Fast Ethernet Switches ® AT-8118 AT-8124XL AT-8126XL ◆ Installation Guide PN 613-10726-00 Rev C
Copyright 1998-1999 Allied Telesyn International, Corp. 960 Stewart Drive Suite B, Sunnyvale, CA 94086 USA All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn International, Corp. CentreCom is a registered trademark of Allied Telesyn International, Corp. All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.
Radiated Energy Standards: This product meets the following standards U.S. Federal Communications Commission Radiated Energy Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Table of Contents Preface .......................................................................................................................................................................................................Preface-i Purpose of This Guide ............................................................................................................................................................................Preface-i How This Guide is Organized ............................................
Chapter 3 Troubleshooting ...............................................................................................................................................................................................3-1 At the First Sign of a Problem ........................................................................................................................................................................3-1 Network Cabling Problems ...............................................................
Preface Purpose of This Guide This guide is written for network administrators who are responsible for installing and maintaining the AT-8118, AT-8124XL, and AT-8126XL switches. How This Guide is Organized This guide consists of the following sections: Chapter 1, Hardware Description, describes the features and functions of the switches and the media dependent adapters (MDAs).
Preface Appendix C, Switch Default Settings, lists the switch’s default software settings as configured by the factory. Index, at the end of this guide, is according to subject matter. Document Conventions The conventions used in this guide are as follows: ❑ Notes: Note A note provides additional information. ❑ Warnings: Warning A warning indicates that performing or omitting a specific action may result in bodily injury.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Where to Find Related Guides Allied Telesyn wants our customers to be well informed by providing the most up-to-date and most easily accessible way to find our guides and other technical information. Visit our website at: www.alliedtelesyn.
Chapter 1 Hardware Description This chapter describes the hardware features of the following products: " The base switch models: AT-8118, AT-8124XL, and AT-8126XL " The uplink options, also called media dependent adapters (MDAs): AT-A10, AT-A11, AT-A20, and AT-A21 The Base Switch Models The AT-8118, AT-8124XL, and AT-8126XL switches are standalone managed Fast Ethernet switches that provide 16 or 24 10Base-T/ 100Base-TX station ports.
Hardware Description Figure 1-1 shows the AT-8118, a 16-port model with two slots for uplink options Uplink slots (Port A and Port B) 10BASE-T / 100BASE-TX FAST ETHERNET SWITCH MDA 10BASE-T / 100BASE-TX A B 1X 3X 5X 7X 9X PORT ACTIVITY 11X 13X 15X LINK / RS-232 TERMINAL PORT STATUS RECEIVE 100M 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 FAULT A 2X 4X 6X 8X 10X 12X 14X B POWER 16X RESET Figure 1-1 The AT-8118 Switch (Front) Figure 1-2 shows the AT-8124XL, a 24-port
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Hardware Features Table 1-1 summarizes the basic features of each switch model.
Hardware Description " Out-of-band capability with RS232 connector for local switch management " Port-based Virtual LANs (VLANs) " BootP and DHCP support Network Management Features The following lists the switches’ network management features.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Switching Modes Each switch port has the following user-selectable switching modes: " Store-and-forward (default) " Fragment-free cut-through for 100 Mbps ports Network administrators can configure the sending port with the appropriate switching mode to optimize performance and enable full-error checking. The modes reduce network bottlenecks by offering low latency wire rate switching for the port.
Hardware Description Physical Description The switches have the following major front panel components: " 16 or 24 Ethernet 10Base-T/100Base-TX unshielded twisted pair (RJ45) ports " RS232 (DB9-F) connector for out-of-band management (Omega Local) " Reset button " System and port status LEDs " Two slots, Port A and Port B, for optional 100Base-TX or 100Base-FX (SC, MT-RJ or VF-45) backbone connectivity on the AT-8118 or AT-8126XL Refer to Figure 1-4 for the location of front panel components.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Port LEDs Each switch port and uplink port is associated with two LEDs indicating the following: " Valid physical link with a device and packets being received, as indicated by the top row of LEDs " Speed of transmission, 10 Mbps or 100 Mbps, as indicated by the bottom row of LEDs Figure 1-5 is a closeup of the AT-8118’s port LEDs. (The AT-8126XL is similar to the AT-8118. The AT-8124XL does not have Uplink Port LEDs.
