Digital Equipment DECrepeater 90FA User manual
DECrepeater90FA
Owner’sManual
Order Number: EK–DEFAR–OM. B01
Revision/Update Information: This is a revised manual.
Digital Equipment Corporation
Maynard, Massachusetts
First Edition, September 1992
Second Edition, January 1994
Possession, use, or copying of the software described in this publication is authorized only pursuant
to a valid written license from Digital or an authorized sublicensor.
Digital Equipment Corporation makes no representations that the use of its products in the
manner described in this publication will not infringe on existing or future patent rights, nor do
the descriptions contained in this publication imply the granting of licenses to make, use, or sell
equipment or software in accordance with the description.
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.
© Digital Equipment Corporation 1992, 1994. All rights reserved.
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: BI, DEC, DECbridge, DECconnect,
DECmcc, DECnet, DECserver, Digital, LAT, MicroVAX, ThinWire, ULTRIX, UNIBUS, VAX,
VAX–11/780, VAX–11/785, VAX 3600, VAX 3900, VAX 6000, VAX 6300, VAX 6400, VAX 9000,
VAXcluster, VAX DOCUMENT, VAXELN, VAXstation, VMS, VT, and the DIGITAL logo.
ST is a registered trademark of American Telephone & Telegraph Company.
All other trademarks and registered trademarks are the property of their respective holders.
This document was prepared using VAX DOCUMENT Version 2.1.
Contents
About This Manual...................................... vii
1 Overview
Features ............................................. 1–1
LEDs and Connectors . . . ............................... 1–2
2 Configuring the DECrepeater 90FA
Configuration Rules .................................... 2–1
Segment Length Constraints . . . ....................... 2–1
Network Constraints . ............................... 2–2
Installed Fiber Constraints ........................... 2–5
3 Installation
Site Considerations .................................... 3–1
Standalone Installation . . ............................... 3–1
Mount the DECrepeater 90FA on a Wall . . ............... 3–2
Standalone Installation Connections .................... 3–4
Backplane Installation . . . ............................... 3–6
4 Managing the DECrepeater 90FA
Functions ............................................ 4–1
Components Needed.................................... 4–1
Accessing MOP from VMS Systems . ....................... 4–2
Accessing a Bridge Repeatedly . . ....................... 4–3
Accessing MOP from ULTRIX Systems ..................... 4–3
Console Carrier User Interface ........................... 4–4
Console Carrier Command Language....................... 4–4
Description of Command Parameters .................... 4–6
Description of Commands ............................... 4–7
iii
Typical Management Techniques . . . ....................... 4–13
Remote Network Management with the DECbridge 90 ...... 4–14
Management Disconnect ............................. 4–14
Management Session . ............................... 4–15
Example of a Typical Management Session ............ 4–15
If Problems are Reported . . . ....................... 4–16
To Disable a Port . ............................... 4–17
To Reset the Repeater ............................ 4–17
Error Messages ....................................... 4–18
Standalone Configuration Management ..................... 4–20
5 Troubleshooting
Port Partitioning ...................................... 5–1
DECrepeater 90FA Standalone Troubleshooting .............. 5–3
DECrepeater 90FA Backplane Troubleshooting ............... 5–8
A Specifications and Parts List
AUI Connector Pin Assignments . . . ....................... A–4
Parts List ............................................ A–5
B Management Details
Designating a Hub Manager ............................. B–1
Annotating the Bridge Address Table ...................... B–2
Using the WGB Address Table for Work Group Management .... B–3
C Related Documentation
Ordering Information ................................... C–1
Continental USA and Puerto Rico ...................... C–1
New Hampshire, Alaska, and Hawaii ................... C–1
Outside the USA and Puerto Rico ...................... C–1
Digital Personnel ................................... C–2
iv
Index
Figures
1–1 DECrepeater 90FA LEDs and Connectors .......... 1–2
2–1 DECrepeater 90FA Repeater Path ............... 2–3
2–2 DECrepeater 90FA Typical DEChub 90 Configuration
........................................... 2–4
3–1 Removing the Back Cover ...................... 3–2
3–2 Mounting Screws ............................. 3–3
3–3 Standalone Installation . ....................... 3–5
3–4 Installing the DECrepeater 90FA into the DEChub
90......................................... 3–7
4–1 Sample Configuration . . ....................... 4–13
4–2 Typical Network Topology Map . . . ............... 4–15
Tables
1–1 DECrepeater 90FA LEDs and Connectors .......... 1–3
2–1 Segment Lengths ............................. 2–1
4–1 Ethernet Circuit Names for Systems .............. 4–2
4–2 Summary of DECbridge 90FA Commands .......... 4–5
4–3 DECbridge 90 Messages . ....................... 4–18
5–1 DECrepeater 90FA Status Indicators .............. 5–2
5–2 DECrepeater 90FA Fiber-Link Indicators .......... 5–2
5–3 Troubleshooting a DECrepeater 90FA Standalone
Unit ....................................... 5–3
5–4 Troubleshooting a DECrepeater 90FA in a DEChub 90
Backplane . . . ............................... 5–8
A–1 Physical Dimensions . . . ....................... A–1
A–2 Operating Environment . ....................... A–2
A–3 Shipping Environment . . ....................... A–2
A–4 Power Specifications........................... A–3
A–5 DECrepeater 90FA Input ....................... A–3
A–6 Parts List ................................... A–5
v
About This Manual
This manual describes how to install, operate, and maintain the DECrepeater 90FA
repeater. The DECrepeater 90FA is a three-port repeater designed to function as
a standalone unit or as a managed unit in a DEChub 90 backplane.
