AT-3600 Series Installation Manual

AT-3600 Series Installation Manual
Electrical Safety and Installation
Requirements
RADIATED ENERGY
U.S. Federal Communications
Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of 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 this 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.
Note: Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate this
equipment.
Canadian Department of Communications
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
STANDARDS: This product meets the following standards
RFI EmissionEN55022 Class A
WARNING: In a domestic environment this product may cause radio interference in which case the user may be required to take
adequate measures.
Immunity EN50082-1
Electrical Safety EN60950, UL1950, CSA 950
SAFETY
LIGHTNING DANGER
DANGER: DO NOT WORK on equipment or CABLES during periods of LIGHTNING ACTIVITY.
This is a “CLASS 1 LED PRODUCT”
OPERATING TEMPERATURE: This product is designed for a maximum ambient temperature of 40 degrees C.
ENVIRONMENTAL AIR NOTICE
Caution: UL listed for use in other Environmental Air Spaces in Accordance with Article 300-22(C) of the U.S.A National Electrical
Code.
Note: Product is not Plenum rated
ALL COUNTRIES: Install product in accordance with local and National Electrical Codes.
NORMEN: Dieses Produkt erfüllt die Anforderungen der nachfolgenden Normen.
Hochfrequenzstörung EN55022 Klasse A
WARNUNG: Bei Verwendung zu Hause kann dieses Produkt Funkstörungen hervorrufen. In diesem Fall müßte der Anwender
angemessene Gegenmaßnahmen ergreifen.
Störsicherheit EN50082-1
Elektrische Sicherheit EN60950, UL1950, CSA 950
SICHERHEIT
GEFAHR DURCH BLITZSCHLAG
GEFAHR: Keine Arbeiten am Gerät oder an den Kabeln während eines Gewitters ausführen
Das ist ein “LED Produkt der Klasse 1”
BETRIEBSTEMPERATUR
Dieses Produkt wurde für den Betrieb in einer Umgebungstemperatur von nicht mehr als 40° C entworfen.
ALLE LÄNDER: Installation muß örtlichen und nationalen elektrischen Vorschriften entsprechen.
i
Radiofrekvens forstyrrelsesemission EN55022 Klasse A
ADVARSEL: I et hjemligt miljø kunne dette produkt forårsage radio forstyrrelse. Bliver det tilfældet, påkræves brugeren muligvis
at tage tilstrækkelige foranstaltninger.
Immunitet EN50082-1
Elektrisk sikkerhed. EN60950, UL1950, CSA 950.
SIKKERHED
FARE UNDER UVEJR
FARE: UNDLAD at arbejde på udstyr eller KABLER i perioder med LYNAKTIVITET.
Dette er et “PRODUKT UNDER KLASSE 1 LED”
BETJENINGSTEMPERATUR
Dette apparat er konstrueret til en omgivende temperatur på maksimum 40 grader C.
ALLE LANDE: Installation af produktet skal ske i overensstemmelse med lokal og national lovgivning for elektriske installationer.
RFI Emissie EN55022 Klasse A
WAARSCHUWING: Binnenshuis kan dit product radiostoring veroorzaken, in welk geval de gebruiker verplicht kan worden om
gepaste maatregelen te nemen.
Immuniteit EN50082-1
Electrische Veiligheid EN60950, UL1950, CSA 950
VEILIGHEID
GEVAAR VOOR BLIKSEMINSLAG
GEVAAR: NIET aan toestellen of KABELS WERKEN bij BLIKSEM.
Dit is een “KLASSE 1 LED-PRODUKT”
BEDRIJFSTEMPERATUUR
De omgevingstemperatuur voor dit produkt mag niet meer bedragen dan 40 graden Celsius.
ALLE LANDEN: het toestel installeren overeenkomstig de lokale en nationale elektrische voorschriften.
NORMES: ce produit est conforme aux normes de suivantes :
Emission d’interférences radioélectriques EN55022 Classe A
MISE EN GARDE : dans un environnement domestique, ce produit peut provoquer des interférences radioélectriques. Auquel cas,
l’utilisateur devra prendre les mesures adéquates.
Immunité EN50082 - 1
Sécurité électrique EN60950, UL1950, CSA 950
SÉCURITÉ
DANGER DE FOUDRE
DANGER: NE PAS MANIER le matériel ou les CÂBLES lors d’activité orageuse.
Ce matériel est un “PRODUIT À DIODE ÉLECTROLUMINESCENTE DE CLASSE 1”
TEMPÉRATURE DE FONCTIONNEMENT
Ce matériel est capable de tolérer une température ambiante maximum de 40 degrés Celsius.
POUR TOUS PAYS: Installer le matériel conformément aux normes électriques nationales et locales.
Radioaaltojen häirintä EN55022 Luokka A
VAROITUS: Kotiolosuhteissa tämä laite voi aiheuttaa radioaaltojen häiröitä, missä tapauksessa laitteen käyttäjän on mahdollisesti
ryhdyttävä tarpeellisiin toimenpiteisiin.
Kestävyys EN50082-1
ii
Sähköturvallisuus EN60950, UL1950, CSA 950
TURVALLISUUS
ALAMANISKUVAARA
HENGENVAARA: ÄLÄ TYÖSKENTELE laitteiden tai KAAPELEIDEN KANSSA SALAMOINNIN AIKANA.
Tämä on “ENSIMMÄISEN LUOKAN VALODIODITUOTE”
KÄYTTÖLÄMPÖTILA
Tämä tuote on suunniteltu ympäröivän ilman maksimilämpötilalle 40 °C.
KAIKKI MAAT: Asenna tuote paikallisten ja kansallisten sähköturvallisuusmääräysten mukaisesti.
Emissione RFI (interferenza di radiofrequenza) EN55022 Classe A
AVVERTENZA: in ambiente domestico questo prodotto potrebbe causare radio interferenza. In questo caso potrebbe richiedersi
all’utente di prendere gli adeguati provvedimenti.
Immunità EN50082-1
Sicurezza elettrica EN60950, UL1950, CSA 950
NORME DI SICUREZZA
PERICOLO DI FULMINI
PERICOLO: NON LAVORARE sul dispositivo o sui CAVI durante PRECIPITAZIONI TEMPORALESCHE.
Questo è un “PRODOTTO CON LED DI CLASSE 1”
TEMPERATURA DI FUNZIONAMENTO
Questo prodotto è concepito per una temperatura ambientale massima di 40 gradi centigradi.
TUTTI I PAESI: installare il prodotto in conformità delle vigenti normative elettriche nazionali.
RFI stråling EN55022 Klasse A
ADVARSEL: Hvis dette produktet benyttes til privat bruk, kan produktet forårsake radioforstyrrelse. Hvis dette skjer, må brukeren
ta de nødvendige forholdsregler.
Immunitet EN50082-1
Elektrisk sikkerhet EN60950, UL1950, CSA 950
SIKKERHET
FARE FOR LYNNEDSLAG
FARE: ARBEID IKKE på utstyr eller KABLER i TORDENVÆR.
Dette er et “KLASSE 1 LED PRODUKT”
DRIFTSTEMPERATUR
Dette produktet er konstruert for bruk i maksimum romtemperatur på 40 grader celsius.
ALLE LAND: Produktet må installeres i samsvar med de lokale og nasjonale elektriske koder.
Emissão de interferência de radiofrequência EN55022 Classe A
AVISO: Num ambiente doméstico este produto pode causar interferência na radiorrecepção e, neste caso, pode ser necessário que o
utente tome as medidas adequadas.
Imunidade EN50082-1
Segurança Eléctrica EN60950, UL1950, CSA 950
SEGURANÇA
PERIGO DE CHOQUE CAUSADO POR RAIO
PERIGO: NÃO TRABALHE no equipamento ou nos CABOS durante períodos suscetíveis a QUEDAS DE RAIO.
Este é um “PRODUTO CLASSE 1 LED”
iii
TEMPERATURA DE FUNCIONAMENTO
Este produto foi projetado para uma temperatura ambiente máxima de 40 graus centígrados.
TODOS OS PAÍSES: Instale o produto de acordo com as normas nacionais e locais para instalações elétricas.
Emisión RFI EN55022 Clase A
ADVERTENCIA: en un entorno doméstico, este producto puede causar radiointerferencias, en cuyo caso, puede requerirse del
usuario que tome las medidas que sean convenientes al respecto.
Inmunidad EN50082-1
Seguridad eléctrica EN60950, UL1950, CSA 950
SEGURIDAD
PELIGRO DE RAYOS
PELIGRO: NO REALICE NINGUN TIPO DE TRABAJO O CONEXION en los equipos o en LOS CABLES durante TORMENTAS
ELECTRICAS.
Este es un “PRODUCTO DE DIODO LUMINISCENTE (LED) CLASE 1”
TEMPERATURA REQUERIDA PARA LA OPERACIÓN
Este producto está diseñado para una temperatura ambiental máxima de 40 grados C.
PARA TODOS LOS PAÍSES: Monte el producto de acuerdo con los Códigos Eléctricos locales y nacionales.
Radiostörning EN55022 Klass A
VARNING: Denna produkt kan ge upphov till radiostörningar i hemmet, vilket kan tvinga användaren till att vidtaga erforderliga
åtgärder.
Immunitet EN50082-1
Elsäkerhet EN60950, UL1950, CSA 950
SÄKERHET
FARA FÖR BLIXTNEDSLAG
FARA: ARBETA EJ på utrustningen eller kablarna vid ÅSKVÄDER.
Detta är en “KLASS 1 LYSDIODPRODUKT”
DRIFTSTEMPERATUR
Denna produkt är konstruerad för rumstemperatur ej överstigande 40 grader Celsius.
ALLA LÄNDER: Installera produkten i enlighet med lokala och statliga bestämmelser för elektrisk utrustning.
iv
CentreCOM
3600 Series
Manageable
Hub/Repeaters
AT-3606F & AT-3606F/SMA
AT-3606F/ST, SC & SM
AT-3608
AT-3612T
AT-3612TR
AT-3624T
AT-3624TR
Installation Manual
 Copyright 1996 Allied Telesyn International
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied
Telesyn International.
Allied Telesyn International reserves the right to make changes in specifications and other information contained in
this document without prior written notice. The information provided herein is subject to change without notice. In no
event shall Allied Telesyn International be liable for any incidental, special, indirect, or consequential damages
whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information
contained herein, even if Allied Telesyn International has been advised of, known, or should have known, the
possibility of such damages.
Ethernet is a registered trademark of Xerox Corporation. UNIX is a registered trademark of UNIX System
Laboratories. Novell and NetWare are registered trademarks of Novell, Inc. Microsoft and MS-DOS are registered
trademarks and LAN Manager and Windows for Workgroups are trademarks of Microsoft Corporation. 3Com is a
registered trademark of 3Com. PC-NFS is a trademark of Sun Microsystems, Inc. PC/TCP is a registered trademark
of FTP Software, Inc. DECnet is a registered trademark of Digital Equipment Corporation.
Table of Contents
Electrical Safety and Installation Requirements
.......................................i
Chapter 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CentreCOM AT-3600 Series Hubs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Configuration Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chassis Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network Management Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAC Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Central-Site Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Upgrading Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Further Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
1
2
3
3
3
5
5
6
6
6
Chapter 2
Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installing Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
AT-3600 Port Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
RS232 Terminal Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Appliqué Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Appliqué Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
External Transceivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Back Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Hub Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Troubleshooting the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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Table of Contents
Chapter 3
AT-3606F and AT-3606F/SMA Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
AT-3606F and AT-3606F/SMA Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fiber Optic (10BASE-FL) Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Fiber Optic Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Chapter 4
AT-3606F/SM, SC, ST Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Fiber Optic Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Fiber Optic (FOIRL, 10BASE-FL) Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Fiber Optic Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Chapter 5
AT-3608 Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
AT-3608 Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Cascade Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
10BASE2 Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Port Status Indicators and Terminator Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Terminator Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Chapter 6
AT-3612T Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
AT-3612T Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Hub Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Port Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Chapter 7
AT-3612TR Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
AT-3612TR Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
RJ45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Chapter 8
AT-3624T Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
AT-3624T Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Chapter 9
AT-3624TR Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
AT-3624TR Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
RJ45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
MDI/MDI-X Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
viii
CentreCOM 3600 Series Hub/Repeaters
Appendix A
UTP Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UTP Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UTP Hub-to-MAU Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UTP MAU-to-MAU, Hub-to-Hub Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47
47
48
49
Appendix B
Telco Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-Pin Telco Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-Pin Telco-to-RJ45 Octopus Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50-Pin Telco-to-RJ45 Harmonica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
51
51
51
54
54
54
Appendix C
IEEE 802.3 Quick Primer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10BASE-T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Four-Repeater Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10BASE-FL/FOIRL Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10BASE2 (Thin) Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10BASE5 (Thick) Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AUI Drop Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Propagation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
55
55
55
56
56
56
56
57
Appendix D
Glossary
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Appendix E
Technical Support Fax Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Incident Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Appendix F
CentreCOM AT-3600 Manual Feedback
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Appendix G
Where To Find Us
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Appendix H
Index
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
ix
Table of Contents
List of Figures
Figure 1: AT-3612TR Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Figure 2: Populated 8-Slot Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 3: MAC Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Figure 4: Removing the Interrepeater Bus Dust Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Figure 5: Removing Rubber Feet from Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Figure 6: Attaching Chassis Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Figure 7: AT-3600 RS232 DB9 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Figure 8: Network Appliqués . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Figure 9: AT-3612TR Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Figure 10: AUI Appliqué Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Figure 11: Slide-kit Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 12: AUI Appliqué Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Figure 13: Appliqué Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Figure 14: AUI Connector Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Figure 15: Module Faceplate Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Figure 16: AT-3606F Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Figure 17: Hub Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Figure 18: AT-3606F Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Figure 19: ST Connectors for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Figure 20: SMA Connectors for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Figure 21: AT-3606F Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Figure 22: AT-3606F/SM Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Figure 23: AT-3606F/SC Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Figure 24: AT-3606F/ST Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Figure 25: ST Connectors for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Figure 26: SC Connector for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Figure 27: SMA Connectors for Fiber Optic Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Figure 28: AT-3606F/SC Port Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Figure 29: AT-3608 Front and Back Panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 30: Normal/Cascade Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Figure 31: AT-3608 Cascade Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Figure 32: BNC-T at End of 10BASE2 Segment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Figure 33: BNC Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Figure 34: BNC Port Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Figure 35: AT-3612T Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Figure 36: AT-3612T Hub Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Figure 37: AT-3612T Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Figure 38: AT-3612TR Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Figure 39: RJ45 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Figure 40: AT-3612TR Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Figure 41: AT-3624T Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Figure 42: AT-3624T Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Figure 43: AT-3624TR Front and Back Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Figure 44: RJ45 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Figure 45: MDI/MDI-X Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Figure 46: AT-3624TR Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Figure 47: RJ45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Figure 48: Hub-to-MAU Wiring (A) Usable and (B) Unusable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Figure 49: Hub-to-Hub or MAU-to-MAU Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Figure 50: 50-Pin Telco Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Figure 51: AT-ADAPT-2 Telco-to-RJ45 Harmonica Adapter for AT-3612T . . . . . . . . . . . . . . . . . . . . . . . . 54
x
CentreCOM 3600 Series Hub/Repeaters
List of Tables
Table 1: Manageable AT-3600 Series Hub Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 2: ATl Network Port Appliqués . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 3: ATI Micro Transceivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 4: AT-3606F Series Hubs with Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 5: Usable and Unusable Twisted Pair Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Table 6: 50-Pin Telco Pin-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
xi
Chapter 1
Overview
This manual describes the hardware features and installation procedures
for Allied Telesyn International (ATI)’s set of independently manageable
hub models in the AT-3600 Series.
