Allied Telesyn International Corp AT-4016TR User manual

Allied
Telesyn
International
CentreCOM
AT-3004SL
AT-3008SL
Multiport
Repeaters
User Manual
 Copyright 1994 Allied Telesyn International, Corp.
All rights reserved. No part of this publication may be reproduced without prior written permission from
Allied Telesyn International, Corp.
Allied Telesyn International, Corp. 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, Corp. 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, Corp. has been advised of, known, or should have known, the possibility of such damages.
Trademarks: CentreCOM is a registered trademark of Allied Telesyn International, Corp. 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.
Table of Contents
Table of Contents
................................................................................................................................ iii
Electrical Safety and Installation Requirements ............................................................. v
Chapter 1
Overview ....................................................................................................................................................1
CentreCOM Multiport Repeaters ..................................................................................................................1
AT-3004SL 4 Port with One AUI
AT-3008SL 8 Port with One AUI ..................................................................................................................1
Features ......................................................................................................................................................2
Chapter 2
Installation ................................................................................................................................................3
Connections .......................................................................................................................................................3
Power ...........................................................................................................................................................3
AUI Port .....................................................................................................................................................3
BNC Ports ..................................................................................................................................................4
Ventilation ..................................................................................................................................................4
Chapter 3
Operation ...................................................................................................................................................5
Status Indicators ........................................................................................................................................5
Segmentation
(Partitioning) .....................................................................................................................................................6
System Check .............................................................................................................................................6
Chapter 4
Troubleshooting .....................................................................................................................................7
Chapter 5
Configuration
..........................................................................................................................................9
Appendix A
Data Cabling Techniques ...............................................................................................................11
10BASE-T .......................................................................................................................................................11
UTP Hub-to-MAU
Wiring ............................................................................................................................................. 12
UTP MAU-to-MAU,
Hub-to-Hub Wiring ........................................................................................................................ 13
MDI/MDI-X
Switch ...............................................................................................................................................................13
iii
Table of Contents
Appendix B
Glossary .................................................................................................................................................... 17
Appendix C
CentreCOM AT-3004SL/AT-3008SL Manual Feedback ................................................. 25
Appendix D
Technical Support Fax Order ..................................................................................................... 27
Incident Summary ......................................................................................................................................... 27
iv
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 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 by the manufacturer or the FCC, can void your right to operate this equipment.
Electrical Safety and Installation
Requirements
Canadian Department of Communications
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the radio interference
regulations of the Canadian Department of Communications.
Le présent appariel numérique n'émet pas de bruits radioélectriques dépassant les limites appicables aux appariels numériques de Classe A.
Prescrites dans le réglement sur le brouillage radioélectrique édicté par le minestére des Communications Du Canada.
This product has been tested and complies with the German Vfg 243/1991 requirements for Class B device.
Warning
Caution
!
SAFETY
ELECTRICAL NOTICES
ELECTRIC SHOCK HAZARD
To prevent ELECTRIC shock, do not remove cover. No user-serviceable parts inside. This unit contains HAZARDOUS VOLTAGES and
should only be opened by a trained and qualified technician.
To avoid the possibility of ELECTRIC SHOCK, disconnect electric power to the product before connecting or disconnecting the LAN
cables.
LIGHTNING DANGER
DANGER: DO NOT WORK on equipment or CABLES during periods of LIGHTNING ACTIVITY.
POWER CORD IS USED AS A DISCONNECTION DEVICE.
TO DE-ENERGISE EQUIPMENT, disconnect the power cord.
INSTALLATION
ELECTRICAL—AUTO VOLTAGE ADJUSTMENT
This product will automatically adjust to any voltage between the ranges shown on the label.
ELECTRICAL—TYPE CLASS 1 EQUIPMENT
THIS EQUIPMENT MUST BE EARTHED. Power plug must be connected to a properly wired earth ground socket outlet. An improperly
wired socket outlet could place hazardous voltages on accessible metal parts.
ELECTRICAL—CORD NOTICE
Use power cord, maximum 4.5 meters long, rated 6 amp minimum, 250V, made of HAR cordage molded IEC 320 connector on one end and
on the other end a plug approved by the country of end use.
Caution
!
MOUNTING INSTRUCTIONS
These models are designed for operation in the HORIZONTAL position. VERTICAL MOUNTING must not be done without the use of an
Allied Telesis vertical mount chassis designed for this purpose.
Air vents must not be blocked and must have free access to the room ambient air for cooling.
DO NOT detach rubber feet from the product unless an Allied Telesis vertical mounting chassis is being used.
OPERATING TEMPERATURE
This product is designed for a maximum ambient temperature of 50 degrees Celsius.
ALL COUNTRIES: Install product in accordance with local and National Electrical Codes.
STRAHLUNGSENERGIE
BESCHEINIGUNG DES HERSTELLERS/IMPORTEURS
Hiermit wird bescheinigt, daß das Multiport Repeater. Typenbezeichnung AT-3004SL/AT-3008SL in Ubereinstimmung mit den
Bestimmungen der BAPT-AmtsblVfg 243/1991 Klasse B funk-entstört ist. Der vorschriftsmäßige Betrieb mancher Geräte ( z. B
MeBsender) kann allerdings gewissen Einschränkungen unterliegen. Beachten Sie deshalb die Hinweise in der Bedienungsanleitung.
Dem Zentralamt fur Zulassungen im Fermeldewesen wurde das Inverkehrbringen dieses Gerätes angezeigt und die Berechtigung zur
Überprufung der Serie auf Eienhaltung der Bestimmungen eingeräumt.
Von Benutzer zusammengestellte Systeme, die dieses Gerat beihhhalten, müssen den Betimmungen von Vfg 243/1991 Klasse B,
entsprechen.
Achtung
SICHERHEIT
ACHTUNG: GEFÄHRLICHE SPANNUNG
Das Gehäuse nicht öffnen. Das Gerät enthält keine vom Benutzer wartbaren Teile. Das Gerät steht unter Hochspannung und darf nur von
qualifiziertem technischem Personal geöffnet werden. Vor Anschluß der LAN-Kabel, Gerät vom Netz trennen.
GEFAHR DURCH BLITZSCHLAG
GEFAHR: Keine Arbeiten am Gerät oder an den Kabeln während eines Gewitters ausführen
Vorsicht
!
VORSICHT: DAS NETZKABEL DIENT ZUM TRENNEN DER
STROMVERSORGUNG. ZUR TRENNUNG VOM NETZ, KABEL AUS DER
VORSICHT STECKDOSE ZIEHEN.
INSTALLATION
AUTOMATISCHE SPANNUNGSEINSTELLUNG
Dieses Gerät stellt sich automatisch auf die auf dem Etikett aufgeführten Spannungswerte ein.
KLASSE 1 GERÄTE
DIESE GERÄTE MÜSSEN GEERDET SEIN. Der Netzstecker darf nur mit einer vorschriftsmäßig geerdeten Steckdose verbunden
werden. Ein unvorschriftsmäßiger Anschluß kann das Metallgehäuse Teile unter gefährliche elektrische Spannungen setzen.
NETZKABEL
Das Netzkabel sollte eine maximale Länge von 4,5 Metern, einen Nennwert von mindestens 6 A und 250 V haben, aus HAR-Material
hergestellt und mit einer gepreßten, IEC 320 entsprechenden, Anschlußverbindung an einem Ende, und am anderen Ende mit einem im
Land des Endverbrauchers geprüften Stecker ausgestattet sein.
v
Vorsicht
!