Hardware Description System LEDs The switch’s system LEDs are Power and Fault. They indicate the overall operating status of the switch. More details on the LEDs are shown in Table 2-1, Switch LEDs, on page 2-4. AC Power Connector 1-8 The switch has a single power supply in the rear panel, which has autoswitch AC inputs. The input voltage range is from 100-240 VAC, 50/60 Hz.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide The Media Dependent Adapters (MDAs) Allied Telesyn offers optional MDAs, shown in Figure 1-6. You may install any combination of uplink options in Port A or Port B on the AT-8118 or AT-8126XL. Table 1-2 describes the MDAs.
Hardware Description Table 1-2 Media Dependent Adapter Features Adapter Connector Type Description AT-A10 RJ45 " Auto-negotiationg 10Base-T/100Base-TX Fast Ethernet port " Auto-negotiating 10/100 Mbps and duplex mode " Maximum segment length: 330 ft (100 m), Category 5 UTP cable " 100Base-FX Fast Ethernet port " Default transmission speed fixed at 100 Mbps " Multimode SC fiber connector " Auto-negotiating duplex mode (100 Mbps only) " Maximum segment length: 1.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Where to Go Next Proceed to Chapter 2 for details on how to install the switch and the MDAs.
Chapter 2 Installation This chapter describes the following procedures: " Switch installation on the desktop or in the 19-inch rack " MDA installation " Terminal connection for local management and initial setup " Device installation Verifying Your Switch Package Contents Make sure the following hardware components are included in your switch package. If any of the following items are missing or damaged, contact your sales representative.
Installation Safety Information Refer to Appendix A for translated safety statements in your language. Warning 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. !8 Laser Warning Class 1 Laser product.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Preparing the Site Make sure that you follow common sense installation site requirements and observe the following: " Make sure that the switch’s power is accessible and cables can be connected easily. " Cabling must be away from sources of electrical noise such as radios, transmitters, broadband amplifiers, power lines, and fluorescent fixtures. " Air flow around the switch and through its vents on the side and rear cannot be restricted.
Installation Installing the Switch on the Desktop 1. Locate a level, secure surface for the switch. 2. Apply power to the switch as follows: Caution The power cord is used as a disconnect device. To de-energize equipment, disconnect the power cord. ! 10 Attach the power cord to the unit and plug it in the wall outlet. Verify that the Power LED lights green. See Table 2-1. As power is applied to the switch, the Fault LED flashes as the switch runs internal self testing.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Installing the Switch in the Rack Caution Do not use power tools to perform this installation. To rack mount the unit 1. Remove all cables and power cord from the switch (if previously attached). 2. Remove the snap-on plastic feet, as shown in Figure 2-1. Figure 2-1 Removing the Feet Caution Air vents must not be blocked and must have free access to the room ambient air for cooling. ! 13 3.
Installation 4. Mount the switch in the rack using standard screws (not provided). 5. Ensure that there is unrestricted air flow around the switch. 6. Apply power to the unit as follows: Caution Power cord is used as a disconnection device. To de-energise equipment disconnect the power cord. ! 10 Attach the power cord to the unit and plug it in the wall outlet. Verify that the Power LED lights green. See Table 2-1 on page 2-4.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Installing the Media Dependent Adapters (MDAs) If you have the AT-8118 or AT-8126XL switch, you may order and install one of the following MDAs in any combination: " The AT-A10 with the 100Base-TX port " The AT-A11 with the 100Base-FX port (SC) " The AT-A20 wih the 100Base-FX port (MT-RJ) " The AT-A21 with the 100Base-FX port (VF-45) These MDAs are installed in either the Port A or Port B slot on the switch.