The AT-3600 Series also includes “Slave” modules that are not
manageable as standalone devices (the AT-3624TS and AT-3624TRS
models). These devices have their own manual and are not described here.
For information on the software installation and network management
aspects of AT-3600 Series hubs, see the separate CentreCOM 3600 Series
and AT-S4 Firmware Module Network Operations Manual shipped with
each manageable hub.
CentreCOM AT-3600 Series Hubs
CentreCOM AT-3600 Series multiple-port hubs offer maximum flexibility
and redundancy for both workgroup and department needs. They are
IEEE 802.3 compliant/Ethernet compatible and support Simple Network
Management Protocol (SNMP) with both the second version of the
Management Information Base (MIB-II) and hub MIB (also known as Hub
MIB).
Note
This manual refers to two or more chassis-mounted hubs, at least one of
which is manageable, as a department concentrator. The term hub refers to
either a standalone hub (i.e., a single manageable hub) or a department
concentrator configuration.
Each manageable AT-3600 Series hub is a single building block for both
standalone (hub) and chassis (department concentrator) configurations.
ATI supplies desktop and rackmount department concentrator chassis
that can hold up to eight AT-3600 Series hubs. Since the department
concentrator chassis connects hub modules across a backplane, a fully
populated department concentrator behaves as a single hub in the
network topology. This enables you to build and reconfigure networks
easily, efficiently, and at minimum expense.
1
Overview
Features
AT-3600 Series hubs are based on an Application-Specific Integrated
Circuit (ASIC) ATI developed for maximum functionality and reliability.
Figure 1 shows a sample AT-3600 Series hub faceplate, in this case a
Model AT-3612TR.
Data
ports
Port
activity
LEDs
RS232 port
Appliqué
port
Hub
status
LEDs
Front
Back
Firmware
cassette port
Figure 1: AT-3612TR Front and
Back Panels
Interrepeater
bus port
Each manageable AT-3600 Series hub is self-contained and provides the
following standard features regardless of the media type or number of
ports:
❑
❑
❑
❑
❑
❑
❑
❑
2
Internal universal power supply
IEEE 802.3 compliance; Ethernet Version 1.0 and 2.0 compatible
hub functionality
An Appliqué port supports optional transceiver modules for
backbone or interrepeater connectivity:
— Unshielded Twisted Pair (UTP) (10BASE-T)
— Thinnet (10BASE2)
— Attachment Unit Interface (AUI) (10BASE5)
— Fiber Optic (10BASE-FL)
Placement options include a standalone 19-inch rack or chassis
mount
Three types of network management capability:
— SNMP
— Via ASYNC ASCII terminal port (Omega)
— Telnet (Omega)
Software upgrade through firmware cassette or in-band
downloading
Hot swapping of modules in chassis
Comprehensive diagnostic LED support
CentreCOM 3600 Series Hub/Repeaters
Connectivity
Table 1 shows the various models of manageable AT-3600 Series hubs. You
can mix any combination of model types in a department concentrator
chassis for maximum flexibility. Subsequent chapters of this manual
describe the individual model types in detail, including faceplate design,
connection type and LED displays.
Table 1: Manageable AT-3600 Series Hub Models
Model Number
Port Count
Media/Connector Type
AT-3606F or
AT-3606F/ST
6
Fiber Optic (10BASE-FL)
with Straight Tip (ST) Connectors
AT-3606F/SMA or
AT-3606F/SM
6
Fiber Optic (10BASE-FL)
with Sub Miniature Assembly (SMA) Connectors
AT-3606F/SC
6
Fiber Optic (10BASE-FL)
with Subscriber Channel(SC) Connectors
AT-3608
8
Thinnet (10BASE2)
with Bayonet Nut Couple (BNC) Connectors
AT-3612T
12
UTP (10BASE-T)
with Telco 50-pin (RJ21) Connector
AT-3612TR
12
UTP (10BASE-T)
with RJ45 Connectors
AT-3624T
24
UTP (10BASE-T)
with 2 Telco 50-pin (RJ21) Connectors
AT-3624TR
24
UTP (10BASE-T)
with RJ45 Connectors
Note
References in this manual to SMA and SM are interchangeable, both being
acronyms for Sub Miniature Assembly.
Wiring Configuration
Rules
Depending on the medium you choose, there are certain wiring practices
you should follow to ensure the reliability of communication throughout
the network. The AT-3600 Series complies with IEEE standards for 802.3
Carrier Sense Multiple Access with Collision Detection (CSMA/CD)
Ethernet. You should refer to these standards when implementing your
network. Some important guidelines for ensuring integrity in network
wiring appear in later chapters of this manual, as appropriate for the
medium type.
Chassis Configuration
You can use a single manageable AT-3600 Series hub in standalone mode
or as part of a department concentrator housed in a chassis. Various
chassis models are available for desktop or rackmount configurations.
These include 1-, 2-, 3-, 4-, 7-, and 8-module combinations for desktop or
19-inch rackmount installations with either standard or segmented
backplanes. Call your ATI sales representative for details.
3
Overview
You can configure up to eight AT-3600 Series hubs in a rackmount chassis.
When fully populated with AT-3624T and AT-3624TR hubs, the chassis
creates a single department concentrator with up to 200 ports (8 modules
with 24 network ports each, plus 8 AUI ports).
Figure 2 shows a sample department concentrator using an 8-slot chassis.
Department Concentrator Chassis
FOIRL NETWORK PORTS 1-6
RS-232
TERMINAL PORT
1
2
3
4
5
6
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
POWER
STATUS
CentreCOM 3606F
TM
FAULT
AUI
IEEE 802.3/ETHERNET FOIRL
MULTIPORT HUB / REPEATER
with Network Management
MASTER
TX
RX
TX
RX
RECEIVE
TX
RECEIVE
RX
TX
RECEIVE
RX
TX
RX
RECEIVE
TX
RECEIVE
APPLIQUÉ PORT
FOIRL NETWORK PORTS 1-6
1
2
ON LINE
3
ON LINE
RS-232
TERMINAL PORT
4
ON LINE
5
ON LINE
POWER
STATUS
6
ON LINE
CentreCOM 3606F
TM
ON LINE
FAULT
AUI
IEEE 802.3/ETHERNET FOIRL
MULTIPORT HUB / REPEATER
with Network Management
MASTER
TX
RX
TX
RX
RECEIVE
TX
RECEIVE
RX
TX
RECEIVE
RX
TX
RX
RECEIVE
TX
RECEIVE
APPLIQUÉ PORT
2
ON LINE
3
ON LINE
ON
4
RS-232
TERMINAL PORT
5
ON LINE
ON
ON LINE
ON
6
7
ON LINE
ON
ON LINE
ON
POWER
STATUS
8
ON LINE
ON
ON LINE
ON
CentreCOM 3608
TM
ON
FAULT
AUI
IEEE 802.3/ETHERNET 10BASE2
MULTIPORT HUB / REPEATER
with Network Management
MASTER
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
POWER
RECEIVE
APPLIQUÉ PORT
FOIRL NETWORK PORTS 1-8
1
2
ON LINE
3
ON LINE
4
RS-232
TERMINAL PORT
5
ON LINE
ON LINE
6
7
ON LINE
ON LINE
POWER
STATUS
8
ON LINE
ON LINE
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
CentreCOM 3608
TM
FAULT
AUI
IEEE 802.3/ETHERNET 10BASE2
MULTIPORT HUB / REPEATER
with Network Management
MASTER
TERMINATOR
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
POWER
RECEIVE
APPLIQUÉ PORT
PORT ACTIVITY
10 BASE T NETWORK PORTS 1-12
PORT STATUS
No Link
Link
Receiving
STATUS
P
O
W
E
R
COLLISION
MASTER
2
4
INDICATOR STATUS
Indicator OFF
Indicator ON
Indicator FLASHING
6
8
RS-232
TERMINAL PORT
LINK
10
TM
POWER
1
3
5
7
9
11
APPLIQUÉ PORT
PORT ACTIVITY
PORT STATUS
No Link
Link
Receiving
P
O
W
E
R
COLLISION
MASTER
2
4
INDICATOR STATUS
Indicator OFF
Indicator ON
Indicator FLASHING
6
8
RS-232
TERMINAL PORT
LINK
10
5
6
7
TM
IEEE 802.3/ETHERNET 10BASE2
MULTIPORT HUB / REPEATER
with Network Management
MASTER
POWER
3
5
7
9
11
APPLIQUÉ PORT
PORT ACTIVITY
8
CentreCOM 3612T
FAULT
FOIRL
1
ACTIVITY
4
Slaves
POWER
STATUS
12
FAULT
10 BASE T NETWORK PORTS
3
IEEE 802.3/ETHERNET 10BASE2
MULTIPORT HUB / REPEATER
with Network Management
MASTER
STATUS
2
CentreCOM 3612T
FAULT
FOIRL
10 BASE T NETWORK PORTS 1-12
1
POWER
STATUS
12
FAULT
ACTIVITY
Backup
POWER
RX
RECEIVE
FOIRL NETWORK PORTS 1-8
1
Master
POWER
RX
RECEIVE
9
10
11
12
1
PORT STATUS
INDICATOR STATUS
No Link
Link
Receiving
Indicator OFF
Indicator ON
Indicator FLASHING
2 3 4
5
6 7
RS-232
TERMINAL PORT
8
LINK
POWER
STATUS
CentreCOM 3612TR
TM
2
4
6
8
10
12
1
3
5
7
9
11
FAULT
10 BASE-T
IEEE 802.3/ETHERNET 10BASE2
MULTIPORT HUB / REPEATER
with Network Management
MASTER
POWER
TM
Figure 2: Populated 8-Slot
Chassis
X
X
X
X
X
X
X
X
X
X
X
APPLIQUÉ PORT
10 BASE-T NETWORK PORTS
PORT ACTIVITY
IEEE 802.3/ETHERNET 10 BASE-T
24 PORT HUB / REPEATER
CentreCOM 3624TRS
X
1
2
PORT STATUS
3
4
INDICATOR STATUS
5
NO LINK
6
7
INDICATOR OFF
8
LINK
9
10
INDICATOR ON GREEN
11
12
RECEIVING
13
STATUS
INDICATOR FLASHING GREEN
14
15
16
PARTITIONED
17
18
INDICATOR ON AMBER
19
COLLISION
20
21
POWER
INDICATOR FLASHING AMBER
22
23
24
FAULT
ACTIVITY
POWER
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
You can mount any combination of the following hub models in the same
department concentrator chassis: AT-3606F; AT-3606F/SMA; AT-3606F/
ST, SC, SM; AT-3608; AT-3612T; AT-3612TR; AT-3624T; AT-3624TR;
AT-3624TS; and AT-3624TRS.
Network management software will view the concentrator as a single
logical device. In this configuration the modules perform different
functions:
❑
❑
❑
The top module becomes the Master. It downloads software to, and
serves as, the reporting unit for other units in the concentrator. It
also controls management functions.
The module in the slot directly below the Master becomes the
Backup. It assumes management functions if the Master fails.
All other modules function as Slaves. They report management
information to the Master but do not perform any control functions.
Each chassis must contain at least one manageable hub module to enable
network management. This module must occupy the uppermost slot in the
chassis. Because the uppermost manageable hub performs all
management reporting activities, it is referred to as the Master. The other
AT-3600 modules in the same chassis (except any Backup module that
may be installed) are called Slaves.
4
CentreCOM 3600 Series Hub/Repeaters
Chassis slots are numbered from 1 (top) through 8 (bottom). The Master is
defined as the module in the lowest-numbered (physically topmost)
occupied slot position. Typically this is slot 1, but it could be slot 2 if slot 1
is vacant.
A second manageable AT-3600 module may be installed in the slot directly
below the Master to serve as a Backup management unit. This special
module always occupies the next higher-numbered slot position below the
Master so it can immediately take over the Master’s functions if necessary.
Slave modules (AT-3624TS and AT-3624TRS) may occupy any other
higher-numbered slot position in the chassis—they do not need to be
adjacent or contiguous. (In other words, Slave units may be separated by
empty chassis slots.)
Network Management Planning
Before installing and connecting manageable AT-3600 Series hubs at
various site locations (such as in closets in a single building or in closets
on different floors or in different buildings), you need to decide on the
number of hubs in your network and where each hub is to be located. This
advanced planning will facilitate the assignment of hub names, MAC and/
or IP addresses. It will also maximize the efficiency of network
management once your hubs are fully installed and operational.
MAC Address
All “intelligent” ATI hubs (those with management capabilities) require a
unique 6-byte (12-digit) Media Access Control (MAC) address which
includes a 3-byte (6-digit) company identification number.
The MAC address is a unique number assigned to the nodes using the
network. The MAC address is used to resolve conflict when multiple
computers are trying to access the network simultaneously. This IEEE
physical storage location address resides in the MAC PROM and is
accessed through an ASCII terminal.
In order to make this address easily accessible and externally visible, a
MAC address label will be affixed on all products within the proximate
location of the RS232, BNC or AUI port.
The example shown in Figure 3 is a MAC address label placed above a
RS232 port on an AT-3612T hub.
5
Overview
PORT ACTIVITY
10 BASE-T PORTS 1 - 12
PORT STATUS
No Link
Link
Receiving
STATUS
COLLISION
MASTER
P
O
W
E
R
OFF
Green ON
Green FLASHING
RS-232
TERMINAL PORT
INDICATOR STATUS
Partitioned
Collision
Amber ON
Amber FLASHING
1
3
5
7
9
11
2
4
6
8
10
12
MAC ADDRESS
0000F4XXXXXX
AUI
POWER
CentreCOM 3612T
IEEE 802.3/ETHERNET 10 BASE-T
12 PORT HUB / REPEATER
with Network Management
FAULT
ACTIVITY
APPLIQUÉ PORT
RS-232
TERMINAL PORT
MAC ADDRESS
0000F4XXXXXX
Figure 3: MAC Address
Central-Site
Connection
To enable central-site connection and network management, every hub in
a TCP network must have an installed TCP/IP address. You can install a
TCP/IP address either by connecting to the serial port of a hub and
bringing up the Omega local management program or by using a Bootp
server.
The “Network parameters” option (n) in the Omega Administration menu
allows you to configure IP and SNMP information for the hubs in a TCP/IP
network. This menu leads you through a series of configuration screens
detailed in the CentreCOM 3600 Series and AT-S4 Firmware Module
Network Operations Manual.
Upgrading
Software
The AT-3600 agent software is easy to upgrade through the firmware
cassette port. As illustrated in Figure 1, this port is located on the back
panel of every AT-3600 Series module with management capability. When
you insert an optional AT-S4 firmware cassette into this port, the new
firmware is copied to the hub’s onboard non-volatile flash memory at
power-up.
Once you have upgraded one hub through the firmware cassette, you can
use Omega’s built-in downloading capability to upgrade any AT-3600
Series hub over the network from any other AT-3600 unit. In addition, the
on-line Bulletin Board System (BBS) maintained by ATI Technical
Support offers software updates for download via the SNMP utilities
Trivial File Transfer Protocol (TFTP) and Boot Protocol (BootP).
