Accton Technology FAST ETHERHUB-12S manual

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Installation Manual Fast EtherHub-12s Smart Fast Ethernet Hub with 12 100BASE-TX Ports[...]

Copyright (c) 1997 by Accton Technology Corporation. All rights reserved. No part of this document may be copied or reproduced in any form or by any means without the prior written consent of Accton Technology Corporation. Accton makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability, quality,[...]

Package Contents i Package Contents Carefully unpack the contents of the package and verify them against the checklist given below. Package Checklist æ Fast EtherHub-12s (Model No. EH3012-TX) æ AC power cord (optional) æ Four rubber foot pads æ Installation manual æ Warranty registration card Please inform your dealer immediately should there [...]

Quick Installation iii Quick Installation The Fast EtherHub-12s is a Class II repeater. It contains 12 100BASE-TX Fast Ethernet ports. The smart design built into the front display panel provides a friendly interface that simplifies installation and network troubleshooting. If you are already familiar with basic network operations, you should be ab[...]

Fast EtherHub-12s User’s Guide iv Quick Installation first calculate the maximum length permitted between each pair of end nodes as described in Chapter 2 under the section on Precise Cable Length Budgeting . 5. Verify network communications by ensuring that - • you have made all the necessary connections • you can access any connected resour[...]

About this Guide v About this Guide This guide is designed for the experienced network installer. It describes how to install and operate Accton’s Fast EtherHub-12s. After reading this manual, you should be able to use the front display panel and configure options to manage all your network connections. This manual covers the following topics: Ch[...]

Contents Contents vii Chapter 1: Product Overview ................................................. 1-1 Introduction to Fast Ethernet ..................................................................................... 1-1 Accton’s Fast EtherHub-12s...................................................................................... 1-1 Basic F[...]

Fast EtherHub-12s User’s Guide viii Contents Appendix A: Troubleshooting ................................................ A-1 Diagnosing Hub Indicators ........................................................................................ A-1 System Diagnostics ....................................................................................[...]

Fast EtherHub-12s User’s Guide Contents ix Limited Warranty ....................................................................................................... E-4 Customer Remedies .............................................................................................. E-4 Return Process ................................................[...]

Product Overview 1-1 Chapter 1: Product Overview Introduction to Fast Ethernet Standard 10 Mbps Ethernet has served well for past generations of 286 and 386 machines performing simple file transfers. However, with the inevitable growth in corporate network size and the introduction of fully-functional 32-bit PC architectures, and operating sy stem [...]

Fast EtherHub-12s User’s Guide 1-2 Product Overview Basic Features • Transmits data at 100 Mbps for demanding applications • Conforms to the IEEE 802.3u repeater specification for 100BASE-TX • Provides 12 RJ-45 100BASE-TX station ports (using MDI-X wiring) • Port 12 can serve as an MDI-X station port (for connection to network devices suc[...]

Fast EtherHub-12s User’s Guide Product Overview 1-3 • With automatic partitioning and reconnection, any port is automatically isolated if excessive collisions occur on it. When the condition is corrected, the port is automatically reconnected. • With the jabber lock-up function, the hub automatically stops transmission of abnormal Ethernet fr[...]

Installing the System 2-1 Chapter 2: Installing the System This chapter provides information on installing the Fast EtherHub-12s, estab- lishing network connections, and configuring the system. You may install this hub on any lev el surface (e.g ., a table or shelf) or in a standard EIA equipment rack. However, please take note of the following min[...]

Fast EtherHub-12s User’s Guide 2-2 Installing the System Connecting the Hub System This hub is a Fast Ethernet repeater for 100BASE-TX networks. The EtherHub-12s has 12 RJ-45 station ports, of which Port 12 can serve as eith er a station port or a daisy- chain port (depending on the port’s switch setting). The station ports allow you to m ake c[...]

