DEC DECrepeater 90T Manual de usuario
DECrepeater90TOwner’sManual
Order Number EK–DETMR–OM.001
Digital Equipment Corporation
August 1991
The information in this document is subject to change without notice and should not
be construed as a commitment by Digital Equipment Corporation. Digital Equipment
Corporation assumes no responsibility for any errors that may appear in this document.
The software described in this document is furnished under a license and may be used or
copied only in accordance with the terms of such license.
No responsibility is assumed for the use or reliability of software on equipment that is not
supplied by Digital Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U. S. Government is subject to
restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and
Computer Software clause at DFARS 252.227–7013.
Copyright © Digital Equipment Corporation 1991
All Rights Reserved.
Printed in U.S.A.
FCC NOTICE: The equipment described in this manual generates, uses, and may emit
radio frequency energy. The equipment has been type tested and found to comply with
the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC
Rules, which are designed to provide reasonable protection against such radio frequency
interference when operated in a commercial environment. Operation of this equipment in
a residential area may cause interference, in which case the user at his own expense may
be required to take measures to correct the interference.
The following are trademarks of Digital Equipment Corporation: DEC, DECbridge,
DECconnect, DEChub, DECnet, DECserver, Digital, LAT, ThinWire, VMS, VAX, and the
Digital logo.
This document was prepared and published by Educational Services Development and
Publishing, Digital Equipment Corporation.
Contents
About This Manual vii
1 INTRODUCTION
Features .............................................. 1
Quick Start ........................................... 3
LEDs and Connectors ................................... 4
2 Configuration
Configuration Rules ..................................... 6
Port Partitioning ....................................... 7
3 INSTALLATION
Standalone Installation . . . ............................... 8
Table Mounting ...................................... 8
Wall Mounting ....................................... 8
Connect the cables. ................................... 11
Install and Verify Devices. .............................. 13
Backplane Installation ................................... 13
Install and verify devices. .............................. 16
4 Management
Managing the DECrepeater 90T ........................... 17
Functions ........................................... 17
Components Needed................................... 18
Accessing the Maintenance Operations Protocol from VMS ..... 18
Accessing the Maintenance Operations Protocol from ULTRIX . . 19
iii
iv Contents
Console Carrier User Interface . . . ....................... 20
Console Carrier Command Language. ....................... 21
Command Parameters Description . ....................... 21
Command Descriptions . ............................... 22
Typical Management Techniques ........................... 27
Remote Network Management Using the DECbridge 90 . ...... 27
Management Disconnect ............................... 27
Messages ............................................. 31
Stand-alone Configuration Management ................... 33
5 Troubleshooting
DECrepeater 90T Standalone Troubleshooting . ............... 35
DECrepeater 90T Backplane Configuration Troubleshooting ...... 39
A DECrepeater 90T Specifications
Physical Dimensions .................................... 42
Environmental Specifications .............................. 43
Operating Environment . ............................... 43
Shipping Environment Specifications ...................... 43
Electrical Specifications . . . ............................... 44
Power Supply . ....................................... 44
DECrepeater 90T ..................................... 44
MJPinOut ........................................... 45
Parts List ........................................... 45
B Related Documentation
C Management Details
Designating a Hub Manager .............................. 48
Annotating the Bridge Address Table ....................... 49
Using the WGB Address Table for Work Group Management
Documentation ....................................... 50
Index
Contents v
Tables
1–1 Status LEDs ..................................... 4
2–1 Basic Configuration Rules ........................... 6
2–2 DECrepeater 90T Fault and Non-fault conditions . . . ...... 7
4–1 Summary of DECrepeater 90 Commands. ............... 21
4–2 DECbridge 90 Messages............................. 31
4–3 DECrepeater Status LEDs ........................... 34
5–1 Troubleshooting a DECrepeater 90T Standalone Unit ...... 35
5–2 Troubleshooting a DECrepeater 90T in a DEChub 90
Backplane ....................................... 39
A–1 MJPinOut ...................................... 45
A–2 Parts List . ....................................... 45
AboutThisManual
This guide describes how to install, operate, and maintain the Digital
Ethernet Twisted Pair Multiport Repeater - the DECrepeater 90T. The
DECrepeater 90T is a 9-port repeater designed for standalone operation
or as a managed repeater in the DEChub 90 Ethernet backplane.
Organization
This manual contains five chapters and three appendices.
• Chapter 1 provides an overview of the Ethernet Twisted Pair
Multiport Repeater and briefly describes the product’s features.
• Chapter 2 describes the configuration rules and conditions of operation
for the Ethernet Twisted Pair Multiport Repeater in a ThinWire
Ethernet system or standard Ethernet network.
• Chapter 3 provides instructions for installing the Ethernet Twisted
Pair Multiport Repeater.
• Chapter 4 provides information on managing the Ethernet Twisted
Pair Multiport Repeater on a network.
• Chapter 5 provides basic troubleshooting information.
• Appendix A details the system specifications and the parts list.
• Appendix B provides a list of related documents to help you become
more familiar with your new system.
• Appendix C provides more detailed information on management
issues.
Digital Internal User Only vii
viii About This Manual
Conventions
Convention Meaning
NOTE Provides general information.
!
A number in a black circle in text refers to
the corresponding number in an accompanying
illustration.
SHOW ADDRESS In text, commands are shown in all upper case
letters to differentiate them from regular text.
For the VMS operating system, you can enter
commands in either upper case or lower case
letters. For the ULTRIX operating system,
commands must be entered as indicated in the
examples.
DECbridge> Text that the system displays on the screen is
shown in monospaced type.
SHOW REPEATER 1 Text that you enter is shown in bold
monospaced type.
Digital Internal User Only
1
INTRODUCTION
This chapter describes the DECrepeater 90T features and summarizes the
installation procedures.
Features
The DECrepeater 90T has the following features:
• Eight twisted pair ports
• One ThinWire port
• Operates as a standalone unit or as a managed repeater in a DEChub
90 with a DECbridge 90
• Backplane installable
The DECrepeater 90T is a 9-port repeater designed for the IEEE 802.3
CSMA/CD networks. The DECrepeater 90T has one ThinWire port and
eight twisted pair ports. The ThinWire port complies with the IEEE 802.3
standard for 10Base2 networks. The twisted pair ports comply with the
same standard for 10BaseT.
The repeater can be used in a standalone configuration or as a managed
repeater when it is installed in a Digital DEChub 90 Ethernet backplane
with a DECbridge 90. When operating as a standalone repeater, it is a
9-port unmanaged repeater with a separate power supply connected to
the unit by a cable with a 7-pin connector. The power supply is modular
and accommodates either a North American 120 Volt or an international
auto-ranging 240 Volt wall outlet. The following figure shows a typical
configuration of the DECrepeater 90T in an Ethernet Local Area Network
(LAN).
Digital Internal User Only 1
2 INTRODUCTION
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WORKSTATION WORKSTATION DECSERVER |
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DECrepeater 90T DECrepeater 90C DECserver 90L
Segment
Work Group Bridge
Work Group −−− −−
COMPUTER 2
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Work Group
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PC
DECbridge 90
Backbone
SERVER
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COMPUTER 1
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Ethernet
ThinWire
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Digital Internal User Only
Tabla de contenidos
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