Further Information
For more detailed information about AT-S4 capabilities and installation,
refer to the CentreCOM 3600 Series and AT-S4 Firmware Module Network
Operations Manual.
6
Chapter 2
Hardware Installation
Site Preparation
Attention
Before installing AT-3600 Series hubs, read the safety installation
requirements starting on page i.
Location
A manageable AT-3600 Series hub can operate as a standalone product,
installed in a chassis, in a 19-inch rack, or on a desk top. You can combine
multiple hubs in an ATI chassis.
Ventilation
The site must have adequate ventilation to provide an operating
environment consistent with AT-3600 Series specifications. Chassis
mounting requires 191 mm (7.5 in.) ventilation clearance on all sides.
AT-3600 Series hubs have internal fans to aid in cooling. For the fans to
function correctly, you must not block the ventilation openings located on
the sides of the chassis.
Attention
Maximum ambient temperature is 40o C with a department concentrator
chassis.
Power
Power connections for each unit should be able to provide 50 watts at
120 VAC for U.S.A. versions. It is customary to use dedicated power
circuits or power conditioners to supply power to the network devices. This
helps isolate the network equipment from electrical power “noise.”
Installing Hubs
This section contains two separate procedures for installing manageable
AT-3600 Series hubs:
❑
❑
Standalone installation
Installation in a managed hub configuration in a concentrator
chassis
7
Hardware Installation
Installing a standalone hub
Use the following procedure to install an AT-3600 Series hub in a
standalone configuration:
1. Plug one end of the power cord into the hub’s power receptacle and the
other end into a power outlet.
2. Check to see that the Power and Master indicators illuminate.
3. Plug your data cables into the hub and the network device.
The Link indicator for each connected port will illuminate (except
on the AT-3606F, AT-3606F/SMA, and AT-3608).
If one or more of the ports are transferring data, the Receive
indicator will also illuminate.
The hub is now ready to be managed.
Installing a module in a four- or eight-slot managed hub
configuration
Attention
Improper installation of the chassis can expose personnel to high voltages,
risking the possibility of injury or death.
Attention
Improper installation may expose the hubs to debris and block vents,
causing damage because of insufficient cooling.
Attention
When installing multiple ATI hubs in a chassis with power, setting the
chassis voltage switch too high (at 240V when 120V is required) will cause
overheating of the fans. Setting the voltage too low (at 120V when 240V is
required) will reduce the effectiveness of the fans and thus cause
overheating of the installed hub modules. Check the specific chassis model
to determine the correct voltage setting.
1. Check to be sure another module is already functioning as the Master
unit in the chassis.
8
CentreCOM 3600 Series Hub/Repeaters
2. Remove the interrepeater bus dust cover from the back of any newly
shipped AT-3600 module before installing it in a multi-module chassis.
The interrepeater bus port is located on the back panel of every
AT-3600 module. See Figure 4.
S
STATU
LT
FAU
BUS
ATER
REPE
INTER
R
MASTE
ER
POW
ET TE
CASS
ARE
FIRMW
Cover
DustDust
Cover
AT-36xx
with
dust
installed
AT-36xx
with
dustcover
cover installed
Interrepeater
Interrepeater
Bus
Port Connector
Bus Port
S
STATU
BUS
ATER
REPE
INTER
Connector
Figure 4: Removing the
Interrepeater Bus
Dust Cover
LT
FAU
R
MASTE
ER
POW
ET TE
CASS
ARE
FIRMW
AT-36xx
withwith
dust
cover
AT-36xx
dust
coverremoved
removed
SE 2
T 10 BA
ERNE
/ ETH PEATER
802.3
IEEE HUB / REnagement
RT
Ma
8 PO work
Net
with
3. Remove the rubber feet from the bottom of any newly shipped AT-3600
Series module before installing it in a multi-module chassis. See
Figure 5.
AUI
Rubber foot
(1 of 4)
Reinstall
all 4 screws
Figure 5: Removing Rubber
Feet from Module
4. Reinstall the screws, after removing the rubber feet, to prevent the
module casing from expanding and warping.
5. Attach the chassis guide/handle assembly to each side of the module,
using the screws provided with the chassis. See Figure 6.
PORT ACTIVITY
10 BASE T NETWORK PORTS
PORT STATUS
1
2
3
4
5
6
7
8
9
10
11
12
X
X
X
X
X
X
X
X
X
X
X
X
No Link
Link
Receiving
1
2 3 4
5
6 7
8
INDICATOR STATUS
Indicator OFF
Indicator ON
Indicator FLASHING
LINK
RS-232
TERMINAL PORT
STATUS
POWER
CentreCOM 3612TR
TM
2
4
6
8
10
12
1
3
5
7
9
11
10 BASE-T
AUI
FAULT
MASTER
IEEE 802.3/ETHERNET 10BASE2
MULTIPORT HUB / REPEATER
with Network Management
POWER
Chassis
guide handle
APPLIQUÉ PORT
Front
of
module
Figure 6: Attaching Chassis
Guides
9
Hardware Installation
Note
Figure 6 shows a sample guide assembly only; some chassis models use a
different type of guide assembly.
6. Make sure the chassis guide handles are aligned with the front (i.e.,
connector side) of the module, as shown in Figure 6.
7. If necessary, remove the blank faceplate/air-dam assembly from the
slot in which you will be installing the module.
8. Align the guide rails on either side of the module with the grooves in
the chassis slot.
9. Slide the module along the chassis guide in the chassis, but do not seat
it in the chassis backplane connector.
10. Plug in the newly installed module’s power cord.
11. Check to see that the Power and Master indicators illuminate before
seating the module in the chassis backplane.
12. Seat the module carefully and firmly in the chassis backplane.
The indicator on the Master unit should not illuminate when a module
is installed in a chassis as a Back-up or Slave unit. (See Figure 2 in
Chapter 1 of this manual.)
Note
When using the hot swapping method to insert or remove hub modules, you
must be sure that the power cord on each unit is plugged in. To enable hot
swapping, you must disconnect the module from the backplane before you
unplug the power cord.
13. Attach the module to the chassis, using the screws provided with the
chassis.
14. Connect your data cables to the hub and the network.
15. Check the Link indicators.
If one or more of the ports on the module are transferring data, the
Receive indicator will illuminate.
The AT-3600 Series module is now active in the chassis as a component of
a network concentrator.
For confirmation, you can obtain hub and port status information via
network management. To enable management from a PC monitor, the PC
must be connected to the Master unit through the Master’s RS232 port
(illustrated in Figure 7).
Note
You should always quit the Omega management program at the end of
each session, before reconfiguring the hubs in a chassis. Otherwise, you
might encounter such problems as not being able to exchange management
hubs in a chassis.
Note
If you need to reinstall or update the network management software in a
hub module, refer to the CentreCOM 3600 Series and AT-S4 Firmware
Module Network Operations Guide.
10
CentreCOM 3600 Series Hub/Repeaters
Attention
Upon initial power-up, the LEDs (including the red Fault lights) on all
units connected through a chassis backplane will activate. This is a normal
cycling function and is not any indication of a problem.
AT-3600 Port Configurations
RS232 Terminal Port
All AT-3600 Series manageable hubs include an RS232 Terminal Port on
the front panel. Figure 7 shows the RS232 Terminal Port whose principal
use is the connection of a local network management terminal to access
Omega.
Figure 7: AT-3600 RS232 DB9
Connector
9
2
3
4
5
8
7
1
6
This port conforms to the signaling characteristics of EIA standard RS232
and implements the signals necessary to support an asynchronous device.
The physical connector is not, however, an RS232 DB25, but is instead a
DB9 commonly used on PCs.
Note
For more information, including pin-out assignments for enabling an
AT-3600 module as Data Communication Equipment (DCE) or as Data
Terminal Equipment (DTE), refer to the CentreCOM 3600 Series and AT-S4
Firmware Module Network Operations Manual.
Appliqué Ports
AT-3600 Series hub models feature a variety of port counts and support a
variety of media, including:
❑
❑
❑
❑
Fiber optic(10BASE-FL), using ST, SC, or SMA connectors
Thinnet (10BASE2), using BNC connectors
UTP/STP (10BASE-T), using Telco RJ21 or RJ45 connectors
Thick Ethernet (10BASE5), using the AUI connector
AT-3600 Series hubs with management capability have a convertible
network (appliqué port located on the front panel. In a department
concentrator configuration, you might typically use one hub module’s
appliqué port for the network connection and the other modules’ appliqué
ports for station connections.
The network appliqué port is convertible on all AT-3600 Series hubs with
management capability. You may configure it by replacing the networkinterface appliqué (or (internal transceiver) as described below, or you
might have purchased it preconfigured at the factory.
11
Hardware Installation
In addition to the AUI interface, optional appliqués are available for
connection with fiber optic (ST, SC, or SM), thinnet (BNC) or UTP (RJ45)
cabling. Figure 8 shows the available (appliqué faceplates.
AT-A1 (SMA)
AT-A2 (SC)
AT-A3 (ST)
AT-A5 (AUI)
AT-A8 (BNC)
AT-A9 (10BASE-T)
Figure 8: Network Appliqués
Note
During the swap-out of an appliqué, it is advisable to turn off the power since
you will be removing screws and inserting metal parts into the appliqué opening.
You can combine any hub model with any of the six network port
appliqués shown in Table 2.
Table 2: ATl Network Port Appliqués
12
Suffix
Network Interconnect Appliqué
-x1
SM/SMA Fiber Optic Port
-x2
SC Fiber Optic Port
-x3
ST Fiber Optic Port
-x5
AUI Port
-x8
BNC Port
-x9
RJ45 Port
CentreCOM 3600 Series Hub/Repeaters
The x in the “suffix” column above indicates the power type, where:
❑
❑
“1” is a universal power supply with a U.S.A.-style power cord.
“2” is a universal power supply without power cord (export model).
For example:
❑
❑
Appliqué
Installation
Procedures
If you were to order an AT-3606F-18 (i.e. x = 1) hub with 6 fiber
optic station ports, it would be provided with a U.S.A.-style power
cord and a BNC (10BASE2) network interconnect port.
If you were to order an AT-3606F-28 (i.e. x = 2) hub with 6 fiber
optic station ports, however, it would be provided with a BNC
(10BASE2) network interconnect port but without a power cord.
Appliqués attach to any AT-3600 Series hub with management capability
through the front panel appliqué port. This port is located to the left of the
power receptacle and the RS232 terminal port, as shown in Figure 9.
RS232
port
Power
receptacle
Appliqué
port
Front
Figure 9: AT-3612TR Front and
Back Panels
Back
To remove an AUI appliqué
1. Detach the AUI appliqué assembly installed on the front panel
appliqué port. Loosen the two M3x6 flat-head screws to the far right
and left on the connector plate, shown in Figure 10.
M3x6 flat-head screws
Connector
plate
Figure 10: AUI Appliqué
Assembly
AUI connector
13
Hardware Installation
Note
Do not unscrew the AUI slide-kit screws shown in Figure 11 until the entire
appliqué assembly (i.e., AUI connector, connector plate, and attached
ribbon cable) pops out. The washers and nuts on the back of the slide-kit
may fall inside the hub module and will be difficult to retrieve.
AUI connector
Appliqué
connector
plate
Slide-kit screws
Figure 11: Slide-kit Screws
2. Carefully pull the AUI appliqué assembly from the hub faceplate to
expose the ribbon cable (shown in Figure 13).
3. Detach the AUI connector from the appliqué connector plate by
removing the slide-kit screws, washers, and nuts.
4. Separate the AUI appliqué connector plate from the ribbon cable by
rotating the cable 90° and sliding it through the slot in the connector
plate shown in Figure 12.
Slot enabling
pass-through
of ribbon
cable
Connector
plate screw holes
Figure 12: AUI Appliqué
Connector Plate
5. Store the detached AUI appliqué plate, slide-kit screws, washers, and
nuts in a secure container for future use.
14
CentreCOM 3600 Series Hub/Repeaters
To install a 10BASE2, 10BASE-T or fiber Optic (10BASE-FL)
appliqué
1. Remove the AUI appliqué (as described above).
2. Plug the replacement 10BASE2, 10BASE-T, or 10BASE-FL appliqué
into the AUI connector, as shown in Figure 13.
Replacement
appliqué
AUI
connector
Open
appliqué
port
Ribbon
cable
Figure 13: Appliqué
Installation
3. Secure the interface between the replacement appliqué and the AUI
connector by using 4-40 pan-head screws as shown in Figure 14. Note
that these screws connect the AUI connector to the rear section of the
replacement appliqué, which is not shown in Figure 14.
Replacement
appliqué
4-40 pan-head
screw holes
AUI connector
Figure 14: AUI Connector
Interface
15
Hardware Installation
4. Slide the replacement appliqué into the port cavity so its faceplate is
flush with the surface of the hub faceplate. Then, screw it down with
the two thumb screws provided with the replacement appliqué, as
shown in Figures 15. Do not overtighten.
Thumb
screws
Front
Figure 15: Module Faceplate
Interface
Appliqué
Back
To remove a 10BASE2, 10BASE-T or fiber Optic (10BASE-FL)
appliqué
1. Loosen the two thumb screws (shown in Figure 15) and pull out the
existing appliqué.
2. Remove the 4-40 pan-head screws from the AUI connector and ribbon
cable assembly (reverse of Step 3 and related Figure 14 above).
3. Store the removed 10BASE2, 10BASE-T, or 10BASE-FL appliqué
assembly in a secure container for future use.
To install an AUI appliqué
1. Using the supplied screws, washers, and nuts, attach the AUI appliqué
connector plate and locking bracket (slide-kit) to the AUI connector.
(Reverse order of Steps 1 through 5 and associated Figure 10 through
Figure 12 above.)
2. Using the two M3x6 flat-head appliqué screws, attach the AUI
appliqué to the hub faceplate.
Attention
Loose metal parts can cause damage to exposed circuit boards and
components. Handle parts and any required tools with care during
installation.
16
CentreCOM 3600 Series Hub/Repeaters
External Transceivers
Another option is to configure the AT-3600 AUI network port for other
media by using an external transceiver. Table 3 shows the ATI micro
transceivers available for this purpose.
Table 3: ATI Micro Transceivers
Model
Description
AT-MX25F or AT-MX50F/SM
Fiber Optic (10BASE-FL), SMA Connector
AT-MX26F or AT-MX40F/ST
Fiber Optic (10BASE-FL), ST Connector
AT-MX55F/SC
Fiber Optic (10BASE-FL), SC Connector
AT-210T or AT-210TS or AT-MX20T
UTP (10BASE-T)
AT-MX10 or AT-MX10S
Thin Ethernet (10BASE2)
Back Panel Features
All independently manageable AT-3600 Series hubs have the same back
panel layout and features. An AT-3606F is shown in Figure 16:
TM
CentreCOM3606F
FIRMWARE CASSETTE
INTERREPEATER BUS
IEEE 802.3 / ETHERNET 10BASE-FL/FOIRL
6 PORT HUB / REPEATER
with Network Management
STATUS
POWER
Firmware
cassette
port
Interrepeater
bus port
MASTER
FAULT
Hub status
LEDs
Figure 16: AT-3606F Back
Panel
❑
❑
❑
Firmware Cassette slot used to install new network management
software; see CentreCOM 3600 Series and AT-S4 Firmware Module
Network Operations Manual.