Installation 50-pin plug Slot 100AT-A BA 10 SE -T X X Standoff Figure 2-3 Guiding the MDA’s Standoff Into Its Slot 4. Slide the MDA into its empty slot making sure that the standoff is aligned properly. See Figure 2-3. 5. Push the MDA into position so that the front panel contacts the front of the switch’s chassis. See Figure 2-4. 50-pin receptacle PO RT A 100 BA S 100AT-A BA 10 SE -TX E-T X X 2X 10B AS Figure 2-4 Connecting the 50-pin Plug 6.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide 8. Connect the data cable. Verify that the uplink’s LEDs on the switch’s front panel lights green. The LEDs light as described in Table 2-2: Table 2-2 Uplink Port LEDs Uplink Port LED (Port A or B) Link/Receive (port, top row) 100 M (port, bottom row) Color State Description Green On There is a physical link with the device Flashing The port is receiving packets.
Installation Setting Up The Terminal for Local Management Using Omega 1. Connect your terminal to the RS232 connector on the switch’s front panel. Use an RS232, DB-9 straight-through cable. 2. Access your terminal emulation program, i.e., VT100. 3. Set your terminal emulator to the following: — Data bits: 8 — Stop bits: 1 — Parity: None — Baud rate: 9600 4. Press Return. The switch runs diagnostics and shortly displays the Omega main menu.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Connecting Devices to the Switch The switch supports connectivity with DTEs such as workstations and servers, and also DCEs such as hubs, routers, and other switches. The switch supports devices that operate at fixed speeds, 10 Mbps or 100 Mbps, or auto-negotiating, 10/100 Mbps.
Installation Where to Go Next Now that the switch is operational, you are ready to configure and monitor it. Download the AT-S21 Software Management User’s Guide from Allied Telesyn’s website at www.alliedtelesyn.com for the information.
Chapter 3 Troubleshooting This chapter provides information on how to detect and resolve problems with your switch. At the First Sign of a Problem Perform the following tasks when you first become aware of a problem with the switch: " Make sure the power cord is securely connected and the power voltage is not fluctuating. " Check the data cables for secure connections and make sure the device at the other end of a connection is operational. " Press the Reset button so the switch can run self-diagnostics.
Troubleshooting Network Cabling Problems If you have 100Base-TX (Fast Ethernet), some network problems may be related to exceeding cabling distances. Refer to the standard IEEE 802.3U, Clause 29.3.1.2 on Worst Case Path Delay Value. This document specifies that the collision domain diameter must be within the following limits: " Under 330 ft (100 m) for TX cabling " Under 1,331.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Calling Technical Support When contacting Allied Telesyn for support on any of its products, provide Technical Support with the following information: " Model and serial number " Software version number " Description of the problem Refer to Allied Telesyn’s website at www.alliedtelesyn.com for a list of worldwide Allied Telesyn locations.
Troubleshooting How the Switch Reports Problems The switch detects and processes errors as follows: " The LEDs indicate problems with the port and power. Table 3-1 describes the switch LEDs. " In a TCP/IP environment, if you have configured the software correctly, the management software triggers an SNMP trap message. As a result, the software then sends traps to alert the network manager when a trigger occurs.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide Common Problems This section lists common possible sources of error and actions required to fix them. Link/Receive LED on Any Port is OFF This may indicate: " A loose data cable. " The device at the other end of the connection is turned OFF. " The data cable is not wired correctly (straight/crossed) for the device. " The nework administrator manually disabled the port through the software.
Troubleshooting Power LED is OFF If there is no power to the switch, it cannot function. A Power LED that is OFF may indicate: " A loose power cord. " Power supply failure, malfunction, or loss of power to the power supply. " A power supply voltage below acceptable levels. " A high switch temperature due to fan failure or ambient temperature extreme. Perform the following steps in sequence; you need not proceed to the next step if the problem is resolved: 1.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide 3. Unplug the switch from the power source, then plug it back in again. 4. Try to log on to Omega and run diagnostics (Administration>Diagnostics). 5. Download software using the Administration menu. Refer to the AT-S21 Software Management User’s Guide, downloaded from www.alliedtelesyn.com and follow the procedures in Chapter 4. 6. Contact Allied Telesyn’s Technical Support for help.