In this manual, the DECrepeater 90FA unit may be referred to as the
DECrepeater 90FA or the repeater.
Organization
This manual contains five chapters and three appendices.
Chapter Description
1 Provides an overview of the DECrepeater 90FA and briefly describes
the product’s features.
2 Describes the configuration rules and conditions of operation for the
DECrepeater 90FA in a ThinWire Ethernet system or fiber-optic
network.
3 Describes how to install the DECrepeater 90FA.
4 Describes how to manage the DECrepeater 90FA.
5 Provides basic troubleshooting information.
Appendix A Provides the physical dimensions, environmental (operating and
shipping) specifications, electrical specifications, and a parts list.
Appendix B Provides more detailed information on management issues.
Appendix C Provides a list of related documentation and ordering information.
vii
Conventions
The following conventions are used in this manual:
Convention Meaning
Note Provides general information.
!
A number in a black circle in text refers to the
corresponding number in an accompanying figure.
[] In command descriptions, brackets indicate
optional elements.
variables In command descriptions, italic type indicates a
variable that you supply.
SHOW ADDRESS In text, commands are shown in all uppercase
letters to differentiate them from regular text. For
VMS operating systems, you can enter commands
in either uppercase or lowercase letters. For
ULTRIX operating systems, 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.
viii
1
Overview
This chapter describes the DECrepeater 90FA repeater and briefly summarizes
the features of this repeater.
The DECrepeater 90FA is a three-port repeater designed for IEEE 802.3 standard
CSMA/CD networks. The DECrepeater 90FA has one ThinWire port, one
fiber-optic port, and one 15-pin AUI port. The ThinWire port complies with the
IEEE 802.3 standard for 10Base2 networks; the fiber-optic port complies with
the IEEE 802.3 standard for 10Base-FL networks; and the AUI port complies
with the IEEE 802.3 standard for Attachment Unit Interfaces. The 10Base-FL
standard allows backward compatibility of the DECrepeater 90FA to Fiber Optic
Inter Repeater Link (FOIRL) compliant products.
The DECrepeater 90FA can operate in a standalone configuration or as
a managed repeater when installed in a DEChub 90 backplane with a
DECbridge 90 series bridge.
When operating as a standalone unit, the DECrepeater 90FA is an unmanaged
repeater with a separate power supply connected to the repeater by a cable with
a 7-pin connector. The auto-ranging power supply is modular and accommodates
either a North American 120-volt or an international 240-volt wall outlet.
Features
The following list summarizes the main features of the DECrepeater 90FA:
• One ThinWire (10Base2) port
• One fiber-optic link (10Base-FL) port
• One 15-pin AUI Ethernet port
• Standalone or installable in a DEChub 90 backplane
• Manageable when installed in a DEChub 90 backplane
For detailed information about how to configure the DECrepeater 90FA, see
Chapter 2, Configuring the DECrepeater 90FA. For detailed information about
how to install and use the DECrepeater 90FA, see Chapter 3, Installation.
Overview 1–1
LEDs and Connectors
The front panel of the DECrepeater 90FA contains several indicator lights (LEDs)
and connectors. These LEDs and connectors are described in Table 1–1 and are
shown in Figure 1–1.
Figure 1–1 DECrepeater 90FA LEDs and Connectors
PJ-D120
REDUCE .45
ORG
LJ-02371-TI0
12
11
13
9
1
3
5
2
4
6
7
8
10
1–2 Overview
Table of contents
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