Interrepeater bus connector that attaches the AT-3600 module to
the backplane bus in a concentrator chassis.
Status indicators providing information on the hub as a whole; for
convenience, these LEDs appear on both the front and back panels
of each AT-3600 module.
17
Hardware Installation
LED Displays
AT-3600 Series hubs have two types of LED displays:
❑
❑
Hub Status Indicators
Hub status indicators show the overall condition of the module.
Port indicators show the condition of each port connection. They
vary with module type; later chapters of this manual give specifics.
The LEDs shown in Figure 17 appear on the back panel of each AT-3600
Series hub.
STATUS
POWER
MASTER
FAULT
Figure 17: Hub Status LEDs
POWER—Green whenever power is applied.
MASTER— Amber indicates the currently active Master. (Illuminates on
the Master or on the Backup when the Backup has taken over the Master
function).
FAULT—(OFF under normal operational conditions):
❑
❑
Stays red for a very short time while power-on/reset diagnostics are
run; remains continually red if a malfunction occurs during the
diagnostics.
Turns red (on a Master only) if the Master fails; if the Backup
detects a failure of the Master, the Backup takes over the Master
function.
Note
If the Master fails, its software may not be able to turn OFF its own Master
LED; consequently, the Master LED may be illuminated on two modules in
the backplane. In this kind of failure, however, the original Master’s Fault
LED will also be illuminated to indicate the failure.
The AT-3612T has additional hub indicators; see Chapter 6 for details.
18
CentreCOM 3600 Series Hub/Repeaters
Troubleshooting the Installation
This section provides a checklist for resolving problems associated with
your hub and cabling. The first rule of troubleshooting is to isolate the
problem. As you experiment, only vary one factor at a time. Substitute
known good equipment and see if the problem persists or is eliminated.
As a preliminary check, perform the following steps
1. Do not overlook the obvious—check diagnostic LEDs and make
sure the cables and connectors are securely attached.
2. If there is no power indication, check to be sure the power plug is
properly seated at the hub and at the AC receptacle.
3. (UTP models only) If the UTP Link indicator does not illuminate,
make sure the cabling is intact and connected to a functioning port on
the network. Check the cable configuration to make sure the
connectors are wired correctly and a cross-over cable is not necessary
(see Appendix A for details).
4. Use only UTP cable designed for use in 10BASE-T applications.
10BASE-T wiring lengths should not exceed 100 meters (328 ft.). The
wiring should be routed away from devices known to emit
electromagnetic interference, such as fluorescent lights, photocopiers,
power transformers and relay equipment.
5. If the Link indicator illuminates on a 10BASE-T segment, but
data transfer is slow, collision-prone or non-existent, verify that
your UTP cable is of Level 3, 4 or 5. Level 1 and 2 voice-quality cable
will not work properly. If the cable is more or less round in section, you
probably have data-grade cable. If, however, the cable appears flat
(such as “Silver Satin” telephone-type cable), you probably have voicegrade cable which may cause transmission problems. If it looks like
telephone cable, double check it. Also, if the wire pairing is incorrect,
you may get a Link indication but have high data error rates.
6. If the Link indicator does not illuminate on a fiber optic
segment, check to be sure the connectors are properly seated and that
Receive connects to Transmit on the network device and vice versa.
Check to be sure the cable conforms to specification and that the
distance has not been exceeded (see Chapter 3 for more information.)
7. If data transfer is slow, collision-prone or non-existent on a
10BASE2 (BNC) port, make sure the segment is properly terminated
on both ends and that there is no other termination between these two
points. Also make sure the Terminator Switch is set correctly (see
Chapter 5).
8. If too many collisions are present on an AUI connection, check
to ensure that the external Ethernet transceiver connected to the AUI
port has the SQE Test (Heartbeat) function disabled. Excessive
network loading can also cause excessive collisions.
9. If a fault occurs (fault light stays ON), disengage the hub module
from the backplane, unplug and replug the power cord and reseat the
module.
10. If a Fault light illuminates at power-up, turn off the power and
power-up a second time. Alternatively, insert a firmware cassette in
the back-panel port of the unit. If neither of these actions corrects the
problem, initiate a Return Material Authorization (RMA) to ATI.
19
Chapter 3
AT-3606F and AT-3606F/SMA Connectivity
AT-3606F and AT-3606F/SMA Modules
The AT-3600 Series includes two manageable hub modules with fiber optic
(10BASE-FL) ports. Both models have six fiber optic ports; the only
difference is the connector attachment type. The ST model has attachment
points with two pins to connect bayonet-style ST (Straight Tip) connectors;
the SMA (Sub Miniature Assembly) model has threaded attachment
points to connect SMA connectors.
Figure 18 shows the front and back panels of the AT-3606F hub module.
The following section describes the connectors in detail.
Front
Port
activity
LEDs
ST connectors
AUI port
10BASE-FL/FOIRL NETWORK PORTS 1-6
RS232
port
RS-232
TERMINAL PORT
1
2
3
4
5
6
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
Power
receptacle
STATUS
POWER
CentreCOM 3606F
TM
FAULT
AUI
IEEE 802.3/ETHERNET 10BASE-FL/FOIRL
6 PORT HUB / REPEATER
with Network Management
MASTER
TX
RX
RECEIVE
TX
RX
RECEIVE
TM
TX
RX
RECEIVE
CentreCOM3606F
TX
RX
RECEIVE
TX
RX
RECEIVE
TX
POWER
RX
RECEIVE
FIRMWARE CASSETTE
APPLIQUÉ PORT
INTERREPEATER BUS
IEEE 802.3 / ETHERNET 10BASE-FL/FOIRL
6 PORT HUB / REPEATER
with Network Management
STATUS
POWER
MASTER
FAULT
Back
Firmware cassette
port
Interrepeater
bus port
Hub status
LEDs
Figure 18: AT-3606F Front and
Back Panels
21
AT-3606F and AT-3606F/SMA Connectivity
Fiber Optic (10BASE-FL) Wiring Specifications
The IEEE FOIRL standard limits a fiber segment length to 1 km
(3,280 ft.). That is, the fiber optic cable that connects two hubs is limited
to 1 km (3,280 ft.). On the other hand, the more recent IEEE 10BASE-FL
standard limits a fiber segment length to 2 km (6,560 ft.). Note, however,
that this only applies to topologies in which one 10BASE-FL node
connects to another 10BASE-FL node. You can intermix 10BASE-FL
and FOIRL nodes, but if the cable connects a 10BASE-FL node at one
end and a FOIRL node at the other, the segment length is limited to 1 km
(3,280 ft.).
AT-3606F and AT-3606F/SMA hubs support 62.5/125 micron and 50/125
micron duplex optical fiber cable (duplex refers to fiber optic cable pairs).
Normally, duplex fiber optic cable is labeled TX or TD (transmit) and RX or
RD (receive). This means it has a dedicated transmit cable and a dedicated
receive cable. You must connect the receiving port (RX or RD) on one
device to the transmitting (TX or TD) port on a second device for proper
connectivity.
To connect a network device to one of the fiber optic ports on the AT-3606F
Series hub:
1. Attach both connectors at one end of the cable to the TX and RX ports
on the network device.
2. Connect one of the paired connectors at the other end of the cable to the
RX port on the hub.
3. Check for On Line indicator to illuminate.
4. When the On Line indicator illuminates, connect the other of the
paired connectors to the TX port on the hub.
or
5. If On Line stays off, unplug the connector from RX and use the other of
the pair.
Fiber Optic
Connectors
Fiber optic hubs use one pair of ST or SMA type connectors per port
connection.
ATI offers hub models with either ST or SMA ports because many existing
(usually older) networking environments use SMA (or Biconic) connectors
that are not physically compatible with ST connectors. ST connectors have
recently become popular because they have less attenuation and
vulnerability to human error than SMA connectors.
If you are presently in a network that uses both systems, an ST-SMA,
hybrid cable is commercially available; it allows easy conversion from one
type of connector to the other. This cable is a one-meter duplex fiber optic
cable with ST connectors on one end and SMA connectors on the other.
22
CentreCOM 3600 Series Hub/Repeaters
Figure 19 shows the bayonet-style ST connectors.
Figure 19: ST Connectors for
Fiber Optic Cabling
Attention
The ST connector is keyed. Gently rotate the connector to ensure proper
mating of the ST plug receptacle. Be careful not to force the connector
mating or you might damage the hub’s connector.
Figure 20 shows the threaded SMA connectors.
Figure 20: SMA Connectors for
Fiber Optic Cabling
Port Indicators
The port indicators on the AT-3600 Series hub front panels provide visual
diagnostic and activity information for network analysis. The indicators
are either an individual port LED or a central indicator for box level
monitoring.
23
AT-3606F and AT-3606F/SMA Connectivity
Each fiber optic port supports the following indicator functions with two
single-color front panel LEDs per port, as shown in Figure 21.
Port
1
Port
activity
LEDs
ON LINE
TX
RX
RECEIVE
Figure 21: AT-3606F Port
Indicators
ON LINE (Steady Green)—This indicates that the particular port has a
valid link and is not partitioned.
If you fail to get an ON LINE light, one or more of the following conditions
may be occurring:
❑
❑
❑
❑
Network device at other end is turned OFF (transmitter is
inactive).
Cable is damaged or broken, or attenuation is too high (i.e., too
little light is being received because the cable is too long).
RX Port has failed.
The cabling is incorrect. The RX Port is not connected to TX at the
other end, and you need to reverse the connectors.
RECEIVE (Flashing Amber)—This indicates that the port is receiving
Ethernet packets
24
Chapter 4
AT-3606F/SM, SC, ST Connectivity
Fiber Optic Ports
ATI offers three management-capable hubs, each with six fiber optic ports.
The only physical difference among the three models is the connector
attachment type:
❑
❑
❑
ST (Straight Tip) model has attachment points with two pins to
connect bayonet-style.
SC (Subscriber Channel) model has a square push-pull mating
interface.
SM (Sub Miniature Assembly) model has a threaded attachment
for connection with the module port.
Table 4 lists the model numbers, port counts, and media connector type for
each.
Table 4: AT-3606F Series Hubs with Management
Model Number
Port
Count
AT-3606F/ST
6
Fiber Optic (10BASE-FL)
with Straight Tip (ST) Connectors
AT-3606F/SC
6
Fiber Optic (10BASE-FL)
with Subscriber Channel (SC) Connectors
AT-3606F/SM
6
Fiber Optic (10BASE-FL)
with Sub Miniature Assembly (SMA) Connectors
Media/Connector Type
Figure 22 through Figure 24 show the front and back panels of the
AT-3606F/SM, SC, ST repeater modules.
25
AT-3606F/SM, SC, ST Connectivity
Port
activity
LEDs
Front
AUI
port
RS232
port
Hub
status
LEDs
6 SM ports
Back
Firmware
cassette port
Figure 22: AT-3606F/SM Front
and Back Panels
Interrepeater
bus port
.
Port
activity
LEDs
AUI
port
RS232
port
Front
6 SC ports
1
Back
Figure 23: AT-3606F/SC Front
and Back Panels
26
2
Firmware
cassette port
Interrepeater
bus port
Hub
status
LEDs
CentreCOM 3600 Series Hub/Repeaters
AUI
port
Port
activity
LEDs
Front
RS232
port
Hub
status
LEDs
6 ST ports
Back
Figure 24: AT-3606F/ST Front
and Back Panels
Firmware
cassette
port
Interrepeater
bus port
Fiber Optic (FOIRL, 10BASE-FL) Wiring Specifications
The IEEE FOIRL standard limits a fiber segment length to 1 km (3,280 ft.).
That is, the fiber optic cable that connects two repeaters is limited to 1 km
(3,280 ft.). On the other hand, the more recent IEEE 10BASE-FL standard
limits a fiber segment length to 2 km (6,560 ft.). Note, however, that this
only applies to topologies in which one 10BASE-FL node connects to
another 10BASE-FL node. You can intermix 10BASE-FL and FOIRL
nodes, but if the cable connects a 10BASE-FL node at one end with a
FOIRL node at the other, the segment length is limited to 1 km (3,280 ft.).
AT-3606F/SM, SC, and ST hubs support 62.5/125 micron and 50/125
micron duplex optical fiber cable (duplex refers to fiber optic cable pairs).
Normally, duplex fiber optic cable is labeled TX or TD (transmit) and RX or
RD (receive). This means it has a dedicated transmit cable and a dedicated
receive cable. You must connect the receiving port (RX or RD) on one
device to the transmitting (TX or TD) port on a second device for proper
connectivity.
To connect a network device to one of the fiber optic ports on an AT-3606F
Series hub:
1. Attach both connectors at one end of the cable to the TX and RX ports
on the network device.
2. Connect one of the paired connectors at the other end of the cable to the
RX port on the hub.
3. Check for Link indicator to illuminate.
27
AT-3606F/SM, SC, ST Connectivity
4. When the Link indicator illuminates, connect the other of the paired
connectors to the TX port on the hub.
or
5. If Link stays off, unplug the connector from RX and use the other of the
pair.
Fiber Optic
Connectors
Fiber optic repeaters use one pair of ST, SC, or SMA type connectors per port
connection.
ATI offers repeater models with any one of the three types (ST, SC, or SM)
because many existing (usually older) networking environments use SMA (or
Biconic) connectors that are not physically compatible with ST or SC
connectors. ST and SC connectors have recently become popular because
they have less attenuation and vulnerability to human error than SMA
connectors.
If your existing network uses a mix of ST, SC, and/or SC systems, a hybrid
cable is commercially available. This cable allows easy conversion from one
type of connector to the other. This cable is a one-meter duplex fiber optic
cable with one type of connector pairs on one end and another type of
connector pairs on the other.
Figure 25 shows the bayonet-style ST connectors.
Figure 25: ST Connectors for
Fiber Optic Cabling
Attention
The ST connector is keyed. Gently rotate the connector to ensure proper
mating of the ST plug receptacle. Be careful not to force the connector
mating or you might damage the hub’s connector.
Figure 26 shows the SC (Subscriber Channel) connector with square pushpull mating interface. Also shown is the optional duplexing clip. This clip
helps prevent confusion between the transmit/receive (TX/RX) left-right
sequence when an SC connector is plugged into an SC port.
28
CentreCOM 3600 Series Hub/Repeaters
Optional
duplexing
clip
Figure 26: SC Connector for
Fiber Optic Cabling
Figure 27 shows the threaded SMA connectors.
Figure 27: SMA Connectors for
Fiber Optic Cabling
Port Indicators
The port indicators on the front panels of AT-3600 Series hubs provide
visual diagnostic and activity information for network analysis. The
indicators are either an individual port LED or a central indicator for boxlevel monitoring.
Each fiber optic port supports the following indicator functions with one
dual-color front panel LED per port, as shown in Figure 28.
1
Port
activity
LED
(dualcolor)
Figure 28: AT-3606F/SC Port
Indicators
29
AT-3606F/SM, SC, ST Connectivity
LINK (Steady Green)—This indicates that the particular port has a valid link
and is not partitioned.
