Fast EtherHub-8s &INO
Installation Manual Fast EtherHub-8s Smart Fast Ethernet Hub with 8 100BASE-TX Ports
Copyright © 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, or fitness for any particular purpose. The information in this document is subject to change without notice.
Package Contents Carefully unpack the contents of the package and verify them against the checklist given below. Package Checklist æ æ æ æ æ Fast EtherHub-8s (Model No. EH3042S-TX) AC power cord (optional) Four rubber foot pads Installation manual Warranty registration card Please inform your dealer immediately should there be any wrong, missing, or damaged parts. If possible, retain the carton, including the original packing materials.
Quick Installation The Fast EtherHub-8s contains 8 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 able to install this hub as described below: 1. Unpack the Fast EtherHub-8s. 2. Find a location close to the network devices you need to connect, and within easy reach of an electrical outlet. 3.
Fast EtherHub-8s User’s Guide 6. This hub can serve as a stand-alone repeater for small networks, can be cascaded with compatible devices (e.g., Fast Ethernet hub or switch), or can be connected to a network interconnection device (e.g., Fast Ethernet bridge or router). 7.
About this Guide This guide is designed for the experienced network installer. It describes how to install and operate Accton’s Fast EtherHub-8s. 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: Chapter 1 - Product Overview Brief description of Fast Ethernet, followed by a description of this hub and a summary of its important features and specifications.
Contents Chapter 1: Product Overview ................................................. 1-1 Introduction to Fast Ethernet .....................................................................................1-1 Accton’s Fast EtherHub-8s ........................................................................................1-1 Basic Features ...........................................................................................................1-2 Chapter 2: Installing the System.........................
Fast EtherHub-8s User’s Guide Appendix A: Troubleshooting ................................................ A-1 Diagnosing Hub Indicators........................................................................................A-1 System Diagnostics ...................................................................................................A-2 Power and Cooling Problems ...............................................................................A-2 Installation ......................................
Fast EtherHub-8s User’s Guide Limited Warranty .......................................................................................................E-4 Customer Remedies..............................................................................................E-4 Return Process......................................................................................................E-5 Accton Offices...........................................................................................................
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 systems running complex applications, 10 Mbps Ethernet has become a serious bottleneck.
Fast EtherHub-8s User’s Guide Basic Features • Transmits data at 100 Mbps for demanding applications • Conforms to the IEEE 802.
Fast EtherHub-8s User’s Guide • With the jabber lock-up function, the hub automatically stops transmission of abnormal Ethernet frames that may cause data loss for all network users. (Jabber refers to abnormal Ethernet frames which are much too long and may come from a malfunctioning Ethernet card.) • With automatic polarity detection, the hub recognizes and adjusts for attached cable assemblies which may be wired with incorrect polarity on the receive pair.
Chapter 2: Installing the System This chapter provides information on installing the Fast EtherHub-8s, establishing network connections, and configuring the system. You may install this hub on any level surface (e.g., a table or shelf) or in a standard EIA equipment rack. However, please take note of the following minimum site requirements before you begin.
Fast EtherHub-8s User’s Guide Connecting the Hub System The EtherHub-8s has 8 RJ-45 station ports and 1 RJ-45 daisy-chain port. The station ports allow you to make connections to devices such as a workstation, server, bridge or router. You can also cascade to another compatible hub or switch by connecting an MDI port on one device (e.g., Port 8MDI on this hub) to an MDI-X port on the other device. Or you can cascade from an MDI port on another device to any MDI-X port on this hub. See Figure 3.2.
Fast EtherHub-8s User’s Guide Making a Connection via the MDI Daisy-Chain Port 1. To make a direct connection to another compatible repeater or switch, use the 8MDI daisy-chain port. When connecting to this port, remember not to use Port 8MDI. 2. Prepare straight-through shielded or unshielded twisted-pair cables with RJ-45 plugs at both ends. Use 100W Category 5 cable for all connections.
Fast EtherHub-8s User’s Guide from node to node is 367m - (2 x 72m) = 223m (732 ft). Therefore, if both node A and B are linked to separate repeaters in a two hub system, each using 100 meters (328 feet) of cable to connect to their respective hub, then the interhub cabling will be limited to 23 meters (75 feet), i.e., 223m - 2x100m = 23m, as illustrated in Figure 3-2. Providing Power to the EtherHub 1.