MONTAGEANWEISUNGEN
VORSICHT: Diese Modelle sind für Betrieb in horizontaler Position entworfen worden. Das Gerät darf NICHT OHNE Gebrauch eines
dafür entworfenen Allied Telesis-Vertikalmontagegestells in VERTIKALER Position montiert werden.
VORSICHT: Die Entlüftungsöffnungen dürfen nicht versperrt sein und müssen zum Kühlen freien Zugang zur Raumluft haben.
VORSICHT: Die Gummifüße NICHT ENTFERNEN, außer bei Gebrauch des Allied Telesis-Vertikalmontagegestells.
BETRIEBSTEMPERATUR
Dieses Produkt wurde für den Betrieb in einer Umgebungstemperatur von nicht mehr als 50˚ C entworfen.
ALLE LÄNDER: Installation muß örtlichen und nationalen elektrischen Vorschriften entsprechen.
STRÅLINGSENERGI
Dette kommercielle produkt opfylder de krav, der i USA stilles til udstyr af Klasse A.
Dette produkt opfylder krav, der ifølge German Vfg 243/1991 stilles til udstyr af Klasse B.
Advarsel
SIKKERHED
ELEKTRISKE FORHOLDSREGLER
ADVARSEL: RISIKO FOR ELEKTRISK STØD
For at forebygge ELEKTRISK stød, undlad at åbne apparatet. Der er ingen indre dele, der kan repareres af brugeren. Denne enhed
indeholder LIVSFARLIGE STRØMSPÆNDINGER og bør kun åbnes af en uddannet og kvalificeret tekniker. For at undgå risiko for
ELEKTRISK STØD, afbrydes den elektriske strøm til produktet, før LAN-kablerne monteres eller afmonteres.
Advarsel
FARE UNDER UVEJR
FARE: UNDLAD at arbejde på udstyr eller KABLER i perioder med LYNAKTIVITET.
!
ADVARSEL: DEN STRØMFØRENDE LEDNING BRUGES TIL AT AFBRYDE STRØMMEN. SKAL STRØMMEN TIL
APPARATET AFBRYDES, tages ledningen ud af stikket.
INSTALLATION
ELEKTRISK—AUTOMATISK SPÆNDINGSREGULERING
Dette apparat vil automatisk tilpasse sig enhver spænding indenfor de værdier, der er angivet på etiketten.
ELEKTRISK—KLASSE 1-UDSTYR
DETTE UDSTYR KRÆVER JORDFORBINDELSE. Stikket skal være forbundet med en korrekt installeret jordforbunden stikkontakt.
En ukorrekt installeret stikkontakt kan sætte livsfarlig spænding til tilgængelige metaldele.
ELEKTRISK—LEDNING
Anvend ledning af maksimum 4,5 meters længde, med en kapacitet på minimum 6 amp., 250 v, bestående af en IEC 320 connector med
indstøbt HAR ledning i den ene ende og et stik i den anden ende godkendt der er af myndighederne i brugerlandet.
Advarsel
!
INSTRUKTIONER FOR OPSTILLING
ADVARSEL: Disse modeller er konstrueret til at betjenes i HORISONTAL position (vandret). VERTIKAL OPSTILLING (lodret) må
IKKE FORETAGES uden brug af et Allied Telesis vertikalt monteringsstel konstrueret til dette formål.
ADVARSEL: Ventilationsåbninger må ikke blokeres og skal have fri adgang til den omgivende luft i rummet for afkøling.
ADVARSEL: UNDLAD at fjerne gummisoklerne fra apparatet, med mindre der anvendes et Allied Telesis vertikalt monteringsstel.
BETJENINGSTEMPERATUR
Dette apparat er konstrueret til en omgivende temperatur på maksimum 50 grader C.
ALLE LANDE: Installation af produktet skal ske i overensstemmelse med lokal og national lovgivning for elektriske installationer.
STRALINGSENERGIE
Dit handelsprodukt werd getest en voldoet aan de Amerikaanse vereisten voor een klasse A toestel.
Dit produkt werd getest en voldoet aan de Duitse Vfg 243/1991 vereisten voor een klasse B toestel.
VEILIGHEID
Waarschuwingen WAARSCHUWINGEN MET BETREKKING TOT ELEKTRICITEIT
WAARSCHUWING: GEVAAR VOOR ELEKTRISCHE SCHOKKEN
Gelieve het deksel niet te verwijderen, teneinde ELEKTRISCHE schokken te voorkomen. Binnenin bevinden zich geen onderdelen die
door de gebruiker kunnen worden onderhouden. Dit toestel staat onder GEVAARLIJKE SPANNING en mag alleen worden geopend door
een daartoe opgeleide en bevoegde technicus. Om het gevaar op ELEKTRISCHE SCHOKKEN te vermijden, moet u het toestel van de
stroombron ontkoppelen alvorens de LAN-kabels te koppelen of ontkoppelen.
GEVAAR VOOR BLIKSEMINSLAG
Waarschuwingen GEVAAR: NIET aan toestellen of KABELS WERKEN bij BLIKSEM.
!
WAARSCHUWING: HET TOESTEL WORDT UITGESCHAKELD DOOR DE STROOMKABEL TE ONTKOPPELEN.
OM HET TOESTEL STROOMLOOS TE MAKEN: de stroomkabel ontkoppelen.
INSTALLATIE
ELEKTRISCH—AUTOMATISCHE AANPASSING VAN DE SPANNING
Dit toestel past zich automatisch aan elke spanning aan, tussen de waarden op het label vermeld.
ELEKTRISCHE—TOESTELLEN VAN KLASSE 1
DIT TOESTEL MOET GEAARD WORDEN. De stekker moet aangesloten zijn op een juist geaarde contactdoos. Een onjuist geaarde
contactdoos kan de metalen onderdelen waarmee de gebruiker eventueel in aanraking komt onder gevaarlijke spanning stellen.
ELEKTRISCHE—SNOEREN
Gebruik een elektrisch snoer, maximum 4,5 meter lang, berekend voor ten minste 6 ampère, 250 V, uit HAR vervaardigd, met aan het ene
uiteinde een gevormde IEC 320 stekker en aan het andere uiteinde een stekker die goedgekeurd is door het land waar het toestel zal worden
gebruikt.
MONTAGE-INSTRUCTIES
Waarschuwingen WAARSCHUWING: Deze modellen zijn ontworpen om te werken in HORIZONTALE stand.
VERTICALE MONTAGE mag NIET UITGEVOERD WORDEN, tenzij een daartoe speciaal ontworpen Allied Telesis chassis voor
verticale montage wordt gebruikt.
!
vi
WAARSCHUWING: De ventilatiegaten mogen niet worden gesperd en moeten de omgevingslucht ongehinderd toelaten voor afkoeling.
WAARSCHUWING: De rubberen voetjes NIET van het produkt LOSMAKEN behalve wanneer een chassis voor vertikale montage van
Allied Telesis wordt gebruikt.
BEDRIJFSTEMPERATUUR
De omgevingstemperatuur voor dit produkt mag niet meer bedragen dan 50 graden Celsius.
ALLE LANDEN: het toestel installeren overeenkomstig de lokale en nationale elektrische voorschriften.
ENERGIE RAYONNEE
Ce matériel a été testé et est certifié conforme par la réglementation américaine aux normes définies pour les appareils de classe A.
Ce matériel a été testé et est certifié conforme par la réglementation allemande Vfg 243/1991 aux normes définies pour les appareils de
classe B.
Avertissement
Danger
!