If you fail to get a Link light, one or more of the following conditions may be
occurring:
❑
❑
❑
❑
Network device at other end is turned OFF (transmitter is inactive).
Cable is damaged or broken, or attenuation is too high (i.e., too little
light is being received because the cable is too long).
RX Port has failed.
The cabling is incorrect. The RX Port is not connected to TX at the
other end, and you need to reverse the connectors.
RECEIVE (Flashing Green)—This indicates that the port is receiving
Ethernet packets.
PARTITIONED (Steady Amber)—A steady amber port indicator means
the port is partitioned or segmented from the rest of the ports. This
partitioning may be associated with a management function or with an error
condition on the link.
COLLISION (Flashing Amber)—A momentary amber flash occurs when a
collision is detected on the port.
30
Chapter 5
AT-3608 Connectivity
AT-3608 Modules
The AT-3608 has eight 10BASE2 ports with BNC connectors. Figure 29
shows the AT-3608 faceplate; the following sections describe the
connectors in detail.
Port activity LEDs
8 BNC connector ports
Front
10 BASE 2 NETWORK PORTS 1-8
RS-232
TERMINAL PORT
NORMAL /CASCADE
1
2
3
4
5
6
7
STATUS
POWER
8
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON
ON
ON
ON
ON
ON
ON
ON
AUI
FAULT
IEEE 802.3/ETHERNET 10 BASE 2
8 PORT HUB / REPEATER
with Network Management
MASTER
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
FIRMWARE CASSETTE
RECEIVE
POWER
APPLIQUÉ PORT
INTERREPEATER BUS
IEEE 802.3 / ETHERNET 10 BASE 2
8 PORT HUB / REPEATER
with Network Management
STATUS
POWER
MASTER
FAULT
Back
Firmware
cassette
port
Figure 29: AT-3608 Front and
Back Panels
Interrepeater
bus port
Hub
status
LEDs
Ports 1 through 7 are standard 10BASE2 network ports, suitable for
connecting workstations or other network devices via 10BASE2 segments.
Cascade Capability
Located on the front panel and labeled NORMAL/CASCADE, Port 8
(shown in Figure 30) has been specifically designed with a cascading
(uplink) capability that allows two (or more) repeaters to appear as a
single repeater with supplemented ports. You can use it in the following
ways:
❑
❑
To connect a network device, as you would any of the other ports.
To extend the network to another hub through the link segment.
31
AT-3608 Connectivity
FOIRL NETWORK PORTS 1-8
1
2
3
4
5
RS-232
TERMINAL PORT
6
7
STATUS
POWER
8
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON
ON
ON
ON
ON
ON
ON
ON
CentreCOM 3608
FAULT
IEEE 802.3/ETHERNET 10 BASE 2
MULTIPORT HUB / REPEATER
with Network Management
MASTER
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
POWER
RECEIVE
APPLIQUÉ PORT
Normal
or
cascade
port
switch
NORMAL/CASCADE
8
ON LINE
N LINE
ON
OFF
F
TERMINATOR
ATOR
RECEIVE
CEIVE
Figure 30: Normal/Cascade
Port
Port 8 can be used as either a normal port or a cascading port. To be used
as a normal port, Port 8 must be grounded at either the repeater or at the
DTE, as recommended by IEEE specifications. Grounding is necessary
because Port 8 is NOT tied to chassis ground. This means that ground
loops are possible unless there is a connection to a port that has a chassis
ground. In this case, Ports 1 through 7 all have chassis grounds.
Cascading through Port 8 of a single, standalone AT-3608 hub to a second
AT-3608 hub effectively enables the network to consist of 14 nodes.
If you use Port 8 to cascade hubs, therefore, you should connect the other
end of the link segment to Port 1 of the second hub, as shown in Figure 31.
Port 8
10 BASE 2 NETWORK PORTS 1-8
RS-232
TERMINAL PORT
NORMAL / CASCADE
1
2
3
4
5
6
7
STATUS
POWER
8
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON
ON
ON
ON
ON
ON
ON
ON
AUI
FAULT
IEEE 802.3/ETHERNET 10 BASE 2
8 PORT HUB / REPEATER
with Network Management
MASTER
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
POWER
APPLIQUÉ PORT
10 BASE 2 NETWORK PORTS 1-8
RS-232
TERMINAL PORT
NORMAL / CASCADE
1
2
3
4
5
6
7
STATUS
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON
ON
ON
ON
ON
ON
ON
ON
AUI
FAULT
MASTER
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
RECEIVE
Figure 31: AT-3608 Cascade
Connection
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
POWER
8
ON LINE
RECEIVE
RECEIVE
IEEE 802.3/ETHERNET 10 BASE 2
8 PORT HUB / REPEATER
with Network Management
POWER
APPLIQUÉ PORT
Port 1
Note, however, that no more than four AT-3608 hubs (with twenty-six
ports) can be included in a single segment of cable. That is, it cannot
violate the four-repeater rule.
The Four Repeater Rule. The IEEE 802.3 standard provides general
rules for 10BASE-T cable length and network connections on single segments
of cable or on point-to-point links with media attenuation and signal
propagation delays. The basic rule is that the maximum number of hubs/
repeaters in the data path between any two nodes is four.
32
CentreCOM 3600 Series Hub/Repeaters
10BASE2 Wiring Specifications
10BASE2 (or thinnet) requires a thin coaxial cable, RG58. RG58 is a
10 MHz, baseband cable connected with BNC-series connectors. The cable
must be terminated with 50 Ω terminators and grounded at one end.
Maximum segment length is 185 meters (606 ft.).
Thinnet coaxial cable is plugged directly into the BNC receptacle for Ports
1 through 8. Next to each of these ports is a 50 Ω termination switch. If
you install a BNC-T connector with a 50 Ω resistor like the one shown in
Figure 32, you must disable the ports’ internal termination by turning the
switch OFF).
Figure 32: BNC-T at End of
10BASE2 Segment
If you install a coaxial cable segment without a BNC-T connector at the
end (as shown in Figure 33), you must enable the internal termination of
the port by turning the 50 Ω termination switch ON.
Figure 33: BNC Connector
33
AT-3608 Connectivity
Port Status Indicators and Terminator Switch
The port status indicators on AT-3600 Series hub front panels provide
visual diagnostic and activity information for network analysis. The
indicators are either an individual port LED or a central indicator for box
level monitoring.
Port Indicators
Each 10BASE2 port supports the following indicator functions with two
single-color front panel LEDs per port, shown in Figure 34:
ON LINE (Steady Green)— Indicates that the port is not partitioned.
RECEIVE (Flashing Amber)— Indicates that the port is receiving
Ethernet packets.
1
ON LINE
Terminator
switch
toggle
ON
OFF
Port
activity
LEDs
TERMINATOR
RECEIVE
Figure 34: BNC Port Detail
Terminator Switch
Figure 34
also shows the location of the 50 Ω Terminator switch included at each
BNC port receptacle:
OFF (disabled)—Use the OFF position if you are installing a coaxial cable
segment with a BNC-T connector on this port.
ON (enabled)—Use the ON position if you are installing a coaxial cable
segment without a BNC-T connector at this port and the unit is at the end
of the cable. This is the default switch position.
34
Chapter 6
AT-3612T Connectivity
AT-3612T Modules
The AT-3612T has 12 10BASE-T ports incorporated in a Telco 50-pin
(RJ21) connector. The RJ21 50-pin Telco port on AT-3612T hub is shown in
Figure 35. A pin-out table and information on attachment accessories is
available in Appendix B
RJ21
Telco
port
Appliqué
port
Port
RS232
activity
port
LEDs
Front
Hub status LEDs
Back
Firmware
cassette port
Interrepeater
bus port
Figure 35: AT-3612T Front and
Back Panels
35
AT-3612T Connectivity
Hub Status Indicators
Figure 36 illustrates the layout of the hub indicators.
STATUS
COLLISION
MASTER
P
O
W
E
R
FAULT
ACTIVITY
Figure 36: AT-3612T Hub
Indicators
POWER—Green whenever power is applied.
FAULT—(OFF under normal operational conditions):
❑
❑
Stays red for a very short time while power-on/reset diagnostics are
run; remains red if a malfunction is detected during the
diagnostics.
Turns red (on a Master module only) if the Master module fails; if
the Backup detects the failure, it takes over the Master function.
MASTER— Amber (on the Master module or on the Backup when it has
taken over the Master module function) indicates the currently active
Master module.
Note
If the Master fails, its software may not be able to turn OFF its own Master
LED; consequently, the Master LED may be illuminated on two modules.
In this kind of failure, however, the original Master module’s Fault LED
will also be illuminated to indicate the failure. For diagnostic purposes, the
Fault LED takes precedence over the Master LED.
COLLISION —This indicator will flash whenever a collision is detected
on any port.
ACTIVITY—This indicator will flash when Ethernet packets are being
transmitted to any port.
36
CentreCOM 3600 Series Hub/Repeaters
Port Status Indicators
The port indicators on the AT-3600 Series hub front panels provide visual
diagnostic and activity information for network analysis.
The AT-3612T has a central bank of indicators, as shown in Figure 37.
PORT ACTIVITY
PORT STATUS
No Link
Link
Receiving
OFF
Green ON
Green FLASHING
INDICATOR STATUS
Partitioned
Collision
Amber ON
Amber FLASHING
1
3
5
7
9
11
2
4
6
8
10
12
Figure 37: AT-3612T Port LEDs
Each 10BASE-T port supports the following indicator functions with one
dual-color front panel LED per port. Note that the LEDs do not reflect
real-time activity because a data packet is too fast for the human eye to
distinguish on the LED indicator; therefore, the hub artificially stretches
the LED ON time for easier observation.
LINK (Steady Green)—This indicates that the particular port has a valid
link and is not partitioned.
RECEIVING (Flashing Green)—When a port’s LED is blinking, the port
is receiving Ethernet packets.
PARTITIONED (Steady Amber)—A steady amber port indicator means
the port is partitioned or segmented from the rest of the ports. This
partitioning may be associated with a management function or with an
error condition on the link.
COLLISION (Flashing Amber)—A momentary amber flash occurs when
a collision is detected on the port.
NO LINK (No Light)—If the Link Test function is not met by the
10BASE-T device at the opposite end of the UTP segment, this LED will
not illuminate. This may occur if the workstation at the end of the
segment is turned off or if the UTP segment is disrupted or damaged.
37
Chapter 7
AT-3612TR Connectivity
AT-3612TR Modules
The AT-3612TR has 12 10BASE-T ports represented by 12 RJ45
connectors for UTP. Figure 38 shows the AT-3612TR faceplate; the
following section describes the connectors. For information about UTP
wiring, refer to Appendix A.
Front
RJ45 ports
RS232
Port
port
activity
LEDs
Appliqué
port
Hub
status
LEDs
Back
Firmware
cassette
port
Interrepeater
bus port
Figure 38: AT-3612TR Front
and Back Panels
39
AT-3612TR Connectivity
RJ45 Connectors
The AT-3612TR uses 12 RJ45 connectors. Figure 39 shows a RJ45
connector.
Pin1
Figure 39: RJ45 Connector
Port Indicators
Port indicators on AT-3600 Series hub front panels provide visual
diagnostic and activity information for network analysis. The AT-3612TR
provides a central bank of indicators for box-level monitoring.
As shown in Figure 40, each 10BASE-T port supports the following
indicator functions with one single-color front panel LED per port:
PORT ACTIVITY
PORT STATUS
INDICATOR STATUS
No Link
Link
Receiving
Indicator OFF
Indicator ON
Indicator FLASHING
1
3
5
7
9
11
2
4
6
8
10
12
Figure 40: AT-3612TR Port
LEDs
LINK (Steady Green)—This indicates that the particular port has a valid
link and is not partitioned.
RECEIVING (Flashing Green)—When a port’s LED is blinking, the port
is receiving Ethernet packets.
NO LINK (No Light)—If the Link Test function is not met by the
10BASE-T device at the opposite end of the UTP segment, this LED will
not illuminate. This may occur if the workstation at the end of the
segment is turned OFF or if the UTP segment is disrupted or damaged.
40
Chapter 8
AT-3624T Connectivity
AT-3624T Modules
The AT-3624T has 24 10BASE-T ports incorporated in two Telco 50-pin
(RJ21) receptacles for UTP. Figure 41 shows the AT-3624T faceplate. A
pin-out table and information on attachment accessories is available in
Appendix B.
Telco (RJ21) ports
Port
activity
LEDs
AUI
port
RS232
port
Hub
status
LEDs
Front
Back
Figure 41: AT-3624T Front and
Back Panels
Firmware
cassette
port
Interrepeater
bus port
41
AT-3624T Connectivity
Port Indicators
Port indicators on the AT-3600 Series hub front panels provide visual
diagnostic and activity information for network analysis. The AT-3624T
has one dual-color LED corresponding to each numbered port connection,
as shown in Figure 42. A central diagnostic key provides a ready reference
to the indicator meanings:
Port activity LEDs
1
2
3
4
5
6
7
8
9
10
11
12
10 BASE-T
PORT ACTIVITY
INDICATOR STATUS –– PORT STATUS
OFF ––––––––––––––– NO LINK
ON GREEN –––––––––– LINK
FLASHING GREEN –––– RECEIVING
ON AMBER ––––––––– PARTITIONED
FLASHING AMBER ––– COLLISION
10 BASE-T PORTS 1-12
Figure 42: AT-3624T Port LEDs
LINK (Steady Green)—This indicates that the particular port has a valid
link and is not partitioned.
RECEIVING (Flashing Green)—When a port’s LED is blinking, the port
is receiving Ethernet packets.
PARTITIONED (Steady Amber)—A steady amber port indicator means
the port is partitioned or segmented from the rest of the ports. This
partitioning may be associated with a management function or with an
error condition on the link.
COLLISION (Flashing Amber)—A momentary amber flash occurs when
a collision is detected on the port.
NO LINK (No Light)—If the Link Test function is not met by the
10BASE-T device at the opposite end of the UTP segment, this LED will
not illuminate. This may occur if the workstation at the end of the
segment is turned off or if the UTP segment is disrupted or damaged.
42
Chapter 9
AT-3624TR Connectivity
AT-3624TR Modules
The AT-3624TR has 24 10BASE-T ports represented by 24 RJ45
connectors for UTP. The ports are double stacked, in two rows of 12 ports
each. Figure 43 shows the AT-3624TR faceplate; the following section
describes the connectors. For information about UTP wiring, refer to
Appendix A.
