A Stratus FDDI Service Bulletin - .A Stratus FDDI Service Bulletin. ... local area network is a timed-token

HB-061070April, 1995

StratusCustomer ServicePublications

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Stratus FDDI Service Bulletin

StratusCustomer ServicePublications

FDDI Service Bulletin

Notice

The information contained in this document is subject to change without notice.

STRATUS COMPUTER, INC. MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL,INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESSFOR A PARTICULAR PURPOSE. Stratus Computer, Inc., shall not be liable for errors contained herein or incidental orconsequential damages in connection with the furnishing, performance, or use of this material.

FTX, Stratus, and the Stratus logo are registered trademarks, and Continuous Processing and Continuum are trademarksof Stratus Computer, Incorporated.

Manual Name: FDDI Service BulletinPart Number: HB-061050Revision Number: 0First Printing: April 1995

Stratus Computer, IncorporatedCustomer Service Documentation Department55 Fairbanks BoulevardMarlboro, MA 01752-1298

Warning

The equipment documented in this manual generates and uses radio frequency energy, which if not installed and used instrict accordance with the instructions in this manual, may cause harmful interference to radio communications. Theequipment has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J ofPart 15 of FCC rules, which are designed to provide reasonable protection against such interference when operated in acommercial environment.

Operation of this equipment in a residential area is likely to cause interference, in which case the user at his own expensewill be required to take whatever measures may be required to correct the interference.

THIS DOCUMENT CONTAINS STRATUS PROPRIETARY AND CONFIDENTIAL INFORMATION. IT IS PRO-VIDED TO YOU AND ITS USE IS LIMITED BY THE TERMS OF YOUR CONTRACTUAL ARRANGEMENTWITH STRATUS REGARDING MAINTENANCE AND DIAGNOSTIC TOOLS.

Copyright 1995 by Stratus Computer, Inc. All rights reserved.

Preface

FDDI Service Bulletin (HB-061050) iii

Preface

The FDDI Service Bulletin (HB-061050) contains information on how to install and service the FDDI sub-system in accordance with Stratus servicing policies.

This document is organized as follows:

Section 1 FDDI Overview

Section 2 Stratus FDDI Product Introduction

Section 3 Configurations

Section 4 Theory of Operation

Section 5 Installation Procedures

Section 6 Initial Start-up and Troubleshooting

Section 7 Removal and Replacement

Audience

This guide is intended for authorized service personnel who install and maintain Stratus systems, and who havecompleted Stratus field-service training courses.

Related Documentation

For information on how to administer the FDDI subsystem, refer to the FTX FDDI Administratorss Guide(R381X-00).

Document Conventions

This manual uses different fonts to indicate file names, computer input, computer output, as well as variables.

Computer Input

Example of system input (commands) is displayed in bold courier font.

Computer Output

Examples of output displayed on the system console appears in courier font.

User-Supplied Values

Examples of user defined variables appear in italic courier font.

Preface

iv FDDI Service Bulletin (HB-061050)

Problems, Questions, and Suggestions

You can comment on this manual by sending email to CSM_Comments. Comments received are evaluated andadded to the CSM bug list. You may also comment on this manual by filling out the survey form at the back ofthis book and mailing it in.

Stratus welcomes any corrections and suggestions for improving this manual.

Safety

While operating Stratus equipment, the user should be aware of any precautions which must be followed toensure data reliability and personal safety. These precautions appear in the following format.

CAUTION: We recommend that the system be shutdown during this procedure. If theinstallation is done while powered on, use extreme caution while installing the interfacecable.

Contents

FDDI Service Bulletin (HB-061050) v

Preface1. FDDI Overview .......................................................................................................................................... 12. Stratus FDDI Product Introduction .......................................................................................................... 13. Configurations ............................................................................................................................................ 2

3.1 Hardware Requirements ..................................................................................................................... 23.2 Operating System Requirements ........................................................................................................ 33.3 Network Connection............................................................................................................................ 33.4 Part Numbers ...................................................................................................................................... 5

4. Theory of Operation .................................................................................................................................. 54.1 I104 FDDI Controller ......................................................................................................................... 54.2 K130 IOA Card .................................................................................................................................. 74.3 I104 to K130 Interface Cable ............................................................................................................. 74.4 K200 IOP Controller .......................................................................................................................... 7

5. Installation Procedures .............................................................................................................................. 85.1 K130 IOA Card Installation and Interface Cable Attachment ........................................................... 85.2 I104 Controller Board Installation and Interface Cable Attachment ................................................ 10

6. Initial Start-up and Troubleshooting ..................................................................................................... 116.1 Initial Start-up ................................................................................................................................... 126.2 Troubleshooting Checklist ................................................................................................................ 126.3 FDDI Subsystem Self-Test Indications ............................................................................................ 12

6.3.1 K130 IOA Missing or Broken ............................................................................................. 136.3.2 I104 Broken ......................................................................................................................... 136.3.3 Missing Interface Cable........................................................................................................ 136.3.4 Self-Test Failures at Initialization ........................................................................................ 13

7. Removal and Replacement ...................................................................................................................... 147.1 I104 FDDI Controller Board Removal ............................................................................................ 147.2 K130 IOA Card Removal ................................................................................................................. 147.3 Interface Cable Removal .................................................................................................................. 14

List of FiguresFigure 1. Stratus Dual Attach Network Topology Diagram ........................................................................... 4Figure 2. Stratus FDDI Subsytem Block Diagram.......................................................................................... 6Figure 3. Securing the Interface Cable to the K130 IOA Card ..................................................................... 9Figure 4. I104 Controller Board in Logic Chassis......................................................................................... 10Figure 5. Interface Cable Connection to C-Connector Chassis .................................................................... 11

List of TablesTable 1. I104 FDDI Controller Slot Assignments ......................................................................................... 2Table 2. Stratus FDDI Subsystem Part Numbers .......................................................................................... 5

FDDI Service Bulletin (HB-061050) 1

1. FDDI Overview

The Fiber Distributed Data Interface (FDDI) local area network is a timed-token protocol and dual ringof trees topology. It operates at 100 mb per second and utilizes 62.5/125 micron graded index multi-mode fiber optic cabling. FDDI is a component part of LAN integration. It offers a tenfold increase inspeed over the IEEE 802.3 Ethernet standard.

The following are the major design concepts that comprise the FDDI protocol.

hardware connection

ring initialization

error detection

token handling

overall station management

Four ANSI standard