Fast EtherHub-12s User’s Guide Installing the System 2-3 Making a Connection via the MDI Daisy-Chain Port 1. To make a direct connection to another compatible rep eater or switch, use the 12MDI daisy-chain port. When connecting to this port, remember to set the port selection switch MDI . 2. Prepare straight-through shielded or unshielded twisted[...]

Fast EtherHub-12s User’s Guide 2-4 Installing the System Simplified Cable Length Constraints The Fast EtherHub-12s is a Class II repeater. IEEE recommends that Class II hubs be limited to a cascade of two hubs. The simplest rule is that workstation connections be limited to 100 meters for twisted-pair cabling, and that interhub cabling be limited[...]

Fast EtherHub-12s User’s Guide Installing the System 2-5 connected hub when using twisted-pair cabling. However, when linking o ne or more F ast Ethernet repeaters tog ether (i.e., in the sam e collision domain), the overall length of cable used between any two nodes should not exceed the limits outlined in the I EEE 802.3u standard. In precise t[...]

Fast EtherHub-12s User’s Guide 2-6 Installing the System Verifying Port Status Check each connection by viewing the port status indicators listed below. (For a more detailed description of these indicators, refer to Chapter 4.) Link Indicates that the port has established a valid network connection. Traffic Indicates traffic traversing the port. [...]

Fast EtherHub-12s User’s Guide Installing the System 2-7 • Test the adapter for an attached workstation by trying it in another computer that has been successfully connected to the network. If y ou still can’t resolv e the problem , please refer to Troubleshooting in Appendix A.[...]

Configuring the Network 3-1 Chapter 3: Configuring the Network The Fast EtherHub-12s allows great flexibility in configuring your network. You can use it in a stand-alone or multiple hub configuration. Some of the common applications for this Fast EtherHub are described in this chapter. Stand-Alone This hub can be used in a simple stand-alone confi[...]

Fast EtherHub-12s User’s Guide 3-2 Configuring the Network Using the RJ-45 Daisy-Chain Port You can easily connect to another hub via the MDI daisy-chain port (Port 12). When using Simplied Cable Length Constraints as described in Chapter 2, the inter- hub cable length is 5 meters. Figure 3-2 shows a sample configuration. Figure 3- 2 Multiple Hub[...]

Fast EtherHub-12s User’s Guide Configuring the Network 3-3 Precise Guidelines for Configuring Multiple Hubs A detailed formula for calculating maximum cable length was provided in the section on Precise Cable Length Budgeting in Chapter 2. This formula stated that the maximum length of cabling that can be run from end-node to end-node is: 367m ?[...]

Fast EtherHub-12s User’s Guide 3-4 Configuring the Network Figure 3- 3 Cabling Limits for Multiple Hub Configuration Notes: 1. The maximum length for each cable must be determined by calculations for the longest path (i.e., node-to-node connection) that passes through that segment. 2. To control the number of hubs in a path, we recommend that one[...]

Hardware Reference 4-1 Chapter 4: Hardware Reference Before connecting any network device to this hub, please review Chapter 2 for information on system installation and Chapter 3 for a brief look at common network architectures. This chapter describes the hardware features of the Fast EtherHub-12s. For easier management and control of the hub, fam[...]

Fast EtherHub-12s User’s Guide 4-2 Hardware Reference The front panel array provides indicators that show the utilization of network bandwidth and indicate the statu s o f p o rt c o n n e ct io n s . I t in c lu d e s port status indicators and a statistical display for network traffic as shown below. Figure 4.2 Indicators Fan Alert Color: Red L[...]

Fast EtherHub-12s User’s Guide Hardware Reference 4-3 Statistical Display for System Performance Utilization - ( Utilization % ) The statistical indicators show the percentage of valid data passing through all ports compared to overall network bandwidth (updated every 0.5 seconds). There are 5 LEDs representing the percentag e of network utilizat[...]

Fast EtherHub-12s User’s Guide 4-4 Hardware Reference Note: If the hub displays a high collision rate, check to see if any of the connected devices are malfunctioning or if a loop has been formed in your network connections. Otherwise, you may need to reconfigure your network to balance the traffic load. Port Status Display Partition Status Color[...]