MDI/MDI-X
switch
Port
activity
LEDs
RJ45 ports
AUI port
RS232
port
Front
RS-232
TERMINAL PORT
3
5
7
9
11
13
15
17
19
21
23
2
4
6
8
10
12
14
16
18
20
22
24
STATUS
POWER
MDI-X
AUI
FAULT
MASTER
1
X
3
X
2
5
X
4
7
X
6
9
X
8
11
X
10
13
X
12
15
X
14
17
X
16
19
X
18
21
X
20
23
X
22
24
INDICATOR STATUS ––– PORT STATUS
OFF ––––––––––––– NO LINK
ON AMBER ––––––– PARTITIONED
ON GREEN –––––––– LINK
FLASHING AMBER – COLLISION
FLASHING GREEN –– RECEIVING
FIRMWARE CASSETTE
POWER
APPLIQUÉ PORT
INTERREPEATER BUS
CentreCOM 3624TR
10 BASE-T PORT ACTIVITY
1
IEEE 802.3/ETHERNET 10 BASE-T
24 PORT HUB / REPEATER with Network Management
MDI
STATUS
CentreCOM 3624TR
IEEE 802.3 / ETHERNET 10 BASE-T
24 PORT HUB / REPEATER
with Network Management
POWER
MASTER
FAULT
Back
Firmware
module port
Interrepeater
bus port
Hub
status
LEDs
Figure 43: AT-3624TR Front
and Back Panels
43
AT-3624TR Connectivity
RJ45 Connectors
The AT-3624TR uses 24 RJ45 connectors. Figure 44 shows a sample RJ45
connector.
Pin1
Figure 44: RJ45 Connector
MDI/MDI-X Switch
The 24 10BASE-T RJ45 ports on the AT-3624TR are generally used for
network connections between a hub and a transceiver. Network
connections require a standard “straight-through” cable, meaning that a
pin at one end connects to a pin with the same number at the other end.
However, you may want to use one of these ports to link one hub to
another hub. This type of connection requires the signal to “crossover,” so
that the TX (transmit) pin at one end connects to the RX (receive) pin at
the other end. You can accomplish this in either of two ways:
❑
❑
You can use a special cross-over cable, available commercially at
most electronic outlets.
You can use a built-in MDI/MDI-X switch for internally crossing
the signal over, before it is transmitted through the cable.
ATI has incorporated an MDI/MDI-X switch into the AT-3624TR module
(see Figure 45). The Medium Dependent Interface (MDI/MDI-X) switch at
the upper left corner of the AT-3624TR front panel converts RJ45 Port 1
from a normal network connector into an internally crossed-over port for
hub-to-hub connection:
❑
❑
44
The default setting for the switch is MDI-X (standard RJ45 port).
If you want to use Port 1 to connect two hubs, you must set the
switch on one, and only one, of the hubs to the MDI position.
CentreCOM 3600 Series Hub/Repeaters
RS-232
TERMINAL PORT
5
7
9
11
13
15
17
19
21
23
2
4
6
8
10
12
14
16
18
20
22
24
STATUS
AUI
FAULT
MASTER
1
X
3
X
2
5
X
4
7
X
6
9
X
8
11
X
10
13
X
12
15
17
X
14
19
X
16
X
18
21
X
20
23
X
22
24
INDICATOR STATUS ––– PORT STATUS
OFF ––––––––––––– NO LINK
ON AMBER ––––––– PARTITIONED
ON GREEN –––––––– LINK
FLASHING AMBER – COLLISION
FLASHING GREEN –– RECEIVING
POWER
APPLIQUÉ PORT
POWER
TM
3
CentreCOM 3624TR
10 BASE-T PORT ACTIVITY
1
IEEE 802.3/ETHERNET 10 BASE-T
24 PORT HUB / REPEATER with Network Management
MDI
MDI-X
Switch set
to enable
interrepeater
connection
MDI
MDI-X
1
X
3
X
2
4
Figure 45: MDI/MDI-X Switch
By setting the MDI/MDI-X switch to MDI, you can connect two hubs via
standard straight-through cable. The switch affects Port 1 only. You can
continue to use Ports 2 through 24 for network connections via straightthrough cable, no matter which way you set the MDI/MDI-X switch.
If you connect a straight-through cable (or any cable for that matter)
between two hubs (or any two nodes) and the network LEDs do not
indicate a link condition, you can change the MDI/MDI-X switch. The hub
will not be damaged if the MDI switch is in the wrong position.
Port Indicators
The port indicators on the AT-3600 Series hub front panels provide visual
diagnostic and activity information for network analysis. The AT-3624TR
provides a central bank of indicators for box-level monitoring.
As shown in Figure 46, each 10BASE-T port supports the following
indicator functions with one dual-color front panel LED per port:
10BASE-T PORT ACTIVITY
Figure 46: AT-3624TR Port
LEDs
1
3
5
7
9
11
13
15
17
19
21
23
2
4
6
8
10
12
14
16
18
20
22
24
INDICATOR STATUS ––– PORT STATUS
OFF ––––––––––––– NO LINK
ON AMBER ––––––– PARTITIONED
ON GREEN –––––––– LINK
FLASHING AMBER – COLLISION
FLASHING GREEN –– RECEIVING
45
AT-3624TR Connectivity
LINK (Solid Green)—This indicates that the particular port has a valid
link and is not partitioned.
RECEIVING (Flashing Green)—When a port’s LED is blinking, the port
is receiving Ethernet packets.
PARTITIONED (Steady Amber)—A steady amber port indicator means
the port is partitioned or segmented from the rest of the ports. This
partitioning may be associated with a management function or with an
error condition on the link.
COLLISION (Flashing Amber)—A momentary amber flash occurs when
a collision is detected on the port.
NO LINK (No Light)—If the Link Test function is not met by the
10BASE-T device at the opposite end of the UTP segment, this LED will
not illuminate. This may occur if the workstation at the end of the
segment is turned OFF or if the UTP segment is disrupted or damaged.
46
Appendix A
UTP Reference
UTP Wiring Specifications
10BASE-T requires UTP wiring capable of supporting 10 Megabit data rates.
Use Level 3 or better UTP wiring throughout the 10BASE-T wiring system.
The wire should be 22 to 26 AWG, 100 Ω impedance with 3 to 8 twists per foot.
Typically, if a cable is flat, the pairs are untwisted and will cause problems. A
cable more or less round in section is likely to be twisted.
The specifications of 6 common modular cables and their applicability to
10BASE-T network use are shown in Table 5. The maximum length for
10BASE-T UTP segments is 100 meters (328 ft.).
Table 5: Usable and Unusable Twisted Pair Cable
Cable
Level
Cable Description
AC Character
Specification
Twist/
Foot
10BASE-T
OK?
1
Unshielded untwisted
N/A
CCITT
N/A
NO!
2
Individual UTP
100 Ω ± 30 Ω
RS232 1BASE5
AT&T PDS
N/A
NO!
3
Typical Individual UTP
100 Ω ± 15 Ω
TI, AT&T ISDN
10BASE-T
IBM Type 3
3-5
YES
4
Enhanced Individual UTP
100 Ω ± 30 Ω
EIA, TIA
10BASE-T
NEMA
5-8
YES
5
Individual STP
100 Ω ± 30 Ω
EIA, TIA
10BASE-T
8-10
YES
IBM
Type 1
Individual STP
150 Ω
PCC FT 1
N/A
NO!
47
UTP Reference
UTP Hub-to-MAU
Wiring
Figure 47 shows a UTP cable with an RJ45 connector. For a 10BASE-T link
between a hub and a Medium Attachment Unit (MAU) or Network Interface
Controller (NIC), the cable is wired straight-through. That is, an RJ45
receptacle at the hub would wire pin-to-pin to the RJ45 receptacle at the
MAU, as shown in Figure 48.
Pin 1
Figure 47: RJ45
A
1 Pair twisted as per Level 3, 4 or 5 cable.
RJ45 Pin
1
RJ45 Pin
TD+
1
1
TD+
TD-
2
2
TD-
RD+
3
3
RD+
1
Not Used
4
4
Not Used
Not Used
5
5
Not Used
RD-
6
6
RD-
Not Used
7
7
Not Used
Not Used
8
8
Not Used
B
This cable will not work for 10BASE-T.
Note that 3 and 6 are twisted, but are not a pair.
Figure 48: Hub-to-MAU
Wiring (A) Usable
and (B) Unusable
48
RJ45 Pin
RJ45 Pin
TD+
1
1
TD+
TD-
2
2
TD-
RD+
3
3
RD+
Not Used
4
4
Not Used
Not Used
5
5
Not Used
RD-
6
6
RD-
Not Used
7
7
Not Used
Not Used
8
8
Not Used
CentreCOM 3600 Series Hub/Repeaters
UTP MAU-to-MAU,
Hub-to-Hub Wiring
10BASE-T MAU-to-MAU or hub-to-hub wiring generally requires a
crossover cable located somewhere along the UTP cable run. This may
commonly occur at the punch-down block or between the RJ45 wall
receptacle and the workstation. See Figure 49.
RJ 45 Pin
RJ 45 Pin
1
TD+
1
1
TD+
TD-
2
2
TD-
RD+
3
3
RD+
1
Not Used
4
4
Not Used
Not Used
5
5
Not Used
RD-
6
6
RD-
Not Used
7
7
Not Used
8
Not Used
1 Pair twisted as per level 3, 4 or 5 cable
Figure 49: Hub-to-Hub or
MAU-to-MAU
Wiring
Not Used
8
49
Appendix B
Telco Reference
Wiring Specification
50-Pin Telco
Receptacle
The RJ21 50-pin Telco receptacle on the AT-3612T and AT-3624T Repeaters is
configured as shown in Figure 50.
RD + 26
27 TD +
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Figure 50: 50-Pin Telco
Receptacle
RD -
1
2
TD -
Table 6 on page 52 gives a pin-out chart for the Telco connector.
51
Telco Reference
Table 6: 50-Pin Telco Pin-Out
50-Pin
Connector
Pin Number
PunchDown Block
Pin Number
Cable
Color
Code1
Link
Designation
Hub
8-Pin
Modular
Jack Pin
Numbers
26
1
W-BL
1
RCV POS
1
1
2
BL-W
1
RCV NEG
2
27
3
W-OR
1
XMT POS
3
2
4
OR-W
1
XMT NEG
6
28
5
W-GR
2
RCV POS
1
3
6
GR-W
2
RCV NEG
2
29
7
W-BR
2
XMT POS
3
4
8
BR-W
2
XMT NEG
6
30
9
W0SL
3
RCV POS
1
5
10
SL-W
3
RCV NEG
2
31
11
R-BL
3
XMT POS
3
6
12
BL-R
3
XMT NEG
6
32
13
R-OR
4
RCV POS
1
7
14
OR-R
4
RCV NEG
2
33
15
R-GR
4
XMT POS
3
8
16
GR-R
4
XMT NEG
6
34
17
R-BR
5
RCV POS
1
9
18
BR-R
5
RCV NEG
2
35
19
R-SL
5
XMT POS
3
10
20
SL-R
5
XMT NEG
6
36
21
BK-BL
6
RCV POS
1
11
22
BL-BK
6
RCV NEG
2
37
23
BK-OR
6
XMT POS
3
12
24
OR-BK
6
XMT NEG
6
38
25
BK-GR
7
RCV POS
1
13
26
GR-BK
7
RCV NEG
2
39
27
BK-BR
7
XMT POS
3
14
28
BR-BK
7
XMT NEG
6
NOTE 1. Cable colors may be different from those represented here depending on the
cable manufacturer.
52
CentreCOM 3600 Series Hub/Repeaters
Table 6: 50-Pin Telco Pin-Out (Continued)
50-Pin
Connector
Pin Number
PunchDown Block
Pin Number
Cable
Color
Code1
Link
Designation
Hub
8-Pin
Modular
Jack Pin
Numbers
40
29
BK-SL
8
RCV POS
1
15
30
SL-BK
8
RCV NEG
2
41
31
Y-BL
8
XMT POS
3
16
32
BL-Y
8
XMT NEG
6
42
33
Y-OR
9
RCV POS
1
17
34
OR-Y
9
RCV NEG
2
43
35
Y-GR
9
XMT POS
3
18
36
GR-Y
9
XMT NEG
6
44
37
Y-BR
10
RCV POS
1
19
38
BR-Y
10
RCV NEG
2
45
39
Y-SL
10
XMT POS
3
20
40
SL-Y
10
XMT NEG
6
46
41
V-BL
11
RCV POS
1
21
42
BL-V
11
RCV NEG
2
47
43
V-OR
11
XMT POS
3
22
44
OR-V
11
XMT NEG
6
48
45
V-GR
12
RCV POS
1
23
46
GR-V
12
RCV NEG
2
49
47
V-BR
12
XMT POS
3
24
48
BR-V
12
XMT NEG
6
50
49
V-SL
—
reserved
—
25
50
SL-V
—
reserved
—
NOTE 1. Cable colors may be different from those represented here depending on the
cable manufacturer.
53
Telco Reference
Accessories
50-Pin Telco-to-RJ45
Octopus Cables
The 10BASE-T ‘octopus’ cable breaks out the AT-3612T or AT-3624T Hub
50-pin Telco connector to individual RJ45 connectors. This is an ideal method
for connecting into a patch panel in the wiring closet. Patch panels allow for
easy configuration and reconfiguration of house wiring requirements.
When you purchase an octopus cable, ensure that it is wired for 10BASE-T
and that Level 3 UTP is used. This will help maintain 10 megabit data
integrity throughout the wiring system. “Silver Satin” flat cable is out of
specification and should not be used.
50-Pin Telco-to-RJ45
Harmonica
Figure 51: AT-ADAPT-2
Telco-to-RJ45
Harmonica Adapter
for AT-3612T
54
ATI offers a harmonica adapter, Model AT-ADAPT-2. The harmonica-style
adapter shown in Figure 51 allows direct conversion from the 50-pin Telco
connector to RJ45 receptacles. There are many different standards for the pinout of the harmonica adapter. Ensure that the pin-out of the adapter you use
complies with the 10BASE-T wiring specification. Refer to Table B for the pinout of the Telco connector for the AT-3612T if you order a 10BASE-T
harmonica adapter from a wiring vendor other than ATI.
Appendix C
IEEE 802.3 Quick Primer
10BASE-T
10BASE-T UTP media was implemented to reduce Ethernet wiring costs.
UTP wiring is installed in most buildings for telephone systems. Care must
be taken to ensure that the UTP wiring used for 10BASE-T is able to carry
the high Ethernet data rates before a 10BASE-T network solution is
implemented.
Unlike coaxial Ethernet, 10BASE2 and 10BASE5, 10BASE-T UTP is
point-to-point wiring. Typically, one end is connected to an Ethernet
10BASE-T NIC or transceiver (MAU) and the other end is connected to a
10BASE-T hub (repeater). Straight-through cabling pin-out is used for
hub-to-MAU connections. Hub-to-hub and MAU-to-MAU connections are
allowed using a UTP cable with a cross-over function crossing TD+ and TDwith RD+ and RD- signals. No other attachments are allowed along the
length of the UTP wire; however, wiring patch panels and punch-down blocks
is allowed for interconnecting segments. The cable should be at least Level
3 UTP, 100 Ω impedance, 22 to 26 AWG, and should not exceed 100 meters
(328 ft.) in length from one end to the other. See Table 5 in Appendix A for
comparison of different UTP cables.
Four-Repeater Rule
Up to four repeater/hub units may be connected, for a total of five segments,
provided that two of the segments are link segments. Link segments (such as
fiber) have no MAU attachments. If all segments are coax segments having
MAU attachments, a maximum of two repeater/hub units and three segments
is allowed.
