Digital Equipment DECrepeater 90FS Operating and maintenance instructions

DECrepeater 90FS
Installation and Configuration
Part Number: EK–DEFMI–IN. A01
August 1994
This manual describes how to install and configure the
DECrepeater 90FS module.
Revision/Update Information: This is a new manual.

Copyright
August 1994
The information in this document is subject to change without notice and should not be construed as a
commitmentbyDigitalEquipmentCorporation.DigitalEquipmentCorporationassumesnoresponsibilityforany
errors that may appear in this document.
Copyright 1994 by Digital Equipment Corporation.
All rights reserved. Printed in U.S.A.
The postage-paid Reader’s Comments form at the back of this document requests your evaluation of this
document to assist us in preparing future documentation.
The following are trademarks of Digital Equipment Corporation: DEC, DECconnect, DEChub, DEChub ONE,
DECndu, DECndu Plus, DECrepeater, Digital, HUBwatch, MultiSwitch, OpenVMS, ThinWire, ULTRIX, VAX,
VMS, and the DIGITAL logo.
MS-DOS is a registered trademark of Microsoft Corporation.
ST is a registered trademark of American Telephone and Telegraph Company.
FCC NOTICE —Class A Computing Device:
Thisequipmentgenerates,uses,andmayemitradiofrequencyenergy.Theequipmenthasbeentypetestedand
found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules,
whicharedesignedtoprovidereasonableprotectionagainstsuchradiofrequencyinterferencewhenoperatedin
acommercial environment. Operation of this equipment in a residential area may cause interference; in which
case, measures taken to correct the interference are at the user’s expense.
VCCI NOTICE —Class 1 Computing Device:
This equipment is in the 1st Class category (information equipment to be used in commercial and/or industrial
areas) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing
EquipmentandElectronicOfficeMachinesaimedatpreventingradiointerferenceincommercialand/orindustrial
areas. Consequently, when used in a residential area or in an adjacent area thereto, radio interference may be
caused to radios and TV receivers.
Read the instructions for correct handling.
CE NOTICE – Class A Computing Device:
Warning!
ThisisaClassAproduct. Inadomesticenvironmentthisproductmaycauseradiointerference,inwhichcasethe
user may be required to take adequate measures.
Achtung!
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes
Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende Gegenmaßnahmen
verantwortlich ist.
Attention!
CeciestunproduitdeClasseA. Dans un environment domestique, ce produit risque de créer des interférences
radioélectriques, il appartiendra alors à l’utilisateur de prendre les mesures spécifiques appropriées.

iii
Contents
Safety
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Back Panel 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Module 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Module as a Standalone Unit 5. . . . . . . . . . . . . . . . . . . . . . . .
Removing the Back Cover 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Module into a DEChub 900 9. . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Module into a DEChub 90 11. . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting the Cables 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Module 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the Module 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup Port Description 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup Port Device Cabling 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessing the Setup Port 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start Redirect Mode 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DECrepeater 90FS Installation Menu (DEChub 90/Standalone Options) 22
DECrepeater 90FS Installation Menu (DEChub 900 Options) 23. . . . . . . . .
Description of Menu Options 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LED Descriptions 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Problem Solving Using the LEDs 48. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normal Powerup 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector Pin Assignments 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AUI (15-pin D-Sub) Connector 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Port (8-pin MJ) Connector 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H8571-J Adapter 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H8575-A Adapter 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iv
Contents (Cont.)
H8585-AC Adapter 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H8584-AA Adapter 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H8585-AA Adapter 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Redundant Fiber-Optic Link Configuration 55.. . . . . . . . . . . . . . . . .
Redundant Fiber-Optic Link Overview 55. . . . . . . . . . . . . . . . . . . . . . . . . . .
Redundant Fiber-Optic Link Components 55. . . . . . . . . . . . . . . . . . . . . . . . .
Redundant Fiber-Optic Link Operation 57. . . . . . . . . . . . . . . . . . . . . . . . . .
Simple Redundant Link Configuration 58. . . . . . . . . . . . . . . . . . . . . . . . . . .
Complex Redundant Link Configuration 59. . . . . . . . . . . . . . . . . . . . . . . . .
Partial Fault Detection 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Full Fault Detection 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommendations for Redundant-Link Configuration 62. . . . . . . . . . . . . . .
Fiber-Optic Loss Budget 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10BaseFL Loss Budget 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FOIRL Compatibility 64. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Specifications 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Associated Documents 68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
1 DLU Process Description 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Module LED States 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Problem Solving Using the LEDs 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Partial Fault Detection Versus Full Fault Detection 62. . . . . . . . . . . . . . .
5 10BaseFL Worst-Case Loss Budget 63. . . . . . . . . . . . . . . . . . . . . . . . . . .
6 FOIRL Worst-Case Loss Budget 64. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 DECrepeater 90FS Best-Case Maximum Launch Power 65. . . . . . . . . . .
8 Operating Specifications 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Acoustical Specifications 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