Fast EtherHub-12s User’s Guide Hardware Reference 4-5 Troubleshooting : If the Link LED does not light up w hen a device is connected to its corre- sponding port, check that both the hub and connected dev ice ar e pow ered on. Be sure the cable length for all devices connected to the hub are within the limits described under Distance Limit for Fa[...]

Fast EtherHub-12s User’s Guide 4-6 Hardware Reference Rear Panel The rear panel on the hub includes a full- rang e p ow er so ck et. Figure 4.3 Rear Panel Power Socket The power socket accepts AC power from 100 to 240V at 50 to 60Hz. The unit is equipped with a universal full-range power source.[...]

Troubleshooting A-1 Appendix A: Troubleshooting Diagnosing Hub Indicators This Fast EtherHub can be easily monitored through its com prehensive panel indicators. These indicators assist the network manager in identifying problems the hub may encounter. This section describes common problems you may encounter and possible solutions. Symptom: Power i[...]

Fast EtherHub-12s User’s Guide A-2 Troubleshooting System Diagnostics Power and Cooling Problems If the Power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply as explained in the previous section. However, if the unit powers off after running for a whi[...]

Fast EtherHub-12s User’s Guide Troubleshooting A-3 External Adapters Make sure the network interface hardware and software drivers for the attached devices are function properly. Check the adapter cards and associated drivers used in any attached workstation or server. Physical Configuration If problems occur after altering the network configurat[...]

Cable and Port Assignments B-1 Appendix B: Port and Cable A ssignments RJ-45 Port Figure B-1 RJ-45 Connector (on the Hub Side) Pin MDI-X Assignment (Station Port 1 ~ 12) MDI Assignment (Cascade Port 12) 1 Input Receive Data + Output Transmit Data + 2 Input Receive Data - Output Transmit Data - 3 Output Transmit Data + Input Receive Data + 6 Output [...]

Product Specifications C-1 Appendix C: Product Specifications Transmission Technique Baseband Topology Star or Tree Access Method CSMA/CD, 100Mbps Standards Conformance IEEE 802.3u 100BASE-TX Class II Repeater Media Supported Unshielded or shielded twisted-pair cable (100 W Category 5 STP/UTP) Interfaces 12 RJ-45 MDI-X station ports, Port 12 can be[...]

Regulatory Standards Compliance D-1 Appendix D: Regulatory Standards Compliance EMI Certification FCC Class B Certification Accton Technology Corporation Model Numbers: EH3012-TX FCC ID: HED3012EHLCT-TX This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: 1. This device may not cause harmful interfer[...]

Fast EtherHub-12s User’s Guide D-2 Regulatory Standards Compliance Warnings 1. Wear an anti-static wrist strap or take other suitable measures to prevent electrostatic discharge whenever handling this equipment. 2. When connecting this hub to a power outlet, connect the field ground lead on the tri-pole power plug to a valid earth ground line to [...]

Fast EtherHub-12s User’s Guide Regulatory Standards Compliance D-3 Read the instructions for correct handling. European Community Immunity Requirements This unit was tested and found to comply with the Class B limits of EN55022 (CISPR 22) and the immunity requirements of EN50082-1. CE Mark Declaration of Conformance (for EMI and Safety) This is t[...]

Fast EtherHub-12s User’s Guide D-4 Regulatory Standards Compliance Safety Compliance Underwriters Laboratories Inc. Important! Before making connections, make sure you have the correct Cord Set. Check it (read the label on the cable) against the following specification list. Operating Voltage Cord Set Specifications 120 Volts UL Listed/CSA Certif[...]

Fast EtherHub-12s User’s Guide Regulatory Standards Compliance D-5 Sicherheitshinweise 1. Die Steckdose muß sich in der Nähe des Gerätes befinden und leicht zugänglich sein. 2. Zum Reinigen den Stecker aus der Steckdose ziehen. Beim Reinigen keine Flüssigreiniger oder Sprays verwenden, sondern ein angefeuchtetes Tuch. 3. Das produkt gerät n[...]