SECURITE
INFORMATION SUR L’ELECTRICITE
AVERTISSEMENT: DANGER D’ELECTROCUTION
Pour empêcher les dangers d’ELECTROCUTION, ne pas enlever le couvercle. L’équipement ne contient aucun élément réparable par
l’utilisateur. Cet appareil comprend des TENSIONS DANGEREUSES et ne doit être ouvert que par un technicien dûment qualifié. Pour
éviter tout risque d’ELECTROCUTION, débrancher l’appareil de la prise de courant avant de connecter ou de déconnecter les câbles LAN.
DANGER DE FOUDRE
DANGER: NE PAS MANIER l’équipement ou les CABLES pendant les périodes d’activité orageuse.
ATTENTION: LE CORDON D’ALIMENTATION SERT DE MISE HORS CIRCUIT
POUR COUPER L’ALIMENTATION DE L’APPAREIL, débranchez le cordon.
INSTALLATION
ELECTRICITE—REGLAGE DE TENSION AUTOMATIQUE
Ce produit peut s’ajuster automatiquement sur n’importe quelle tension comprise dans la plage indiquée sur le label.
ELECTRICITE—EQUIPEMENT DE CLASSE 1
CET APPAREIL DOIT ETRE MIS A LA TERRE. La prise de courant doit être branchée dans une prise femelle correctement mise à la
terre. Sinon, des tensions dangereuses risqueraient d’atteindre les pièces métalliques accessibles à l’utilisateur.
ELECTRICITE—INFORMATION SUR LE CORDON
Utiliser un cordon secteur de 4,5 mètres de long maximum, calibré à 6 ampères minimum, 250V, et fabriqué en câblage HAR avec connecteur
IEC 32C moulé à une extrémité et à l’autre extrémité, une prise de courant mâle répondant aux normes du pays d’utilisation.
Attention
INSTRUCTIONS DE MONTAGE
ATTENTION: Ces modèles sont destiné à fonctionner en position horizontale. L’appareil NE DOIT PAS être utilisé en MONTAGE
VERTICAL sans employer un châssis de montage vertical Allied Telesis conçu à cet effet.
!
ATTENTION: Ne pas bloquer les fentes d’aération, ce qui empêcherait l’air ambiant de circuler librement pour le refroidissement.
ATTENTION: NE PAS ôter les pattes d’attache en caoutchouc du produit, à moins d’utiliser un châssis de montage vertical Allied Telesis.
TEMPERATURE DE FONCTIONNEMENT
Ce produit est capable de tolérer une température ambiante maximum de 50 degrés Celsius
POUR TOUS PAYS: Installer le produit conformément aux normes électriques nationales et locales.
SÄTEILYENERGIA
Tämä kaupallinen tuote on testattu ja noudattaa Yhdysvaltojen vaatimuksia luokan A laitteelle.
Tämä kaupallinen tuote on testattu ja noudattaa Saksan Vfg 243/1991 -vaatimuksia luokan B laitteelle.
Varoitus
Hengenvaara
!
TURVALLISUUS
SÄHKÖÖN LIITTYVIÄ HUOMAUTUKSIA
VAROITUS: SÄHKÖISKUVAARA
Estääksesi SÄHKÖISKUN älä poista kantta. Sisällä ei ole käyttäjän huollettavissa olevia osia. Tämä laite sisältää VAARALLISIA
JÄNNITTEITÄ ja sen voi avata vain koulutettu ja pätevä teknikko. Välttääksesi SÄHKÖISKUN mahdollisuuden katkaise sähkövirta
tuotteeseen ennen kuin liität tai irrotat paikallisverkon (LAN) kaapelit.
SALAMANISKUVAARA
HENGENVAARA: ÄLÄ TYÖSKENTELE laitteiden tai KAAPELEIDEN KANSSA SALAMOINNIN AIKANA.
HUOMAUTUS: VIRTAJOHTOA KÄYTETÄÄN VIRRANKATKAISULAITTEENA. VIRTA KATKAISTAAN irrottamalla virtajohto.
ASENNUS
SÄHKÖ —AUTOMAATTINEN JÄNNITTEENSÄÄTÖ
Tämä tuote säätää automaattisesti mihin tahansa jännitteeseen ohjetarrassa annettujen arvojen välillä.
SÄHKÖ —TYYPPILUOKAN 1 LAITTEET
TÄMÄ LAITE TÄYTYY MAADOITTAA. Pistoke täytyy liittää kunnollisesti maadoitettuun pistorasiaan. Virheellisesti johdotettu
pistorasia voi altistaa metalliosat vaarallisille jännitteille.
SÄHKÖ —JOHTOON LIITTYVÄ HUOMAUTUS
Käytä seuraavanlaista virtajohtoa: maksimipituus 4,5 metriä, minimiteho 6 ampeeria, 250 V, valmistettu HAR-johdostosta, muovattu IEC
320 -liitin toisessa päässä ja käyttömaassa hyväksytty pistoke toisessa päässä.
Huomautus
ASENNUSSOHJEET
HUOMAUTUS: Nämä mallit on suunniteltu käytettäviksi VAAKA-asennossa. PYSTYASENNUSTA EI SAA TEHDÄ ilman Allied Telesis
-pystykiinnitysalustaa, joka on suunniteltu tähän tarkoitukseen.
!
HUOMAUTUS: Ilmavaihtoreikiä ei pidä tukkia ja niillä täytyy olla vapaa yhteys ympäröivään huoneilmaan, jotta ilmanvaihto tapahtuisi.
HUOMAUTUS: ÄLÄ irroita kumijalkoja tuotteesta, ellei Allied Telesis-pystykiinnitysalusta ole käytössä.
KÄYTTÖLÄMPÖTILA
Tämä tuote on suunniteltu ympäröivän ilman maksimilämpötilalle 50° C.
KAIKKI MAAT: Asenna tuote paikallisten ja kansallisten sähköturvallisuusmääräysten mukaisesti.
vii
ENERGIA IRRADIATA
Questo prodotto commerciale è stato collaudato e risponde ai requisiti U.S.A. per i dispositivi di classe A.
Questo prodotto è stato collaudato e risponde ai requisiti della legge tedesca Vfg 243/1991 per i dispositivi di classe B.
Attenzione
NORME DI SICUREZZA
AVVERTENZE ELETTRICHE
ATTENZIONE: PERICOLO DI SCOSSE ELETTRICHE
Per evitare SCOSSE ELETTRICHE non asportare il coperchio. Le componenti interne non sono riparabili dall’utente. Questa unità ha
TENSIONI PERICOLOSE e va aperta solamente da un tecnico specializzato e qualificato. Per evitare ogni possibilità di SCOSSE
ELETTRICHE, interrompere l’alimentazione del dispositivo prima di collegare o staccare i cavi LAN.
Pericolo
PERICOLO DI FULMINI
PERICOLO: NON LAVORARE sul dispositivo o sui CAVI durante PRECIPITAZIONI TEMPORALESCHE.
!
ATTENZIONE: IL CAVO DI ALIMENTAZIONE È USATO COME DISPOSITIVO DI DISATTIVAZIONE.
PER TOGLIERE LA CORRENTE AL DISPOSITIVO staccare il cavo di alimentazione.
INSTALLAZIONE
ELETTRICITÀ -REGOLAZIONE AUTOMATICA DELLA TENSIONE
Questo prodotto regolerà automaticamente la tensione ad un valore compreso nella gamma indicata sull’etichetta.
ELETTRICITÀ -DISPOSITIVI DI CLASSE 1
QUESTO DISPOSITIVO DEVE AVERE LA MESSA A TERRA. La spina deve essere inserita in una presa di corrente specificamente
dotata di messa a terra. Una presa non cablata in maniera corretta rischia di scaricare una tensione pericolosa su parti metalliche accessibili.
