.
2 Link-attached (via telecommunication facilities) to a host through another IBM
communication controller (allowing a 3745-130/150/170 to be used as a
remote concentrator).
Then, the 3745-130/150/170 allows simultaneous connection to:
a Other IBM communication controllers, via high-speed lines (such as T1 or
CEPT) and their associated DCEs.
b Other IBM communication controllers, via medium or high-speed lines and
their associated DCEs.
c Local clusters and terminals, directly attached without DCE.
d Remote clusters and terminals, via stand-alone DCEs and telecommunication
facilities (switched or nonswitched).
e Remote communication controllers, clusters, and terminals, via X.25 public
data networks.
f Remote communication controllers, clusters, and terminals, via integrated
DCEs and 4-wire nonswitched telecommunication facilities or DDS network in
U.S.A.
|g Communication controllers, clusters, and terminals on IBM token-ring local
| area networks or on Ethernet-type local area networks.
1-6 IBM 3745 Models 130, 150, 170: Introduction

These capabilities allow network growth by permitting combinations of
3745-130/150/170 with other IBM communication controllers.
| Different combinations of channel, transmission line, Ethernet-type network, and
| token-ring network attachments are possible.
The modularity of the 3745-130/150/170 hardware and control programs provides a
high degree of flexibility in configuring and reconfiguring the networks.
The host processors connected to a 3745-130/150/170 can be the IBM 4341, 4361,
| 4381, 937X, 308X, 3090*, or ES/9000* Processors.
Chapter 1. Highlights 1-7

IBM 3745 Models 130, 150, and 170
The 3745 Communication Controller Models 130, 150, and 170 complement the
| IBM 3745 communication controller family and are compatible with IBM
| communication controllers: 3705, 3725, 3720, 3745 models 210, 310, 410, and 610.
|3745
|130
|3745
|150
|3745
|170
|3745
|210
|3745
|310
|3745
|410
|3745
|610
|CCU
|Main storage (MB)
|Channel adapters
|Low/medium-speed lines
|Integrated DCEs (Modems/DSUs)
|High-speed lines
|Token-rings
|Ethernet-type LANs
|1
|8
|4
|0
|0
| 4*
|4
|4
| 1
| 8
| 0
|32
|16
| 2*
| 2
| 2
| 1
| 8
| 4
|96
|32
| 4*
| 2
| 4
| 1
| 8
| 16
|896
|416
| 16*
| 8
| 16
| 1
| 8
|16
|896
|416
| 16*
| 8
| 16
| 2
|2 x 8
| 16
|896
|416
| 16*
| 8
| 16
| 2
|2 x 8
| 16
|896
|416
| 16*
| 8
| 16
* Half are active at one time
NOTE: All the above connection capabilities might not be present at the same
time as some items are mutually exclusive (see IBM 3745 Configuration
Program, GA33-0093).
1-8 IBM 3745 Models 130, 150, 170: Introduction