Chapter 4 Switch Configurations This chapter provides network configuration examples using the switch models described in this guide. The Switch in a Standalone Configuration Figure 4-1 shows the AT-8124XL used as a standalone switch for a group of heavy traffic users. Switching is brought to the desktop either through a single end-station per switch port or through a multi-port hub. A 100 Mbps server is connected to a port, providing end stations high-speed accessibility to its applications.
Switch Configurations The Switch in Workgroup Configurations Figure 4-2 shows how the different switches fit into a large corporate network with a Fast Ethernet infrastructure. A switch is located on each floor and servers are centralized in one room.
Appendix A Translated Safety Information IMPORTANT: This appendix contains multiple-language translations for the safety statements in this guide. WICHTIG: Dieser Anhang enthält Übersetzungen der in diesem Handbuch enthaltenen Sicherheitshinweise in mehreren Sprachen. VIGTIGT: Dette tillæg indeholder oversættelser i flere sprog af sikkerhedsadvarslerne i denne håndbog. BELANGRIJK: Deze appendix bevat vertalingen in meerdere talen van de veiligheidsopmerkingen in deze gids.
Translated Safety Information Standards: This product meets the following safety standards. U.S. Federal Communications Commission Radiated Energy Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide ! 14 OPERATING TEMPERATURE This product is designed for a maximum ambient temperature of 40 degrees C. ! 15 All Countries: Install product in accordance with local and National Electrical Codes. NORMEN: Dieses Produkt erfllt die Anforderungen der nachfolgenden Sicherheitsnormen. !1 Hochfrequenzstörung !2 WARNUNG: Bei Verwendung zu Hause kann dieses Produkt Funkstörungen hervorrufen.
Translated Safety Information !8 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.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide ! 12 ELEKTRISCHE SNOEREN Gebruik een elektrisch snoer, maximum 4,5 meter lang, berekend voor ten minste 5 ampåçère, 250 V, uit HAR vervaardigd, met aan het ene uiteinde een gevormd IEC 320 aansluitstuk en aan het andere uiteinde een stekker die goedgekeurd is door het land waar het toestel gebruikt zal worden. WAARSCHUWING: Gebruik de geïnstalleerde produkten slechts in HORIZONTALE stand. GEBRUIK ZE NIET VERTICAAL.
Translated Safety Information !1 Radioaaltojen häirintä !2 VAROITUS: Kotiolosuhteissa tämä laite voi aiheuttaa radioaaltojen häiröitä, missä tapauksessa laitteen käyttäjän on mahdollisesti ryhdyttävä tarpeellisiin toimenpiteisiin. !3 Kestävyys EN50082-1 !4 Sähköturvallisuus TUV-EN60950, UL1950, CSA 950 !5 Laser EN60825 !6 VAROITUS Luokan 1 Lasertuote. !7 VARIOTUS Älä katso säteeseen. !8 SÄHKÖÖN LIITTYVIÄ HUOMAUTUKSIA VAROITUS: SÄHKÖISKUVAARA Estääksesi SÄHKÖISKUN älä poista kantta.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide !9 PERICOLO DI FULMINI PERICOLO: NON LAVORARE sul dispositivo o sui CAVI durante PRECIPITAZIONI TEMPORALESCHE. ! 10 ATTENZIONE: IL CAVO DI ALIMENTAZIONE È USATO COME DISPOSITIVO DI DISATTIVAZIONE. PER TOGLIERE LA CORRENTE AL DISPOSITIVO staccare il cavo di alimentazione. ELETTRICITÀ—REGOLAZIONE AUTOMATICA DELLA TENSIONE Questo prodotto regolerà automaticamente la tensione ad un valore compreso nella gamma indicata sull’etichetta.