55
IEEE 802.3 Quick Primer
10BASE-FL/FOIRL Ethernet
The IEEE 802.3 10BASE-FL standard supports up to 2,000 meters (6,560 ft.)
of multimode duplex fiber optic cable in a point-to-point link which directly
attaches two devices. FL is compatible with FOIRL, but FOIRL supports
connections of 1,000 meters (3,280 ft.). Duplex refers to support for fiber optic
cable pairs, enabling a two-cable fiber optic connection with transmit mode
dedicated to one cable and receive mode on the other. The wide dynamic
range of a fiber optic interface allows for an easy installation. When
connecting fiber optic cable, the receiving pin (RD) is connected to the
transmitting pin (TD) and vice versa.
10BASE2 (Thin) Ethernet
When configuring thin coax segments, IEEE 802.3 specifications allow up to
30 MAU attachments per cable segment spaced at no less than 0.5 meters
(1.64 ft.) apart and with a cable length less than or equal to 185 meters (606 ft.)
per segment. The worst case propagation delay for a 185 meter (606 ft.) thin
Ethernet segment is 950.9 ns. The propagation delay for thin (10BASE2)
Ethernet cable is 5.14 ns/meter. Both ends of the segment must be terminated
with a 50 Ω termination with a power rating of 0.5 watts or greater. The
segment shield must be earth grounded only at one point on the cable.
10BASE5 (Thick) Ethernet
When configuring 10BASE5 coax segments, IEEE 802.3 specifications allow
100 MAU attachments or less, spaced at multiples of 2.5 meters (8.2 ft.)
measured accurately from the cable end (50 Ω terminator included). The
10BASE5 cable segment cannot exceed 500 meters (1640 ft.) in length. Worstcase end to end propagation delay of a 10BASE5 coax segment is 2165 ns.
Propagation delay of 10BASE5 Ethernet coax is calculated at 4.33 ns/meter.
Both ends of the segment must be terminated with a 50 Ω termination with a
power rating of 0.5 watts or greater. Earth grounding of the segment shield
must take place only at one point on the cable.
AUI Drop Cables
AUI or Drop cables can be no longer than 50 meters (164 ft.) each.
Attachments may be made only to the cable ends at the 15-pin D-shell
connector. AUI Drop cables may have a maximum 257 ns propagation delay,
as used for computing the worst case propagation delay of a cable system.
AUI cable propagation delay is approximately 5.13 ns/meter.
This cable internally consists of four shielded twisted pair wires with an
overall shield and drain wire; a 15-pin D-shell male connector at one end and a
15-pin D-shell female connector at the other end. Cable impedance is
nominally 78 Ω. The AUI cable typically connects a transceiver attached to a
coaxial segment to a DTE (workstation).
56
CentreCOM 3600 Series Hub/Repeaters
Propagation
Propagation delay is the time it takes a signal to travel from the input of a
system component to the output and is usually measured in nanoseconds.
IEEE 802.3 has specific propagation delay maximums for the Ethernet
components. Cable length plays a major role; i.e., a 50 meters (164 ft.) AUI
cable has a maximum propagation delay of 257 ns. The propagation delay of
cable depends on the length and velocity factor of the cable type.
Round-trip propagation delay throughout the entire cable system, from
farthest ends, may not exceed 51.7 µs, ± 4 µs.
57
Appendix D
Glossary
10BASE2—Also called thin Ethernet, thinnet or CheaperNet, a 10 MHz baseband
specification. Cable impedance is 50 Ω and maximum coaxial segment length is
185 meters (607 ft.).
10BASE5—Also called thick Ethernet, a 10 MHz baseband specification. Cable
impedance is 50 Ω and maximum coaxial segment is 500 meters (1,640 ft.). The
cable is commonly referred to as yellow cable. Thick Ethernet cable is typically
used as a trunk or backbone path of the network.
10BASE-FL—IEEE 802.3 Fiber Optic Ethernet. A fiber optic standard that
allows up to 2,000 meters (6,560 ft.) of multimode duplex fiber optic cable in a
point-to-point link.
10BASE-T—IEEE 802.3 UTP Ethernet. Low-cost Level 3 or better UTP wiring
affords 100 meters (328 ft.) of point-to-point link segments. UTP uses RJ45
connectors and sometimes 50-pin Telco connectors to a patch panel and runs at
10 MHz.
50-PIN TELCO (RJ21)—This connector is very common in 10BASE-T wiring.
As opposed to the RJ45 connector, the 50-pin Telco connector concentrates up to
12 UTP connections onto one connection. This concentration of UTP ports is then
broken out for connection to a punch-down block inside a building’s wiring closet.
50-pin Telco connections provide a very clean, uncluttered interface to the
building’s wiring.
AT-ADAPT-2— A harmonica-style adapter that allows direct conversion from a
50-pin Telco connector to RJ45 receptacles.
ATTACHMENT UNIT INTERFACE (AUI)—Connection between a MAU
(transceiver) and a DTE (typically a workstation). Includes a 15-pin D-sub
connector and sometimes a 15-conductor twisted pair cable. Maximum length is
50 meters (164 ft.).
BACKUP MODULE— A repeater that behaves as the management module
when the Master fails in a department concentrator.
BASEBAND COAXIAL SYSTEM—A system whereby information is directly
encoded and impressed on the coaxial transmission medium. At any point on the
medium, only one information signal at a time can be present without disruption.
59
Glossary
BAYONET NUT COUPLE (BNC) CONNECTOR—A 10BASE2 thin coax
connector with push-on BNC locking lug that quickly locks into place with a half
twist.
BIT RATE (BR)—The rate of data throughput on the medium in bits per second.
Ethernet specifies 10 million bits per second.
BIT TIME—The duration of one bit symbol (1/BR). Ethernet specifies a bit time
of 100 ns.
CARRIER SENSE—In a LAN, an ongoing activity of a data station to detect
whether another station is transmitting.
CARRIER SENSE MULTIPLE ACCESS with COLLISION DETECT
(CSMA/CD)—This is the access method employed by IEEE 802.3 LAN
transceivers, by which multiple stations compete for use of the transmission
medium (coax cable) for data packet transmission. It provides for a level of error
detection should that transmission be corrupted or impeded by contention for the
transmission medium.
COAX SEGMENT—A segment of Ethernet cable that contains MAUs.
COAXIAL CABLE—A two-conductor (center conductor, shield system),
concentric, constant impedance transmission line used as the trunk medium in the
baseband system.
COAXIAL CABLE SEGMENT—A length of coaxial cable sections and coaxial
connectors, terminated at each end in its characteristic impedance.
COLLISION—An unwanted condition that results from concurrent
transmissions on the physical medium.
COMPATIBILITY INTERFACE—The MDI coaxial cable interface and the
AUI branch cable interface, the two points at which hardware compatibility is
defined to allow connection of independently designed and manufactured
components to the baseband transmission system.
CROSSOVER—Wiring used when connecting a 10BASE-T MAU to another
10BASE-T MAU or a 10BASE-T hub to another 10BASE-T hub. For example, one
10BASE-T MAU has the TD pair on the same pins as another 10BASE-T MAU. If
pins were wired straight, there would be two transmitters on one pair and no
receiver. As a solution, the crossover cable crosses the TD pair with the RD pair,
to connect the TD pins on one end to the RD pins at the other end.
D-SUB CONNECTOR—The AUI cable uses 15-pin D-sub connectors. “D”
refers to the shape of the connector shell. Also called miniature D, DB15, or DIX
connectors.
DATA COMMUNICATION EQUIPMENT (DCE)—In RS-232 specification, a
module, such as a modem, for connecting a DTE to other equipment. A repeater
connected to a terminal or workstation for OMEGA management use is wired as a
DCE.
DATA TERMINAL EQUIPMENT (DTE)—In RS-232 specification, a module
typically at the end of a segment (i.e., uninterrupted length of Ethernet cable). The
DTE could be an Ethernet workstation, repeater or bridge.
DEPARTMENT CONCENTRATOR—Hub that provides a large number of
workstation connections. The term department concentrator refers to multiple
repeaters housed in an AT-36C8 chassis. See Hub/Repeater, Repeater.
60
CentreCOM 3600 Series Hub/Repeaters
DIX CONNECTOR—See D-Sub Connector
FOIRL — A fiber optic standard that allows up to 1,000 meters (3,280 ft.) of
multimode duplex fiber optic cable in a point-to-point link.
HARMONICA ADAPTER—This adapter provides a simple way to convert the
50-pin Telco connection to RJ45 connections. See AT-Adapt-2.
HEARTBEAT—See SQE
HOT SWAPPING— The process of replacing a hub module without bringing
down the network. This process occurs by sliding an active module into a fully
powered up concentrator, replacing a failed module.
HOUSE WIRING—House wiring is the existing wiring inside a building. This
wiring generally originates from one or more wiring closets, such as a telephone
room. Some older buildings may have wiring unsuitable for 10 megabit data rates.
In these circumstances, it is recommended that the wiring be tested with a
10BASE-T signal/wire tester.
HUB/REPEATER—A hub is a central signal distributor. It is used in a wiring
topology consisting of several point-to-point segments originating from a central
point. The term hub is often used interchangeably with the term repeater.
Multiport 10BASE-T, 10BASE2 and fiber optic (10BASE-FL, FOIRL) repeaters
are considered hubs. See Repeater.
HUB-to-HUB WIRING—See MAU-to-MAU Wiring
HUB-to-MAU WIRING—UTP cables for 10BASE-T hub-to-MAU or NIC cards
are wired straight-through. An RJ45 receptacle at the hub would wire pin-to-pin
to the RJ45 receptacle at the MAU.
IMPEDANCE—An electrical characteristic of a circuit dealing with the
combination of the AC and DC resistance and the appearance of that resistance to
attached circuits.
JABBER LOCK-UP—The MAU’s ability to automatically inhibit the transmit
data from reaching the medium if the transmit data time exceeds a specified
duration. This duration is in the range of 20 ms to 150 ms. Jabber lock-up protects
the medium from being overrun with data packets from a possibly defective
device.
JAM—This is a term used to describe the collision reinforcement signal output by
the repeater to all ports. The jam signal consists of 96 bits of alternating 1s and 0s.
The purpose is to extend a collision sufficiently so that all devices cease
transmitting.
JITTER—The shift of the data bit in respect to a standard clock cycle. Jitter is
undesirable and must be minimized.
LINK SEGMENT—The link segment of coaxial cable is a segment that has no
MAU devices, but links together two LAN devices such as repeaters.
LINK TEST—In 10BASE-T Ethernet there is a link test function that validates
the UTP link. This consists of a pulse transmitted from point A on one pair that is
validated at point B. Point B also transmits a pulse on the second pair to be
validated by point A. These pulses occur during media idle states (in between
packets).
61
Glossary
MANAGED MODULE— An intelligent repeater in a department concentrator
chassis that makes management data available to the Master.
MANAGEMENT AGENT—Software that is used to view hub activity and set
hub variables.
MASTER—A repeater in the topmost position in a department concentrator
chassis that contains and downloads the management agent software to Backup
and Slaves. The Master contains the only active image of the management agent
and controls the management functions of the Backup and Slaves.
MAU—See Medium Attachment Unit
MAU-to-MAU, HUB-to-HUB WIRING—10BASE-T MAU-to-MAU or hub-tohub wiring generally requires a crossover cable located somewhere along the UTP
cable run. This may commonly occur at the punch-down block or between the RJ45
wall receptacle and the workstation.
MAU/TRANSCEIVER—An Ethernet transceiver is a MAU. A 10BASE-T
MAU interfaces the UTP media to an AUI port on a workstation, repeater, bridge
or other Ethernet device.
MDI/MDI-X—See Medium Dependent Interface
MEDIUM ATTACHMENT UNIT (MAU)—In a LAN, a device used in a data
station to couple the DTE to the transmission medium.
MEDIUM DEPENDENT INTERFACE (MDI)—The mechanical and
electrical interface between a hub and a transceiver (MAU). MDI-X is another
version of the interface that enables hubs to connect using different pin-outs,
thereby avoiding conflicts that occur when receiving and transmitting packets use
the same pin-out.
MODULE—A single repeater when it is mounted with other repeaters in an
AT-36Cx or AT-36Ex department concentrator chassis.
N-SERIES—A barrel shaped, threaded connector used on 10BASE5 (thick
Ethernet) coaxial cable.
PATCH PANEL—A 10BASE-T patch panel may be used between a punch-down
block and UTP workstation. The patch panel generally has a female RJ45
connector on the front for each workstation and a Telco (RJ21) connector on the
back, which is wired to a punch-down block. This provides a convenient way for the
installer or network manager to connect the hub 10BASE-T ports into the desired
building locations.
POLARITY CORRECTION—Many 10BASE-T UTP ports have a polarity
correction function. If the UTP wiring has RD- and RD+ inadvertently crossed,
the polarity correction function will sample the signal and electrically swap the
wires. If the TD- and TD+ wires are crossed, the correction would occur at the
MAU on the other end of the UTP link. This occurs within a single pair and should
not be confused with the crossover cable.
PROPAGATION DELAY—The time it takes a signal to travel from the input of
a system component to the output. Usually measured in nanoseconds. IEEE 802.3
has specific propagation delay maxima for computing propagation budgets when
designing a LAN. Cable length plays a major role in propagation delay; for
example, a 50-meter (164-foot) AUI cable has a maximum allowable propagation
delay of 257 ns. The propagation delay of cable depends on the length and velocity
factor of the cable type. There are also propagation delays associated with
electronics attached to the system.
62
CentreCOM 3600 Series Hub/Repeaters
PUNCH-DOWN BLOCK—The punch-down block is the wiring panel where the
house wiring from the building’s offices terminates. This is where many
10BASE-T hubs would be located. Wiring installers use a special punch-down tool
to insert the UTP wire for data and voice applications.
REPEATER—A device used to extend the length, topology, or interconnectivity
of the physical medium beyond that imposed by a single segment, up to the
maximum allowable end-to-end trunk transmission line length. Repeaters perform
the basic actions of restoring signal amplitude, waveform and timing applied to
normal data and collision signals.
RJ45—This connector is a 10BASE-T standard for connecting UTP cabling. It is
inexpensive and easy to install onto UTP cable.
SIGNAL QUALITY ERROR (SQE)—Also referred to as Collision or Collision
Presence. This occurs when two devices attempt to transmit at the same time,
which is an illegal condition. All ATI transceivers test for SQE.
SIMPLE NETWORK MANAGEMENT PROTOCOL (SNMP)— SNMP is a
TCP/IP protocol that generally uses the User Datagram Protocol (UDP) to
exchange messages between a management information base and a management
client residing on a network. Since SNMP does not rely on the underlying
communication protocols, it can be made available over other protocols, such as
XNS or DECnet.
SLAVE— A repeater that behaves as a “dumb” module managed by a Master in
a department concentrator chassis. Slaves operating standalone perform only
simple regeneration and retiming tasks associated with repeating and are not
manageable.
SQE TEST—Commonly referred to as Heartbeat, is a special 802.3 signal sent by
the MAU to the DTE to test the collision detection function. Some DTE want SQE
and others do not. Repeaters do not want the SQE Test.
STANDALONE—Repeater operating as a hub on its own; i.e., not a module
among other modules in a department concentrator chassis.
STRAIGHT-THROUGH—A type of wiring connection where the pins of one
connector interface with the same pins of another connector. For example, pin
1 of one connector connects to pin 1 of another connector.
SUBSCRIBER CHANNEL (SC) CONNECTOR—A type of port connection
where the pins connect through a square push-pull mating interface.