ELETTRICITÀ -AVVERTENZA SUL CAVO
Usare un cavo della lunghezza massima di metri 4,5, con capacità minima di 6 A, 250 V, di filo HAR, dotato di connettore stampato IEC 320
ad un’estremità e di spina approvata dal paese di destinazione all’altra.
Attenzione
!
ISTRUZIONI PER IL MONTAGGIO
ATTENZIONE: questi modelli sono concepiti per il funzionamento in posizione ORIZZONTALE. NON È POSSIBILE EFFETTUARE IL
MONTAGGIO VERTICALE senza utilizzare l’apposito telaio per il montaggio verticale Allied Telesis.
ATTENZIONE: le prese d’aria non vanno ostruite e devono consentire il libero ricircolo dell’aria ambiente per il raffreddamento.
ATTENZIONE: NON staccare il piedino in gomma dal prodotto tranne qualora si utilizzi il telaio Allied Telesis per il montaggio verticale.
TEMPERATURA DI FUNZIONAMENTO
Questo prodotto è concepito per una temperatura ambientale massima di 50 gradi centigradi.
TUTTI I PAESI: installare il prodotto in conformità alle vigenti normative elettriche nazionali.
UTSTRÅLT ENERGI
Dette kommersielle produktet har blitt testet og er i samsvar med amerikanske krav for et A-Klasse apparat.
Dette produktet har blitt testet og er i samsvar med tyske Vfg 243/1991 krav for et B-Klasse apparat.
Advarsel
Fare
!
SIKKERHET
ELEKTRISKE MEDDELELSE
ADVARSEL: FARE FOR ELEKTRISK SJOKK
For å unngå ELEKTRISK sjokk, må dekslet ikke tas av. Det finnes ingen deler som du kan bruke på innsiden. Denne enheten inneholder
FARLIGE SPENNING, og må kun åpnes av en opplært, kvalifisert tekniker. For å unngå muligheten av ELEKTRISK SJOKK, må den
elektriske strømmen til produktet være av når du slår LAN-ledninger av og på.
FARE FOR LYNANTENNELSE
FARE: MÅ IKKE BRUKES på utstyr eller ledninger mens LYN-AKTIVITET er i gang.
FORSIKTIG: STRØMLEDNINGEN BRUKES TIL Å SLÅ APPARATET AV.
HVIS DU VIL DEAKTIVISERE UTSTYRET, må du fjerne strømledningen.
INSTALLASJON
ELEKTRISK — AUTO SPENNINGSTILPASSING
Dette produktet vil automatisk bli tilpasset hvilken som helst strøminnstilling i de områdene som vises på etiketten.
ELEKTRISKE — TYPE 1. KLASSE UTSTYR
DETTE UTSTYRET MÅ JORDES. Strømkontakten må være tilkoplet en korrekt jordet grunnstøpselkontakt. En støpselkontakt som
ikke er jordet på rett måte, kan tilføre farlig spenning til lett tilgjengelige metalldeler.
ELEKTRISKE — MEDDELELSE OM LEDNINGER
Bruk en strømledning av maksimal størrelse 4,5 m i lengde, vurdert for minst av 6 amp, 250V, fremstilt av HAR ledning IEC 320
koplingsstykke på den ene kanten og på den andre kanten en plugg som har blitt godkjent i det landet hvor den siste brukeren befinner seg.
Forsiktig
!
BRUKSANVISNINGER FOR MONTERING
FORSIKTIG: Disse modellene er beregnet til bruk i HORISONTAL stilling.
VERTIKAL MONTERING må IKKE UTFØRES uten bruk av et Allied Telesis vertikal monteringschassis som er spesiallaget til dette
formål.
FORSIKTIG: Luftventilene må ikke blokkeres og må ha fri tilgang til luft med romtemperatur for avkjøling.
FORSIKTIG: Gummiføttene må IKKE fjernes fra produktet med mindre en Allied Telesis vertikal monteringschassis er i bruk.
DRIFTSTEMPERATUR
Dette produktet har blitt fremstilt til bruk med maksimum romtemperatur på 50 grader celsius.
ALLE LAND: Produktet må installeres i samsvar med de lokale og nasjonale elektriske koder.
viii
ENERGIA IRRADIADA
Este produto foi testado e atende aos requisitos para dispositivos comerciais de Classe A nos E.U.A.
Este produto foi testado e atende aos requisitos Vfg 243/1991 para dispositivos de Classe B na Alemanha
Atenção
Perigo
!
SEGURANÇA
AVISOS SOBRE CARACTERÍSTICAS ELÉTRICAS
ATENÇÃO: PERIGO DE CHOQUE ELÉTRICO
Para evitar CHOQUE ELÉTRICO, não retire a tampa. Não contém peças que possam ser consertadas pelo usuário. Este aparelho contém
VOLTAGENS PERIGOSAS e só deve ser aberto por um técnico qualificado e treinado. Para evitar a possibilidade de CHOQUE
ELÉTRICO, desconecte o aparelho da fonte de energia elétrica antes de conectar e desconectar os cabos da LAN.
PERIGO DE CHOQUE CAUSADO POR RAIO
PERIGO: NÃO TRABALHE no equipamento ou nos CABOS durante períodos suscetíveis de QUEDAS DE RAIO.
CUIDADO: O CABO DE ALIMENTAÇÃO É UTILIZADO COMO UM DISPOSITIVO DE DESCONEXÃO.
PARA DESELETRIFICAR O EQUIPAMENTO desconecte o cabo de alimentação.
INSTALAÇÃO
ELÉTRICO - AJUSTE AUTOMÁTICO DE VOLTAGEM
Este produto ajustar-se-á automaticamente a qualquer voltagem que esteja dentro dos limites indicados no rótulo.
ELÉTRICO - EQUIPAMENTOS DO TIPO CLASSE 1
DEVE SER FEITA LIGAÇÃO DE FIO TERRA PARA ESTE EQUIPAMENTO. O plugue deve ser conectado a uma tomada com ligação
de fio terra. Tomadas sem ligação de fio terra podem transmitir voltagens perigosas a peças metálicas expostas.
ELÉTRICO - AVISO SOBRE O CABO DE ALIMENTAÇÃO
Use cabo de alimentação com comprimento máximo de 4,5 metros, com uma capacidade mínima de 6 amp e 250 V, fabricado de material para
cabo HAR com conector moldado IEC 320 em uma extremidade e, na outra extremidade, um plugue aprovado para uso no país em questão .
Cuidado
!
INSTRUÇÕES DE INSTALAÇÃO
CUIDADO: Este modelos foram projetados para funcionar na posição HORIZONTAL.
NÃO DEVE SER EFETUADA INSTALAÇÃO VERTICAL sem o uso de um chassis de montagem vertical Allied Telesis projetado para
este fim específico.
CUIDADO: As entradas de ar não devem ser bloqueadas e devem ter acesso livre ao ar ambiente para arrefecimento adequado do aparelho.
CUIDADO: NÃO RETIRE os calços de borracha do produto a menos que esteja sendo usado um chassis de montagem vertical Allied
Telesis.
TEMPERATURA DE FUNCIONAMENTO
Este produto foi projetado para uma temperatura ambiente máxima de 50 graus centígrados.
TODOS OS PAÍSES: Instale o produto de acordo com as normas federais e locais para instalações elétricas.
ENERGIA RADIADA
Este producto comercial ha sido probado y cumple con las normas requeridas en los EE. UU. para un dispositivo de Clase A.
Este producto ha sido probado y cumple con los requisitos Vfg 243/1991 de Alemania para un dispositivo de Clase B.