Product Support Services E-1 Appendix E: Product Support Services Product Registration Fill in the Owner Registration Card and mail it to Accton Technology Corporation. Accton will keep your record and inform you of any new Accton unit developments. Problem Report If problems occur during unit operation, please check the adapter configuration setti[...]

Fast EtherHub-12s User’s Guide E-2 Product Support Services After repair, Accton will inform you of the date of delivery and the exact amount due. Please send the payment by T/T (Telegram Transfer), and Accton will send you the fixed component after receiving payment. With or without warranty, if the hardware is found to be free of defects, you w[...]

Fast EtherHub-12s User’s Guide Product Support Services E-3 Technical Support Your dealer or installer is the person who understands your network and Accton units. If neither is available to help you, Accton technical support engineers are available by FAX, mail or phone. • Send your technical questions by FAX to: International Headquarters: 88[...]

Fast EtherHub-12s User’s Guide E-4 Product Support Services Limited Warranty Accton warrants to the original owner that the product delivered in this package will be free from defects in material and workmanship for the lifetime of the product. For the warranty to apply, you must register your purchase by returning the registration card indicatin[...]

Fast EtherHub-12s User’s Guide Product Support Services E-5 Return Process Before you may return any Accton product to Accton, you must request an RMA number by calling, FAXing or writing Accton’s Service Department at the address listed below. If you ship the product, you must assume the risk of damage or loss in transit. You must use the orig[...]

Fast EtherHub-12s User’s Guide E-6 Product Support Services Accton Offices Accton Technology Corporation International Headquarters, No. 1 Creation Rd. III, Science-based Industrial Park, Hsinchu 300, Taiwan, R.O.C. Hsinchu: Phone: 886-3-5770-270, Fax: 886-3-5770-267, 886-3-5775-541 BBS: 886-3-5770-654 Taipei: Phone: 886-2-577-1220 to 9 Fax: 886-[...]

Glossary 1 Glossary 100BASE-TX IEEE’s specifications for 100 Mbps Ethernet using twisted-pair cable (100 W Cat. 5 STP or UTP ) . The maximum length of cable for a point-to-point connection is 100 meters. Collision A condition in which two packets transmitted over a medium interfere with each other. Their interference makes both signals unintellig[...]

Fast EtherHub-12s User’s Guide 2 Glossary Fast Ethernet 100 Mbps network communication system based on Ethernet and the CSMA/CD access method. IEEE 802.3 Standard Standard for the physical and electrical connections in local area networks developed by the IEEE. The IEEE 802.3u standard covers these same issues for 100 Mbps networks. LED Light emi[...]

Fast EtherHub-12s User’s Guide Glossary 3 Shielded Twisted-Pair (STP) 100 W Category 5 twisted-pair wire covered with an external aluminum-foil or woven- copper shield designed to reduce excessive noise pick up or radiation. The STP cable refered to in this manual is also sometimes called screened twisted-pair (ScTP). Its impedance is 100 W and h[...]

Index 1 Index A Accton's Fast EtherHub-12s • 1-1 Automatic Partitioning • 1-3 Automatic Polarity Detection • 1-3 C Cable Length Precise Cable Length Budgeting • 2-4 Simplified Cable Length Constraints • 2-4 Certification • C-1 Class II Repeater • 2-5, 3-3 Configuring the Network • 3-1 Connecting Multiple Hubs • 3-2 Connecting[...]

Fast EtherHub-12s User’s Guide 2 Index M Maximum Cable Length • 2-4 MDI Daisy-chain Port • 3-2 N Network Connection MDI Daisy-Chain Port • 2-3 MDI-X Station Port • 2-2 P Port and Cable Assignments • B-1 Port Status Indicators • 4-4 Power Cord Specifications • D-4 Power Socket • 4-6 Product Features • 1-2 Product Support Services[...]

EH3012-TX 150114-101 E0197-R02[...]