SUB MINATURE ASSEMBLY (SMA) CONNECTOR—A type of port
connection where the pins connect through a threaded attachment interface. (Also
referred to as an SM Connector.)
STRAIGHT TIP (ST) CONNECTOR—A type of port connection where the
pins connect through a bayonet-style interface.
TCP/IP PROTOCOLS—A set of protocols for intercomputer communication,
including network level (Internet Protocol), transport level (Transmission Control
Protocol or TCP) and application level protocols (for example, Telnet terminal
emulation). TCP/IP has been used for many years in two country-wide networks,
the ARPANET and MILNET. Recently, TCP/IP has become very popular with
users of a variety of multi-user computer systems and engineering workstations.
Most UNIX computers use TCP/IP over Ethernet as the main intercomputer
networking technology. TCP/IP is also popular among PC users, particularly as a
means of communication with large multi-user computers.
63
Glossary
TELCO CONNECTOR— A 50-pin receptacle that plugs into the front of the
hub, enabling cables from external devices to connect to the hub.
THICK ETHERNET—See 10BASE5
THIN ETHERNET—See 10BASE2
TRUNK CABLE—The coaxial cable used to distribute signals over long
distances throughout a cable system.
UNMANAGED MODULE— A repeater that behaves as a “dumb” repeater in a
department concentrator chassis (i.e., without a Master). It performs simple
repeating tasks like packet retiming and regeneration, but is not managed.
UNSHIELDED TWISTED PAIR (UTP)—A cable used in 10BASE-T wiring
that consists of at least two twisted pairs of 22 to 26 AWG wire. The pairs should
have at least 3 twists per foot and have an impedance of 100 Ω. Level 3, Level 4 and
Level 5 UTP cables fit these criteria.
64
Appendix E
Technical Support Fax Order
Name _______________________________
____________________________________
Company ____________________________
____________________________________
Address _____________________________
____________________________________
City ____________________State/Province____________ Zip/PostalCode __________
Country _________________ Phone __________________Fax ____________________
Incident Summary
Model number of Allied Telesyn product I am using _____________________________
Firmware release number of Allied Telesyn product _____________________________
Other network software products I am using (e.g., network managers)
____________________________________
____________________________________
Brief summary of problem ______________
____________________________________
____________________________________
____________________________________
Conditions (List the steps that led up to the problem.) ___________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________
Detailed description (Please use separate sheet)
Please also fax printouts of relevant files such as batch files and configuration files.
When completed, fax this sheet to the appropriate ATI office. Fax numbers can be found
on page 69.
65
Appendix F
CentreCOM AT-3600 Manual Feedback
Please tell us what additional information you would like to see discussed in
the manual. If there are topics you would like information on that were not
covered in the manual, please photocopy this page, answer the questions and
fax or mail this form back to Allied Telesyn International (ATI). The mailing
address and fax number are at the bottom of the page. Your comments are
valuable when we plan future revisions of the manual.
On a scale of 1 to 10 (10 being most important), rate the importance of the
following topics in this manual:
Hardware Installation
Diagnostics
SNMP Software
IEEE 802.3 Quick Primer
Cabling
Software Downloading
_______
_______
_______
_______
_______
_______
Hub Management
MIB
Troubleshooting
Reading the LEDs
Telnet Communication
______
______
______
______
______
I found the following the most valuable ______________________________
_________________________________________________________________
_________________________________________________________________
I would like the following more developed ___________________________
_________________________________________________________________
_________________________________________________________________
I would find the manual more useful if _______________________________
_________________________________________________________________
_________________________________________________________________
Please fax or mail your feedback. Fax to 1-206-481-3790. Or mail to:
Allied Telesyn International Technical Publications Department
19015 North Creek Parkway Suite 200
Bothell, WA 98011 USA
67
Appendix G
Where To Find Us
For Technical Support or Service
Location
Phone
Fax
North America
United States, Canada, Mexico, Central America, South America, Australia, New Zealand
1 (800) 428-4835
1 (206) 481-3790
France
France, Belgium, Luxembourg, The Netherlands, Middle East, Africa
(+33) 1-69-28-16-17
(+33) 1-69-28-37-49
Germany
Germany, Switzerland, Austria, Eastern Europe
(+01) 30-83-56-66
(+49) 30-435-70-650
Italy
Italy, Spain, Portugal, Greece, Turkey, Israel
(+39) 2-38093-444
(+39) 2-38093-448
United Kingdom
United Kingdom, Denmark, Norway, Sweden, Finland, Iceland
(+0) 800-20-40-40
(+44) 1-865-390-002
Japan
(+81) 3-3443-5640
(+81) 3-3443-2443
Asia
Singapore, Taiwan, Thailand, Malaysia, Indonesia, Korea, Philippines, China, India
(+65) 383-2050
(+65) 383-2079
Hong Kong
(+852) 2-529-4111
(+852) 2 529-7661
Technical Bulletin Board Service
1 (206) 483-7979
CompuServe
Go ALLIED
Internet (ftp)
ftp://gateway.centre.com
World Wide Web
http://www.alliedtelesyn.com
For Information Regarding Allied Telesyn International Corp.
Allied Telesyn International Corp.
19015 North Creek Parkway Suite 200
Bothell, WA 98011
Tel: 1 (800) 424-4284 or 1 (206) 487-8880
Fax: 1 (206) 489-9191
Allied Telesyn International Corp.
950 Kifer Road
Sunnyvale, CA 94086
Tel: 1 (800) 424-4282 (USA and Canada)
Fax: 1 (408) 736-0100
For Sales Information
United States
Lilburn, GA
Tel: (404) 717-0290, Fax: (404) 717-0806
Salt Lake City, UT
Tel: (801) 350-9130, Fax: (801) 350-9051
Vienna, VA
Tel: (703) 506-0196, Fax: (703) 506-1986
Chicago, IL
Tel: (708) 406-8431, Fax: (708) 406-8462
Austin, TX
Tel: (512) 502-3087, Fax: (512) 794-9326
Dallas, TX
Tel: (214) 446-9873, Fax: (214) 446-8555
Reading, MA
Tel & Fax: (617) 944-3492
Los Angeles, CA
Tel: (310) 412-8684, Fax: (310) 412-8685
Costa Mesa, CA
Tel: (714) 432-6424, Fax: (714) 432-6546
San Diego, CA
Tel: (619) 279-3896, Fax: (619) 279-3897
Clearwater, FL
Tel: (813) 726-0022, Fax: (813) 726-0234
Tunnersville, NJ
Tel: (609) 438-1070, Fax: (609) 468--1201
Canada
Mississauga, Ontario
Tel: (905) 803-8626, Fax: (905) 279-0050
Richmond, British Columbia
Tel: (604) 244-0678, Fax: (604) 270-3644
Germany
Berlin
Tel: (+49) 30-435-9000, Fax: (+49) 30-435-70650
Freising
Tel: (+49) 8161-62-002, Fax: (+49) 8161-68-374
Lothar Bahn
The Netherlands
Schiphol
Tel: (+31) 20-654-0111, Fax: (+31) 20-654-0270
Italy
Milano
Tel: (+39) 2-38093-444, Fax: (+39) 2-38093-448
England
Abingdon, Oxon
Tel: (+1) 44-865-390001, Fax: (+1) 44-865-390002
France
Les Ulis
Tel: (+33) 1-69-28-16-17, Fax: (+33) 1-69-28-37-49
Hong Kong
Kowloon
Tel: (+852) 2-393-0101, Fax: (+852) 2-397-7979
Wanchai
Tel: (+852) 2-529-4111, Fax: (+852) 2-529-7661
Singapore
Tel: (+65) 383-3832, Fax: (+65) 383-3830
Japan
Shinagawa-ku, Tokyo
Tel: (+81) 3-3443-5640, Fax: (+81) 3-3443-2443
Yodogawa-ku, Osaka
Tel: (+81) 6-391-6310, Fax: (+81) 6-391-6325
Fujisawa-shi, Kanagawa
Tel: (+81) 466-88-8510, Fax: (+81) 466-88-8515
Machida-shi, Tokyo
Tel: (+81) 427-21-8141, Fax: (+81) 427-21-8848
Nagoya-shi, Aichi
Tel: (+81) 52-223-3791, Fax: (+81) 52-223-3736
69
Appendix H
Index
A
accessories 54
adapters
AT-ADAPT-2 54, 59
harmonica 61
harmonica-style 54
octopus 54
Telco 50-pin/RJ45 61
Application-Specific Integrated Circuit (ASIC) 2
appliqué port 2
ASYNC ASCII terminal port 2
AT-3608
on line 34
receive 34
Attachment Unit Interface (AUI) 2, 4, 59
AUI drop cables 56
B
baseband coaxial system 59
Bayonet Nut Couple (BNC) 3
bit rate 60
bit time 60
Boot Protocol (BootP) 6
Bulletin Board System (BBS) 6
C
cable color 52
Cable colors 52, 53
cabling
10BASE2 2, 3, 11, 17, 33, 55, 59, 60
10BASE5 2, 55, 56, 59
10BASE-FL 3, 11, 17, 21, 25, 56, 59
10BASE-T 2, 3, 11, 12, 17, 19, 35, 37, 40, 41, 42, 44, 45,
46, 47, 48, 49, 54, 55, 59, 60
cross-over 44, 49, 55, 60
data-grade 19
fiber optic length 22, 28
fiber segment length 22, 27
FOIRL 3, 25, 56, 61
impedance 59, 61
point-to-point 55
silver satin 19
straight-through 44, 48, 55, 63
UTP 37, 39, 40, 42, 43, 47, 49, 55
voice-grade 19
carrier sense 60
Carrier Sense Multiple Access with Collision Detection
(CSMA/CD) 3, 60
chassis
department concentrator 1, 3, 7, 11
desktop 1, 3, 7
rackmount 1, 3
coax segment 60
coaxial cable 60
coaxial cable segment 60
compatibility interface 60
compliance
IEEE 802.3 1, 2, 3, 56, 57, 59, 60
configuration
managed hub 7
standalone 7, 63
connectivity 3
AT-3606F 21, 25
AT-3606F/SMA 21
AT-3608 31
AT-3612T 35
AT-3612TR 39
AT-3624T 41
AT-3624TR 43
connectors
50 pin Telco 51
50-pin Telco 35, 54, 59, 61
bayonet nut couple connector 60
BNC 11, 31
BNC-T 32, 33
DIX 61
D-sub 60
N-series 62
RJ21 3, 11, 41
RJ45 3, 11, 39, 43, 44, 48, 59, 61, 63
SMA 13, 14, 15, 16, 17, 21, 22, 23, 25, 28, 29
ST 11, 17, 21, 22, 25, 28
71
Index
Telco 50-pin 3, 35, 41
UTP 41, 46
cover panels
AT-3606F 21, 26, 27
AT-3608 31, 32
AT-3612T 35, 41
AT-3612TR 2, 13, 39, 43
cross-over UTP wiring 49
D
Data Communication Equipment (DCE) 60
Data Terminal Equipment (DTE) 59, 60
DB9 11
department concentrator 59, 60
diagnostics
LEDs 2
E
EIA standard 11
Ethernet 59
F
fiber optic 56, 59
Fiber Optic Inter-Repeater Link (FOIRL) 2
firmware cassette
AT-S4 6
firmware cassette slot 17
four repeater rule 55
G
glossary 59
H
harmonica adapter 61
hot swapping 10, 61
hub 1, 19, 52
activity 36
collision 36
fault 36
master 36
power 36
Hub MIB 1
hub/repeater 61
hybrid cable 22, 28
I
IEEE 802.3 propagation specification 57
indicator
collision 60
heartbeat 61
link 8
link test 61
indicators 24, 30, 34, 36, 37, 40, 42, 46
activity 8, 10
AT-3608 34
fault 18
hub status 18, 36
link 10, 19, 22, 28
master 18
port 18, 23, 29, 37, 40, 41, 45
power 8, 10, 18
72
installation
hardware 7
power 7
ventilation 7
interrepeater bus connector 17
J
jabber lock-up 61
jam 61
jitter 61
L
LAN 60
LEDs
diagnostic 2
hub 18
link segment 61
M
manageable hub/repeater 1
managed module 62
management
RS232 11
SNMP 2
management agent 62, 63
OMEGA 2, 11
Management Information Base (MIB) 1
management software
upgrades 6
Master 36
MAU/transceiver 62
MDI/MDI-X 62
MDI/MDI-X Switch 44
MDI-X 44
Medium Attachment Unit (MAU) 48, 49, 55, 62
Medium Dependent Interface (MDI) 44, 62
micro transceivers
AT-210T 17
AT-MX10 17
AT-MX25F 17
AT-MX26F 17
module 62
backup 59
master 62
slave 63
modules
AT-3606 4
AT-3606F 3, 21, 22, 25, 27
AT-3606F/SMA 4, 21
AT-3608 3, 4, 5, 8
AT-3612T 3, 4, 35, 37, 51, 54
AT-3612TR 3, 4, 39, 40
AT-3624T 4, 41, 51, 54
AT-3624TR 3, 4, 43, 44, 45
AT-3624TRS 1, 5
AT-3624TS 5
backup 4, 18, 36
hot swapping 2
master 4, 18, 36
slave 1, 4
slaves 4
Index
N
Network Interface Controller (NIC) 48
network management 5
O
OMEGA 5
P
patch panel 54, 62
polarity correction 62
port
collision 30, 37, 42, 46
link 37, 40, 42, 46
no link 37, 40, 42, 46
on line 24, 30
partitioned 30, 37, 42, 46
receive 24, 30
receiving 37, 40, 42, 46
ports
appliqué 2
AUI 11
network 11
RS232 terminal 11
power supply
export 13
U.S.A. 13
propagation delay 56, 62
punch-down block 52, 63
R
receiving
receiving pin (RD) 56
repeater 59, 62, 63
Repeater MIB 1
repeater software
upgrading from cassette 2
upgrading from download 2, 6
RJ45 connectors 3
RS232 DB25 11
RS232 terminal port 13
rubber feet 9
S
Signal Quality Error (SQE) 63
silver satin 54
73
Simple Network Management Protocol (SNMP) 1, 6, 63
management 2
SQE test 63
status indicators 17
Straight Tip (ST) 3, 25
straight-through UTP wiring 48
Sub Miniature Assembly (SMA) 3
T
TCP/IP protocols 63
Telco connector 64
termination 56
terminator switch 34
off 34
on 34
transceiver
appliqué 11
transmitting
transmitting pin (TD) 56
Trivial File Transfer Protocol (TFTP) 6
U
unmanaged module 64
Unshielded Twisted Pair (UTP) 2, 64
upgrading repeater software 6
UTP 19, 59
UTP specification 55
W
wiring 2, 3, 11, 12, 17, 19, 21, 22, 25, 27, 28, 33, 35, 37, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 54, 55, 56, 59, 60, 61,
63
10BASE2 termination 33
cross-over UTP 49
house wiring 61
hub-to-hub 61
hub-to-MAU 61
hub-to-MAU UTP 48
MAU-to-MAU UTP 49
MAU-to-MAU UTP, hub-to-hub 62
rules 17
straight-through UTP 48
thick Ethernet 64
thin Ethernet 64
trunk cable 64
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