Advertencia
SEGURIDAD
AVISOS ELECTRICOS
ADVERTENCIA: PELIGRO DE ELECTROCHOQUE
Para evitar un ELECTROCHOQUE, no quite la tapa. No hay ningún componente en el interior al cual puede prestar servicio el usuario.
Esta unidad contiene VOLTAJES PELIGROSOS y sólo deberá abrirla un técnico entrenado y calificado. Para evitar la posibilidad de
ELECTROCHOQUE desconecte la corriente eléctrica que llega al producto antes de conectar o desconectar los cables LAN.
Peligro
PELIGRO DE RAYOS
PELIGRO: NO REALICE NINGUN TIPO DE TRABAJO O CONEXION en los equipos o en LOS CABLES durante TORMENTAS DE
RAYOS
!
ATENCION: EL CABLE DE ALIMENTACION SE USA COMO UN DISPOSITIVO DE DESCONEXION. PARA DESACTIVAR EL
EQUIPO, desconecte el cable de alimentación.
INSTALACION
ELECTRICO—AUTO-AJUSTE DE TENSION
Este producto se ajustará automáticamente a cualquier tensión entre los valores máximos y mínimos indicados en la etiqueta.
ELECTRICO—EQUIPO DEL TIPO CLASE 1
ESTE EQUIPO TIENE QUE TENER CONEXION A TIERRA. El cable tiene que conectarse a un enchufe con tierra debidamente
instalado. Un enchufe que no está correctamente instalado podría ocasionar tensiones peligrosas en las partes metálicas están expuestas.
ELECTRICO—ADVERTENCIA SOBRE EL CABLE
Use un cable eléctrico con un máximo de 4,5 metros de largo, con una capacidad mínima de 6 amperios, 250 V, hecho de cable HAR, con el
conector moldeado IEC 320 en un extremo y con un enchufe que está aprobado por el país de uso final en el otro.
Attencion
!
INSTRUCCIONES DE MONTAJE
ATENCION: Estos modelos están diseñados para operar en posición HORIZONTAL. NO SE DEBEN MONTAR VERTICALMENTE
sin el uso de un chasis de montaje vertical de Allied Telesis que se ha diseñado para este fin.
ATENCION: Las aberturas para ventilación no deberán bloquearse y deberán tener acceso libre al aire ambiental de la sala para su
enfriamiento.
ATENCION: NO separe las patas de goma del producto a menos que se esté usando un chasis de montaje vertical de Allied Telesis.
TEMPERATURA REQUERIDA PARA LA OPERACIÓN
Este producto está diseñado para una temperatura ambiental máxima de 50 grados C.
PARA TODOS LOS PAÍSES: Monte el producto de acuerdo con los Códigos Eléctricos locales y nacionales.
ix
ENERGIUTSTRÅLNING
Denna handelsprodukt har testats och befunnits vara i enlighet med U.S.A.s krav för klass A utrustning.
Denna produkt har testats och befunnits vara i enlighet med Tysklands Vfg 243/1991 krav för klass B utrustning.
Varning
Fara
!
SÄKERHET
TILLKÄNNAGIVANDEN BETRÄFFANDE ELEKTRICITETSRISK:
RISK FÖR ELEKTRISK STÖT
För att undvika ELEKTRISK stöt, ta ej av locket. Det finns inga delar inuti som behöver underhållas. Denna apparat är under
HÖGSPÄNNING och får endast öppnas av en utbildad kvalificerad tekniker. För att undvika ELEKTRISK STÖT, koppla ifrån produktens
strömanslutning innan LAN-kablarna ansluts eller kopplas ur.
FARA FÖR BLIXTNEDSLAG
FARA: ARBETA EJ på utrustningen eller kablarna vid ÅSKVÄDER.
VARNING: NÄTKABELN ANVÄNDS SOM STRÖMBRYTARE
FÖR ATT KOPPLA FRÅN STRÖMMEN, dra ur nätkabeln.
INSTALLATION
ELEKTRISKT—AUTOMATISK SPÄNNINGSJUSTERING
Denna produkt justeras automatiskt till alla spänningar inom omfånget som indikeras på produktens märkning.
ELEKTRISKT—TYP KLASS 1 UTRUSTNING
DENNA UTRUSTNING MÅSTE VARA JORDAD. Nätkabeln måste vara ansluten till ett ordentligt jordat uttag. Ett felaktigt uttag kan
göra att närliggande metalldelar utsätts för högspänning. Apparaten skall anslutas till jordat uttag, när den ansluts till ett nätverk.
ELEKTRISKT—ANMÄRKNING BETRÄFFANDE KABELN
Använd en kabel med maximum längd 4,5 meter och minimum 6 amp nominal, 250V, av HAR kabelfabrikat med ett specialutformat IEC
320-kontaktdon i ena änden och i den andra en plugg som godkänts i landet där produkten används.
Varning
!
MONTERINGSINSTRUKTIONER
VARNING: Dessa modeller är konstruerade för användning i HORISONTALLÄGE.
VERTIKALMONTERING får EJ UTFÖRAS utan att ett Allied Telesis specialkonstruerat vertikalt monteringschassi används.
VARNING: Luftventilerna får ej blockeras och måste ha fri tillgång till omgivande rumsluft för avsvalning.
VARNING: Ta ej bort gummifötterna från produkten om inte ett Allied Telesis vertikalt monteringschassi används.
DRIFTSTEMPERATUR
Denna produkt är konstruerad för rumstemperatur ej överstigande 50 grader Celsius.
ALLA LÄNDER: Installera produkten i enlighet med lokala och statliga bestämmelser för elektrisk utrustning.
x
Chapter 1
Overview
CentreCOM Multiport Repeaters
AT-3004SL 4 Port with
One AUI
AT-3008SL 8 Port with
One AUI
The CentreCOM Multiport Repeaters are designed to connect up to 8
Ethernet/IEEE 802.3 thin (10BASE2) network segments. In addition to the
thinnet interfaces, a single IEEE 802.3 Attachment Unit Interface (AUI) is
provided for attachment to external transceivers. In this way, these
repeaters allow for connection between the different media (thick or thinnet
coaxial, fiber optic and twisted pair) with the choice of the appropriate
transceiver.
With each BNC equipped interface, a 50 Ω internal cable termination is
provided via an externally accessible switch. This feature enables the thinnet
cable to attach directly to the repeater interface, thus eliminating the need
for a T-connector and terminator.
The AT-3004SL and AT-3008SL provide 4 and 8 BNC interfaces respectively,
and a single IEEE 802.3 AUI, which provides easy attachment to the media.
The CentreCOM Multiport Repeaters provide packet regeneration, which
results in a higher performance network. Packet regeneration includes
regenerating preamble, retiming of the data packets, and extending collision
fragments to ensure collision enforcement.
Fault protection is provided by the CentreCOM Multiport Repeaters in 2
distinct ways. First, each segment will automatically disconnect itself when
32 consecutive collisions occur on the same segment. Second, jabber
protection will automatically insert an idle state (10 µs duration) for packets
over 5 ms, but less than 20 ms in length.
Network diagnostics are provided on the front of the CentreCOM Multiport
Repeaters with three LEDs for each network segment. Packet “Receive” and
“Collision” are displayed, aiding in troubleshooting each segment. Segment
“On Line” is also displayed to aid in fault isolation, which together with a
segmentation switch, provide a manual partitioning capability for each
segment.