Fast EtherHub-8s User’s Guide Verifying System Operation Verify that all attached devices have a valid connection. The hub monitors link status for each port. If any device is properly connected to the hub and transmitting a link beat signal, the Link indicator lights up for the corresponding port. If the Link indicator fails to light up when you connect a device to the hub, check the following items • Be sure the twisted-pair cable is properly attached to the connected device and the hub.
Chapter 3: Configuring the Network The Fast EtherHub-8s 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 configuration as illustrated below. In compliance with IEEE 802.3u standards, the maximum cable distance between the hub and any workstation is 100 meters (328 feet) for twisted-pair cable.
Fast EtherHub-8s User’s Guide Connecting Multiple Hubs Using the RJ-45 Daisy-Chain Port You can easily connect to another hub via the MDI daisy-chain port. Figure 3.2 shows a sample configuration. Figure 3.
Fast EtherHub-8s User’s Guide Guidelines for Configuring Multiple Hubs In a multiple hub configuration, the maximum overall segment length for interhub cabling depends on the length of the cables used to connect station nodes to the hub system and the number of hubs you cascade together. The IEEE 802.3u standard (illustrated in the preceeding example) provides strict guidelines for calculating the maximum network diameter.
Fast EtherHub-8s User’s Guide 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 hub be used to connect to several other hubs. Make sure there is only one path between any two stations on the network. 3.
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-8s. For easier management and control of the hub, familiarize yourself with the display indicators and ports. Front Panel There are 8 RJ-45 MDI-X station ports and 1 RJ-45 MDI daisy-chain port on the front panel.
Fast EtherHub-8s User’s Guide The front panel array provides indicators that show the utilization of network bandwidth and indicate the status of port connections. It includes port status indicators and a statistical display for network traffic as shown below. Figure 4.2 Indicators Power Status Color: Label: Function: Condition ON OFF 4-2 Green Power Power indicator Indication Unit is receiving power. Power is disconnected, no power received.
Fast EtherHub-8s User’s Guide 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 percentage of network utilization. The corresponding LEDs light up to show that the utilization of LAN bandwidth has reached this level. When active, these LEDs behave like a stereo’s equalizer display.
Fast EtherHub-8s User’s Guide 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.
Fast EtherHub-8s User’s Guide Troubleshooting: If the Link LED does not light up when a device is connected to its corresponding port, check that both the hub and connected device are powered on. For devices connected to the hub using twisted-pair cable, check that the cable length does not exceed 100 meters (328 feet). You should have standard, straight-through cables and not crossover or other specialized cables.
Fast EtherHub-8s User’s Guide Rear Panel There are 8 RJ-45 MDI-X station ports and 1 RJ-45 MDI daisy-chain port on the front panel.This hub includes 8 Fast Ethernet station ports on the front panel; of which Port 8 can also serve as a daisy-chain port. Connect the MDI-X station ports to network devices such as workstations or servers, and the MDI port to a network interconnection device such as another hub or switch. Remember that you cannot connect to Port 8MDI-X and Port 8MDI at the same time.
Appendix A: Troubleshooting Diagnosing Hub Indicators This Fast EtherHub can be easily monitored through its comprehensive 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 indicator does not light up. Cause: Defective power outlet, power cord, or internal power supply. Solution: Have your unit’s power supply or Power LED replaced.
Fast EtherHub-8s User’s Guide 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 while, check for loose power connections, power losses or surges at the power outlet, and verify the fan on back of the unit is unobstructed and running prior to shutdown.
Fast EtherHub-8s User’s Guide 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 configuration, restore the original connections, then try to track the problem down by implementing the new changes, one step at a time.
Appendix B: Port and Cable Assignments RJ-45 Port Figure B-1 RJ-45 Connector (on the Hub Side) Pin 1 2 3 6 4,5,7,8 MDI-X Assignment (Station Port 1 ~ 8) Input Receive Data + Input Receive Data Output Transmit Data + Output Transmit Data Not Used MDI Assignment (Cascade Port 8) Output Transmit Data + Output Transmit Data Input Receive Data + Input Receive Data Not Used Table B-1 RJ-45 Pin Assignments Schematics for both straight and crossover twisted-pair cable are shown below.
Appendix C: Product Specifications Transmission Technique Topology Access Method Standards Conformance Media Supported Interfaces Hub-to-Workstation Distance Daisy-Chain Distance (2 hubs) Dimensions Power System Temperature Humidity Certification Emissions Immunity Safety Baseband Star or Tree CSMA/CD, 100Mbps IEEE 802.3u 100BASE-TX Class II Repeater Unshielded or shielded twisted-pair cable (100W Category 5 STP/UTP) 8 RJ-45 MDI-X station ports, 1 RJ-45 MDI daisy-chain port 100 meters (328 feet) max.