v
Safety !
Any warning or caution that appears in this manual is defined as follows:
WARNING Contains information to prevent personal injury.
CAUTION Contains information to prevent damage to equipment.
VORSICHT Enthält Informationen, die beachtet werden müssen, um
den Benutzer vor Schaden zu bewahren.
ACHTUNG Enthält Informationen, die beachtet werden müssen, um
die Geräte vor Schaden zu bewahren.
DANGER Signale les informations destinées à prévenir les acci-
dents corporels.
ATTENTION Signale les informations destinées à prévenir la détério-
ration du matériel.
AVISO Contiene información para evitar daños personales.
PRECAUCION Contiene información para evitar daños al equipo.

vi
Safety !(Cont.)
The cautions that must be observed for the hardware described in this manual are
listed below in English, German, French, and Spanish. The pages on which these
safety messages appear are also listed.
WARNING !Somefiberopticequipmentcanemitlaserorinfraredlightthat
can injure your eyes. Never look into an optical fiber or con-
nector port. Always assume the cable is connected to a light
source. [Pages 14 and 16.]
VORSICHT Bestimmte Lichtleitergeräte können für die Augen
gefährliches Laser– oder Infrarotlicht abstrahlen. Vermeiden
Sie es daher unter allen Umständen, direkt in ein Lichtleiter-
kabel oder einen Lichtleiteranschluß zu schauen. Gehen
Sie immer davon aus, daß Lichtleiterkabel mit einer Licht-
quelle verbunden sind.
DANGER Certains équipements à fibre optique peuvent émettre un
rayonnement laser ou infra–rouge pouvant provoquer des
troubles oculaires. Ne regardez jamais à l’intérieur d’une
fibre optique ou d’un port de connecteur. Considérez que le
câble est connecté en permanence à une source lumi-
neuse.
AVISO Ciertos equipos de fibras ópticas pueden emitir luz lasérica
oinfrarroja con riesgos de lesiones en los ojos. No se debe
nunca mirar en una fibra óptica o una puerta de conexión.
Siempre hay que suponer que el cable está conectado a
una fuente luminosa.

vii
Safety !(Cont.)
CAUTION !This action deletes all configured settings and replaces
them with factory default values. All configuration settings
will be lost. [Page 25.]
ACHTUNG Bei diesem Vorgang werden alle Konfigurationseinstel-
lungen gelöscht und die Werkseinstellungen wieder ein-
gesetzt. Alle Konfigurationsdaten gehen verloren.
ATTENTION Cette action supprime tous les paramètres de configura-
tion et les remplace par des valeurs prédéfinies. Tous
les paramètres de configuration seront perdus.
PRECAUCION Esta intervención borrará todos los parámetros de confi-
guración y los sustituirá por valores por defecto definidos
de fábrica. Se perderán todos los parámetros de configu-
ración.

viii
Safety !(Cont.)
CAUTION !If power is interrupted during Stage 3 of the DLU process,
the firmware image can become corrupted. Do not turn off
power to the unit or perform any action that can cause the
unit to lose power during Stage 3 of the DLU process.
[Pages 34, 36, and 39.]
ACHTUNG Sollte während der Phase 3 des DLU–Prozesses eine
Unterbrechung der Stromversorgung eintreten, kann das
Firmwareprogramm zerstört werden. Aus diesem Grunde
wird dringend empfohlen, Vorkehrungen zu treffen, daß
während der Durchführung dieser Phase 3 die System-
einheit weder ausgeschaltet noch die Stromversorgung
unterbrochen werden kann.
ATTENTION L’image du microprogramme risque d’être corrompue, en
cas de coupure de courant au cours de l’étape 3 du pro-
cessus DLU. Ne mettez pas l’unité hors tension et n’exé-
cutez aucune action risquant d’entraîner une coupure
d’alimentation au cours de cette étape.
PRECAUCION Si se interrumpe el suministro eléctrico durante la Etapa
3del proceso DLU, puede dañarse la imagen del firm-
ware. No se debe apagar la unidad ni realizar ninguna
operación que pueda causar una interrupción del sumi-
nistro de la unidad durante la Etapa 3 del mencionado
proceso.