1
Overview
Features
❑ IEEE 802.3 compliant, Ethernet Version 1.0 and 2.0 compatible
❑ Connects up to 8 thin (10BASE2) coaxial network segments
❑ Automatic/manual partitioning of network segments
❑ Supports all Ethernet media including fiber optics via an AUI port
❑ Externally accessible terminator switch on BNC ports
❑ Packet regeneration/retiming and jabber lock-up protection
❑ Occupies just one slot in a 19 inch rack
❑ Receive, SQE/COL and On Line LEDs per port
❑ Floating ground on BNC shield allows for daisy chain topology
❑ One year warranty
Figure 1 and Figure 2 show the indicators and ports for the CentreCOM
AT-3004SL and AT-3008SL Multiport Repeaters.
10 BASE2 PORTS
1
TM
CentreCOM
3004SL
2
ON LINE
M
A
N
ON LINE
RECEIVE
A
U
T
O
AUI
PORT
4
ON LINE
RECEIVE
A
U
T
O
M
A
N
IEEE 802.3 10 BASE2 ETHERNET
4 PORT REPEATER
3
ON LINE
RECEIVE
M
A
N
ON LINE
RECEIVE
A
U
T
O
RECEIVE
A
U
T
O
M
A
N
A
U
T
O
M
A
N
SEGMENT
PARTITION
SEGMENT
PARTITION
SEGMENT
PARTITION
SEGMENT
PARTITION
SEGMENT
PARTITION
COLLISION
COLLISION
COLLISION
COLLISION
COLLISION
10 BASE2 PORTS
AUI
PORT
4
ACTIVITY
POWER
POWER
3
2
1
CentreCOM
O
F
F
O
F
F
O
N
O
F
F
O
N
O
F
F
O
N
3004SL
O
N
IEEE 802.3 10 BASE2 ETHERNET
4 PORT REPEATER
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
Figure 1: AT-3004SL Front and
Back Panels
1
TM
CentreCOM
3008SL
2
6
7
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
ON LINE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
A
U
T
O
A
U
T
O
M
A
N
A
U
T
O
M
A
N
A
U
T
O
M
A
N
A
U
T
O
M
A
N
M
A
N
A
U
T
O
M
A
N
A
U
T
O
M
A
N
SEGMENT
PARTITION
SEGMENT
PARTITION
SEGMENT
PARTITION
SEGMENT
PARTITION
SEGMENT
PARTITION
SEGMENT
PARTITION
SEGMENT
PARTITION
COLLISION
COLLISION
COLLISION
COLLISION
COLLISION
COLLISION
COLLISION
COLLISION
COLLISION
6
5
POWER
4
3
2
1
CentreCOM
O
F
F
O
N
O
F
F
O
N
O
F
F
O
N
O
F
F
O
N
O
F
F
O
N
O
F
F
O
N
O
F
F
O
N
O
F
F
O
N
3008SL
IEEE 802.3 10 BASE2 ETHERNET
8 PORT REPEATER
TERMINATOR
Figure 2: AT-3008SL Front and
Back Panels
2
TERMINATOR
TERMINATOR
A
U
T
O
M
A
N
SEGMENT
PARTITION
10 BASE2 PORTS
7
ON LINE
RECEIVE
A
U
T
O
SEGMENT
PARTITION
AUI
PORT
8
AUI
PORT
8
ON LINE
RECEIVE
M
A
N
IEEE 802.3 10 BASE2 ETHERNET
8 PORT REPEATER
10 BASE2 PORTS
4
5
3
ON LINE
RECEIVE
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
ACTIVITY
POWER
Chapter 2
Installation
Connections
Attention Before installing AT-3004SL/AT-3008SL Multiport Repeaters, read the
!
electrical safety and installation requirements starting on page i.
Power
Check your network cabling for proper configuration before installing the
AT-3004SL and AT-3008SL repeaters. Power connections are made at the
back panel. The AT-3004SL and AT-3008SL repeaters have a universal power
supply that will accept either 110 or 220 VAC at 50-60 Hz.
AUI Port
An AUI port is provided for connection to an Ethernet transceiver on a
backbone or a fiber optic transceiver through an Ethernet Version 2.0 or
IEEE 802.3 AUI cable. See Figure 3. The AUI port is fully repeated and has
externally switchable Auto/Off Line modes for segmenting or isolating from
other ports.
AUI
PORT
Figure 3: AUI Network Port
3
Installation
BNC Ports
BNC Connections, 10BASE2. A thin Ethernet coaxial cable may be
plugged directly into the BNC port located on the back panel. See Figure 4.
Next to each of these ports is the 50 Ω termination switch. If the coax is
plugged directly without a BNC-T or external terminator then the
terminator switch for the respective port must be enabled by selecting the
ON position. Each BNC is switched individually.
Figure 4: BNC Connector
BNC-T Connections. The AT-3004SL and AT-3008SL BNC ports have
their own switchable 50 Ω termination located on the back panel next to each
BNC port. See Figure 5. If installing with BNC-T connectors in the center of
a segment then the ports internal termination must be disabled (OFF). The
segments termination should then be placed at each end of that cable
segment.
Figure 5: BNC-T Connector
Note
Ventilation
4
If there is no BNC connection on a BNC port then the internal 50 Ω
termination should be enabled (50 Ω switch to ON position) even if the port is
unused or Off Line. This will ensure a Radio Frequency Interface (RFI) noise
tolerant configuration.
The CentreCOM Multiport Repeater has a ventilation fan and ventilation
holes on the sides of the chassis. Do not restrict the flow of air through these
openings. Doing so may cause over-heating and possible component damage.
Chapter 3
Operation
Status Indicators
The CentreCOM Multiport Repeaters have 3 LED indicators for each port.
These indicators, as shown in Figure 6, provide On Line, Activity and SQE/
COL information.
1
2
3
4
AUI
PORT
ON LINE
ON LINE
10 BASE2 PORTS
ON LINE
ON LINE
ON LINE
RECEIVE
M
A
N
SEGMENT
PARTITION
COLLISION
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
A
U
T
O
ACTIVITY
POWER
COLLISION
Figure 6: Front Status Indicators
On Line—Indicates the port is connected to any other On Line ports. If the
Auto/Manual switch is in the Auto position then the On Line indicator should
be illuminated. If the On Line LED is not illuminated then the segment has
been automatically partitioned. This could be a possible segment failure.
Check for proper termination and segment configuration. If there are any
spare ports available a coaxial swap to another port may identify the problem.
Receive—Indicates that the port is functional and incoming packets are
present. If illuminated, incoming packets from the other ports are available at
the port. Conversely, if extinguished then no receive traffic is present.
Collision—Indicates SQE or a Collision. A flickering LED will indicate
Collisions. Occasional Collisions are common with networks. Excessive
Collisions is an indication of possible segment problems. A constantly
illuminated SQE/COL LED may indicate that a port, cabling, or excessive
traffic problem exists.
Segmentation Switch—A manual partitioning switch. This switch enables
you to manually partition a port. For normal operation, switch needs to be in
the Auto position.
5
Operation
Activity—This LED indicates that the repeater is functional and is
transmitting packets to all ports.
Power—The red LED indicator illuminates when power is applied.
Segmentation
(Partitioning)
During power-up, the CentreCOM Multiport Repeater will automatically
enable the port provided the Auto/Manual switch is in the Auto position and
no problems are detected. If a problem is detected, or if the switch is in the
Manual mode, the port and associated cabling are isolated from the other
ports. All ports may be individually isolated from the others by placing the
Auto/Manual switch into the Manual position. Manual may be considered as
local operation of the segment. The segment could be fully operational and
still isolated from other ports. By partitioning port 1, all remaining BNC
ports, could maintain their connectivity while being isolated from the
backbone cable attached through the AUI port.