Translated Safety Information ADVARSEL: Installerte produkter må bare benyttes i HORISONTAL posisjon. MÅ IKKE BENYTTES VERTIKALT. ! 13 FORSIKTIG: Lufteventilene må ikke blokkeres, og må ha fri tilgang til luft med romtemperatur for avkjøling. ! 14 DRIFTSTEMPERATUR Dette produktet er konstruert for bruk i maksimum romtemperatur på 40 grader celsius. ! 15 ALLE LAND: Produktet må installeres i samsvar med de lokale og nasjonale elektriske koder.
AT-8118, AT-8124XL, and AT-8126XL Installation Guide !1 Emisión RFI !2 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. !3 Inmunidad EN50082-1 !4 Seguridad eléctrica TUV-EN60950, UL1950, CSA 950 !5 Laser EN60825 !6 ¡ADVERTENCIA! Producto láser Clase 1. !7 ¡ADVERTENCIA! No mirat fijamente el haz.
Translated Safety Information !9 FARA FÖR BLIXTNEDSLAG FARA: ARBETA EJ på utrustningen eller kablarna vid ÅSKVÄDER. ! 10 VARNING: NÄTKABELN ANVÄNDS SOM STRÖMBRYTARE FÖR ATT KOPPLA FRÅN STRÖMMEN, dra ur nätkabeln. ELEKTRISKT—AUTOMATISK SPÄNNINGSJUSTERING Denna produkt justeras automatiskt till alla spänningar inom omfånget som indikeras på produktens märkning. ! 11 ELEKTRISKT—TYP KLASS 1 UTRUSTNING DENNA UTRUSTNING MÅSTE VARA JORDAD. Nätkabeln måste vara ansluten till ett ordentligt jordat uttag.
Appendix B Technical Specifications Table B-1 lists the technical specifications for the AT-8118, AT-8124XL, and AT-8126XL switches. Table B-1 Technical Specifications Physical Specifications Dimensions (H x W x D) Weight Base unit 2.55 in x 16.9 in x 14.5 in 11 lbs (5 kg) (6.48 cm x 42.93 cm x 36.83 cm) Required ventilation on all sides 7.
Technical Specifications Table B-2 shows the pin assignments for the switches’ RJ45 connectors. Table B-2 RJ45 Pin Assignments Pin Number Function 1 RD+ 2 RD- 3 TD+ 4 Unused 5 Unused 6 TD- 7 Unused 8 Unused Table B-3 lists the specifications for the AT-A10, AT-A11, AT-A20 and AT-A21 media dependent adapters. The MDAs are installed in the AT-8118 or AT-8126XL switch’s uplink slots. Table B-3 Media Dependent Adapters AT-A10 AT-A11/AT-A20/AT-A21 Physical Dimensions (H x W x D) 0.
Appendix C Switch Default Settings This appendix lists the switch’s default software settings as configured by the factory. Table C-1 Switch Default Settings Settings Default IP Address 0.0.0.0 Subnet Mask 0.0.0.0 Gateway Address 0.0.0.
Index Numerics 100 M (port speed) LED, 2-4, 3-4 A address, IP, 2-10 architecture clear-channel, 1-3 shared memory, 1-3 AT-8118, AT-8124XL, and AT-8126XL switches 1-1 AT-A10, AT-A11, AT-A20, and AT-A21 installation, 2-7 standoff, 2-7 auto-negotiation, 1-1, 1-3 B backbone, redundant connections, 1-4 bandwidth capability, 1-1 buffer memory, size, 1-3 C cabling requirements, 2-11, 3-2 clear-channel architecture, 1-3 configuration, 4-1 connections redundant backbone, 1-4 conventions, document, Preface-ii cut-th
Index S M management local, Omega, 2-10 network features, 1-4 out-of-bandwith, 1-7 management information base (MIB), 1-4 media dependent adapters (MDAs), see AT-A10, AT-A11, AT-A20, and AT-A21 memory, packet buffer size, 1-3 mode cut-through, fragment free (for 100 Mbps ports only), 1-5 store-and-forward, 1-5 models AT-8118, AT-8124XL and AT-8126XL, 1-2 safety information, A-1 safety precautions, 2-2 settings terminal, 2-10 shared memory architecture, 1-3 site preparation, 2-3 SNMP Management Informatio