1DECrepeater 90FS Installation and Configuration
Introduction
TheDECrepeater90FS(alsoreferredtointhismanualasthemodule)isanEthernet
repeaterthatprovidestwoexternal10BaseFLfiber-optic ports and oneexternalAUI
port.
Inthismanual,theterm10BaseFLreferstotheInternationalStandardsOrganization
(ISO) 8802-3/ANSI/IEEE 802.3 fiber-optic local area networks (LAN) standards.
Inthismanual,the termEthernetisDigital’stermfor its product compatibility with the
ISO 8802-3/ANSI/IEEE 802.3 standards and the Ethernet standards for Carrier
Sense Multiple Access with Collision Detection (CSMA/CD) LANs.
To give your workgroup LAN media flexibility and connectivity, the module can be
configured into a DEChub 900 MultiSwitch (also referred to in this manual as the
DEChub 900), into a DEChub 90, or as a standalone unit. One or more (up to eight)
can be installed into a DEChub 900.
When installing the module into a DEChub 900 or in a DEChub 90, the module’s
hot-swap capability allows you to install or remove the module without turning off
power.
ThemoduleprovidesasidepanelThinWireportconnector,usedwhenthemoduleis
installed as a standalone unit. The module provides a ThinWire port connection to
the backplane when the module is installed in a DEChub 900 or a DEChub 90.
The module’s front panel provides two fiber-optic ports that can operate
independently or as a redundant pair, and one attachment unit interface (AUI) port.
The front panel also provides light-emitting-diodes (LEDs) that indicate the status of
the module, the ports, and the network.
The module includes a serial port on the front panel that can be used as an
installationsetupportwhenthemoduleisinstalledintoaDEChub90orinstalledasa
standalone unit. Using the setup menu, you can enable the module’s front panel
serial port for Out-of-Band Management (OBM).
NOTE: When the module is installed in a DEChub 900, you
must use the Hub Manager setup port on the DEChub
900 instead of the module’s setup port.

2DECrepeater 90FS Installation and Configuration
Introduction (Cont.)
Features
Your DECrepeater 90FS module includes the following features:
•ThinWire,10Base2 portavailableasanexternalconnectiononthemoduleside
panel (when the module is installed as a standalone unit) or to the backplane
segment in a DEChub 900 or a DEChub 90.
•BackplaneaccesstoanotherEthernetLANthroughasingleflexiblechannelina
DEChub 900.
•Automatic module self-test at powerup.
•Port-level packet address security.
•In-band Simple Network Management Protocol (SNMP) management.
•OBM using SNMP over Serial Line Internet Protocol (SLIP) provides an addi-
tional path to the normal in-band management as follows:
–Through the OBM connector on the DEChub 900 Hub Manager
–Through the front-panel serial port on the module when the module is
installed into a DEChub 90 as a standalone unit.
•Built-in SNMP agent supports the following management information bases
(MIBs):
–Ethernet-like Interface Type MIB (RFC 1398)
–Internet Engineering Task Force (IETF) Repeater MIB (1516)
–Digital Extended Repeater MIB
–DEChub 900 Public Common MIB
–MIB II (RFC 1213)
•Manageabilityusing any generic SNMP management application that supports
the MIBs listed above.
•Upgradeable device firmware (in nonvolatile Flash memory) using Trivial File
TransferProtocol(TFTP)withDigital’sNetworkDeviceUpgrade(DECndu)Plus
utility or through the setup port with any TFTP server.
•User-friendly advanced Graphical User Interface (GUI) manageability with
Digital’s HUBwatch Network Management Station (NMS) application.