System Check
To ensure proper operation
Note
6
1.
Set each port to Manual.
2.
Check the network cabling to ensure it is properly connected and
terminated.
3.
If so, apply the proper power connections.
4.
Enable each port by placing the Auto/Manual switch to Auto. Only enable
(by placing the Auto/Manual switch to Auto) the ports that have cable
segments attached.
For first time installations, it is suggested that each port be brought up and
tested one at a time and that an Ethernet compatible diagnostic tester is used
to validate proper operation. If no diagnostic tester is available, then moderate
traffic between segments will suffice. It is advisable to initially validate each
port even if only a few are required at first. After BNC segments are validated
between each other, enable the AUI port, if attached, and test for traffic
through these port.
Chapter 4
Troubleshooting
If network traffic problems are suspected
1.
If the power LED is not illuminated, check the power connections.
2.
If the CentreCOM Multiport repeater is receiving power, check that
terminations are correct on all BNC ports.
3.
If any ports are disconnected verify that they are switched off line by
ensuring that the Auto/Manual switch is in the Manual position.
4.
If only one segment is non-functional then try another port to determine
if the port or cable segment is at fault.
If the SQE/COL LED is constantly illuminated
1.
Check for a missing (open) or shorted terminator.
Excessive flickering of the SQE/COL LED will indicate too many frame
Collisions on the segment. This may be caused by an overloaded segment or
by a marginal cable or connection.
If no ports are functional and the Power LED is illuminated
1.
Try a known good repeater to test and validate the segment.
2.
Call Technical Support at 1-800-428-4835 or refer to Appendix A for the
faxnumber for the nearest ATI location for further assistance.
7
Chapter 5
Configuration
Figure 7 illustrates connections of the two CentreCOM Multiport Repeaters
together using ATI fiber optic transceivers.
ATI Fiber Optic Transceiver
AT-120
AUI Cable (50 Meters Maximum)
1 KM Fiber Optic Cable
Allied Telesyn
CentreCOM
3004SL
IEEE 802.3 10 BASE2 ETHERNET
4 PORT REPEATER
ATI Fiber Optic Transceiver
10 BASE2 PORTS
1
2
ON LINE
M
A
N
SEGMENT
PARTITION
3
ON LINE
RECEIVE
COLLISION
M
A
N
SEGMENT
PARTITION
COLLISION
ON LINE
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
AUI
PORT
4
ON LINE
RECEIVE
A
U
T
O
ON LINE
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
RECEIVE
A
U
T
O
COLLISION
M
A
N
SEGMENT
PARTITION
A
U
T
O
ACTIVITY
POWER
COLLISION
AT-120
ATI Multiport Repeater
AUI Cable (50 Meters Maximum)
Allied Telesyn
CentreCOM
3004SL
IEEE 802.3 10 BASE2 ETHERNET
4 PORT REPEATER
10 BASE2 PORTS
1
2
M
A
N
SEGMENT
PARTITION
3
M
A
N
SEGMENT
PARTITION
COLLISION
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
AUI
PORT
4
ON LINE
RECEIVE
RECEIVE
RECEIVE
RECEIVE
A
U
T
O
ON LINE
ON LINE
ON LINE
ON LINE
RECEIVE
COLLISION
A
U
T
O
M
A
N
SEGMENT
PARTITION
A
U
T
O
COLLISION
M
A
N
SEGMENT
PARTITION
A
U
T
O
ACTIVITY
POWER
COLLISION
ATI Multiport Repeater
Figure 7: AT-3004SL Multiport
Repeater Configuration
Thick or Thin Ethernet Segments x4
Figure 8 illustrates connection of the CentreCOM Multiport Repeater to a
thick Ethernet backbone supporting 8 thin Ethernet segments.
9
Configuration
50 Ω
ATI Transceiver
50 Ω
Terminator
AT-150
Terminator
Allied Telesyn
M
A
N
SEGMENT
PARTITION
COLLISION
8 PORT REPEATER
Terminator
AT-150
AT-150
29 DTEs Maximum
Figure 8: AT-3008SL Ethernet
Configuration
10
3
M
A
N
SEGMENT
PARTITION
COLLISION
4
ON LINE
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
5
ON LINE
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
6
ON LINE
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
7
ON LINE
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
ON LINE
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
AUI
PORT
8
ON LINE
RECEIVE
A
U
T
O
ON LINE
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
COLLISION
RECEIVE
A
U
T
O
M
A
N
SEGMENT
PARTITION
A
U
T
O
ACTIVITY
POWER
COLLISION
185 Meters Maximum
Thin Ethernet
AT-150
2
ON LINE
RECEIVE
3008SL
IEEE 802.3 10 BASE2 ETHERNET
50 Ω
10 BASE2 PORTS
1
ON LINE
CentreCOM
Appendix A
Data Cabling Techniques
The following sections detail cabling techniques and port specifications for
IEEE 802.3 media. For comprehensive treatment of these topics, refer to the
original IEEE specification.
10BASE-T
UTP links support transmissions up to 100 meters (328 ft.) at 10 Megabit data
rates.
A serious problem exists concerning identification of modular cable. There
are various grades of voice-quality and data-quality cables available. These
can appear to be similar externally, although their high-speed data
transmission characteristics are radically different.
The identification problem is exaggerated by the fact that some suppliers
have sold purportedly data-quality cables manufactured with voice-quality
cabling. If any voice-quality cabling is used in a 10BASE-T network system,
data movement is slow, collision-prone or non-existent. To confuse the issue,
the Link indicator on the interface will usually indicate a valid link in such a
case.
For the foregoing reasons, it is absolutely vital that you use only Level 3, 4 or
5 cabling with 10BASE-T connections. As a rule of thumb, if a cable type is
flat, it is usually untwisted, and will cause problems. If a cable is more or less
round in section, it will typically work.
11
Data Cabling Techniques
Table 1 shows the five common modular cable specifications and their
applicability to 10BASE-T network use.
Table 1: Usable and Unusable Twisted Pair Cable
UTP Hub-to-MAU
Wiring
Figure 9: 10BASE-T UTP
Cabling Hub-to-MAU or NIC
(Straight-Through)
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
10BASE5
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 UTP
100 Ω ± 30 Ω
EIA, TIA
10BASE-T
8-10
YES
The AT-4016TR has 10BASE-T UTP ports with industry-standard RJ45
receptacles. The standard network connection is from a Data
Communications Equipment (DCE) device, such as the repeater, to a DTE
device, such as a workstation Network Interface Controller (NIC). This
configuration uses a straight-through cable (see Figure 9).
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
Per IEEE 802.3 specifications
Figure 10 shows a UTP cable with an RJ45 connector. For a 10BASE-T link
between a hub and a Media Access Unit (MAU) or 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 9 above.
12
Pin 1
Figure 10: RJ45 Cable
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 11.
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
Not Used
Figure 11: Hub-to-Hub or
MAU-to-MAU Wiring
MDI/MDI-X
Switch
Note
8
The AT-4016TR additionally has an MDI/MDI-X pin-out switch that affects
RJ45 Port #1. The RJ45 pin-out straight-through (MDI)/crossover (MDI-X)
switch enables you to use a straight-through cable (see Figure 10 above)
during hub-to-hub connectivity by simply placing the switch in the MDI
position. This eliminates the need for making or obtaining a crossover cable,
as shown in Figure 11.
The interface type that IEEE specifies as standard for an Ethernet switch
such as the AT-4016TR is MDI-X. The straight-through/crossover switch
merely provides convenience to avoid having to obtain an alternate cable in
some applications. If you connect a cable and it does not work, try changing the
MDI switch. The rule of thumb is the total number of crossovers must be odd.