Appendix D: Regulatory Standards Compliance EMI Certification FCC Class B Certification Accton Technology Corporation Model Numbers: EH3042S-TX FCC ID: HED3042S-TXRB This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation.
Fast EtherHub-8s User’s Guide 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 prevent electrical hazards. You may find the following booklet prepared by the Federal Communications Commission helpful: The Interference Handbook This booklet is available from the U.S.
Fast EtherHub-8s User’s Guide CE Mark Declaration of Conformance This is to certify that this product complies with ISO/IEC Guide 22 and EN45014. It conforms to the following specifications: EMC: EN55022(1988)/CISPR-22(1985) IEC 1000-4-2 IEC 1000-4-3 IEC 1000-4-4 IEC 1000-4-6 class B 4kV CD, 8kV AD 3V V/m 1kV - (power line) 0.5kV - (signal line) 3Vrms This product complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC.
Fast EtherHub-8s User’s Guide 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.
Fast EtherHub-8s User’s Guide Wichtige Sicherheitshinweise 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Bitte lesen Sie diese Hinweise sorgfältig durch. Heben Sie diese Anleitung für den späteren Gebrauch auf. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung. Die Netzanschlu ßsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein. Das Gerät ist vor Feuchtigkeit zu schützen.
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 settings, cables, connectors, network terminators, hardware compatibility and other network components.
Fast EtherHub-8s User’s Guide 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 will only be charged for testing and handling. Bulletin Board Service (BBS) • In countries other than the U.S., call 886-3-5770-654 to reach Accton Taiwan’s modem line.
Fast EtherHub-8s User’s Guide 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: 886-3-5770-267 USA Headquarters: 408-452-8988 • To obtain software upgrades connect via ftp to ftp.accton.com.tw • Send your technical questions by email to support@accton.com.
Fast EtherHub-8s User’s Guide 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 indicating the date of purchase and including proof of purchase. There will be a minimal charge to replace consumable components, such as fuses, power transformers, and mechanical cooling devices.
Fast EtherHub-8s User’s Guide 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 original container (or the equivalent) and pay the shipping charge.
Fast EtherHub-8s User’s Guide Accton Offices Accton Australia, Level 6, 10 Help Street, Chatswood, N.S.W. 2067, Australia Phone: 61-2-9410-9860 Fax: 61-2-9410-9861 Accton Technology Corporation International Headquarters, No. 1 Creation Rd. III, Science-based Industrial Park, Hsinchu 300, Taiwan, R.O.C.
Glossary 100BASE-TX IEEE’s specifications for 100 Mbps Ethernet using twisted-pair cable (100W STP or UTP). The maximum length of cable for a point-to-point connection is 100 meters 328 feet). Collision A condition in which two packets transmitted over a medium interferes with each other. Their interference makes both unintelligible. Configuration The way to set up a computer, server, or local area network. Connection A logical binding between two or more users of an interconnection service.
Fast EtherHub-8s User’s Guide 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 emitting diode on the front panel of the hub used for monitoring a hub or network condition. An LED display corresponds to a hub condition.
Fast EtherHub-8s User’s Guide Shielded Twisted-Pair (STP) 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 100W and has the same pin assignment as UTP. This cable should not be confused with the older 150W cable type designed by IBM.
Index A G Accton's Fast EtherHub-8s • 1-1 Automatic Partitioning • 1-3 Automatic Polarity Detection • 1-3 Guidelines for Multiple Hub Configuration • 3-3 H C Hardware Description • 4-1 Certification • C-1 Class II Repeater • 2-3, 3-3 Configuring the Network • 3-1 Connecting Multiple Hubs • 3-2 Connecting the Hub System • 2-2 Connection Verifying • 2-5 Crossover Cable • B-1 I IEEE 802.
Fast EtherHub-8s User’s Guide Interfaces • C-1 Media Supported • C-1 Power System • C-1 Standards Conformance • C-1 Stand-alone Configuration • 3-1 Standards Compliance • D-1 M MDI Daisy-chain Port • 3-2 N Network Connection MDI Daisy-Chain Port • 2-3 MDI-X Station Port • 2-2 T 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 • E-1 Accton Offices • E-6 Bulletin Board Service • E-2 Hardware R
EH3042S-TX 150497-101 E0797-R04