You cannot harm the repeater by having the MDI switch in the wrong
position.
13
Data Cabling Techniques
Table 2 shows which position the straight-through/crossover selection switch
needs to be for the device configuration shown.
Table 2: MDI and MDI-X Switch Settings for Common Connection1
Model
Connected to
MDI
MDI-X
AT-4016TR
Hub
X
AT-4016TR
RJ45 Transceiver
X
AT-4016TR
NIC
X
1. This table assumes a straight-through cable is being used. The switch setting are the opposite of what is
shown if a crossover cable is being used.
In both the crossover and straight-through instances, the wire is twisted pair.
Figure 12 demonstrates usable and unusable cable configurations for the
straight-through wire pairing in the UTP environment.
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+
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
1
B
This cable will not work for 10BASE-T.
Note that 3 and 6 are twisted, but are not a pair.
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
Figure 12: Hub-to-MAU Wiring
(A) Usable and (B) Unusable
Diagram A is correct because the proper pairs are twisted together.
Diagram B is incorrect because the wires for the receive pair, pins 3 and 6, are
not twisted together. This could result in excessive common mode noise and
an unacceptably high data error rate.
14
If you pair pins incorrectly, for example as shown in Figure 12, Diagram B,
your network may have a high data error rate. In a straight-through cable,
the transmit pins, 1 and 2, are paired, as are the receive pins, 3 and 6. In a
crossover cable (Figure 11), pins 1 and 2, TD+ and TD-, are paired, as are pins
3 and 6, RD+ and RD-. When pins 1 and 2 are crossed over, they connect to
pins 3 and 6 respectively, and pins 3 and 6, when crossed over, connect to pins
1 and 2 respectively.
15
Appendix B
Glossary
10BASE2—Also called thinnet or CheaperNet, 10BASE2 is a 10 MHz,
baseband, 185 meters (606 ft.) maximum coaxial segment. Cable impedance is
50 Ω.
10BASE5—Also called thick Ethernet, 10BASE5 is a 10 MHz, baseband, 500
meters (1639 ft.) maximum coaxial segment. The cable is commonly referred
to as yellow cable. Cable impedance is 50 Ω. Thick Ethernet cable is typically
used as a trunk or backbone path of the network.
10BASE-T—IEEE 802.3 UTP Ethernet. Using low cost Level 3 or better
UTP wiring, 100 meters (328 ft.) of point-to-point link segments are possible.
Uses RJ45 connectors and sometimes 50-pin AMP connectors to a patch
panel.
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 later broken out for connection to a punchdown block inside a building’s wiring closet. 50-pin Telco connections provide
a very clean, uncluttered interface to the building’s wiring.
ATTACHMENT UNIT INTERFACE (AUI)—This is the cable connection
from a MAU (transceiver) to a DTE (typically a workstation) consisting of a
15 conductor twisted pair cable of 50 meters (164 ft.) maximum length.
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.
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)—This is the rate of data throughput on the medium in bits
per second. Ethernet specifies 10 million bits per second.
BRANCH CABLE—The AUI cable interconnecting the DTE and MAU
system components also known as a Drop cable.
17
Glossary
BIT TIME—The duration of one bit symbol (1/BR). Ethernet specifies a bit
time of 100 ns.
COAX SEGMENT—A segment of Ethernet cable that contains MAU.
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, and provides for a level of
error detection should that transmission be corrupted or impeded by
contention for the transmission medium.
CARRIER SENSE—In a LAN, an ongoing activity of a data station to
detect whether another station is transmitting.
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, and terminated at each end in its characteristic
impedance.
COLLISION—An unwanted condition that results from concurrent
transmissions on the physical medium.
COLLISION PRESENCE—A signal provided by the PLS to the PMA
sublayer (within the physical layer) to indicate that multiple stations are
contending for access to the transmission 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.
CROSS-OVER—Wiring is 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 would have 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 with no receiver. Therefore, the cross-over cable
crosses the TD pair with the RD pair of UTP cable connecting 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 RS232
specification a unit, such as a modem, for connecting a DTE to other
equipment. A repeater connected to a terminal or workstation for OMEGA
LOCAL management use is wired as a DCE.
DATA TERMINAL EQUIPMENT (DTE)—In RS232 specification a unit
typically at the end of a segment. The DTE could be an Ethernet workstation,
repeater, or bridge.
18
DEPARTMENT CONCENTRATOR—Hub which provides a large
number of workstation connections. In this manual the term department
concentrator refers to multiple repeaters housed in an AT-36C8 chassis.
See Hub/Repeater, Repeater.
DIX CONNECTOR—See D-Sub Connector
HARMONICA ADAPTER—This adapter provides a simple way to convert
the 50-pin Telco connection to RJ45 connections.
HEARTBEAT—See SQE
HUB to HUB WIRING—See Hub to MAU Wiring
HUB to MAU WIRING—UTP cables for 10BASE-T hub-to-MAU or
Network Interface Controller (NIC) cards are wired straight-through. An
RJ45 receptacle at the hub would wire pin to pin to the RJ45 receptacle at the
MAU.
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.
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 is tested with a 10BASE-T signal/wire tester.
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 length
exceeds 150 ms duration. This 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 MAU onto the transmission medium if the transmit data time
length exceeds 150 µs duration. This protects the medium from being overrun
with data packets from a possibly defective device.
JITTER—The fluctuation of the data packet 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 which
has no MAU devices but links two LAN devices together 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 and 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).
19
Glossary
MANAGEMENT AGENT—Software that is used to view hub activity and
set hub variables.
MAU—See Medium Attachment Unit
MAU to MAU, HUB to HUB WIRING—10BASE-T MAU to MAU or hub
to hub wiring generally requires a cross-over 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 devices.
MDI—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 the trunk cable medium and the MAU.
N-SERIES—A barrel shaped, threaded connector used on 10BASE5 (thick
Ethernet) coaxial cable.
PATCH PANEL—A 10BASE-T patch panel may be 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 are 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.
PHYSICAL MEDIUM ATTACHMENT (PMA)—The portion of the MAU
that contains the functional circuitry.
PHYSICAL SIGNALING (PLS)—That portion of the physical layer
contained within the DTE that provides the logical and functional coupling
between MAU and data link layers.
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 cross-over 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 maximums for computing
propagation budgets when designing a LAN. Cable length plays a major role
in propagation delay. [i.e, a 50 meters (164 ft.) AUI cable has a maximum
allowable propagation delay of 257 ns.] The propagation delay of cable is
dependent on length and velocity factor of the cable type. There are also
propagation delays associated with electronics attached to the system.
20
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.
They are 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.
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 SQE Test.
THICK ETHERNET—See 10BASE5
THIN ETHERNET—See 10BASE2
TRUNK CABLE—The trunk coaxial cable system.
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 and Level 4 UTP cable generally fits these criteria.
21
Appendix C
CentreCOM AT-3004SL/AT-3008SL
Manual Feedback
Please tell us what additional information you would like to see discussed in
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Hub Management
MIB
Troubleshooting
Reading the LEDs
Telnet Communication
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25
Appendix D
Technical Support Fax Order
Name ___________________________________________________________________
Company ________________________________________________________________
Address _________________________________________________________________
City ____________________State/Province____________ Zip/PostalCode __________
Country _________________ Phone __________________Fax ____________________
Incident Summary
Model number of ATI product I am using ______________________________________
Firmware release number of ATI 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.
Technical Support Fax Numbers:
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France, Belgium, Luxembourg, Holland, Italy, Spain, Australia, New Zealand,
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27