Fast EtherHub-8se &INO
Installation Manual Fast EtherHub-8se Smart Fast Ethernet Hub with 8 100BASE-TX Ports; including TalkingHub™ support
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-8se (Model No. EH3008e-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-8se 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-8se. 2. Find a location close to the network devices you need to connect, and within easy reach of an electrical outlet. 3.
Fast EtherHub-8se 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., a 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-8se. 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-8se ......................................................................................1-1 Basic Features ...........................................................................................................1-2 Chapter 2: Installing the System..........................
Fast EtherHub-8se User’s Guide Rear Panel ...............................................................................................................4-7 RJ-45 Ethernet Ports.............................................................................................4-7 Power Socket........................................................................................................4-7 Appendix A: Troubleshooting ................................................ A-1 Diagnosing Hub Indicators...........
Fast EtherHub-8se User’s Guide Technical Support .....................................................................................................E-3 Limited Warranty ......................................................................................................E-4 Customer Remedies..............................................................................................E-4 Return Process......................................................................................................
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-8se User’s Guide Basic Features • Transmits data at 100 Mbps for demanding applications • Issues audio messages for power on, busy network conditions, and any change in port link or partition status • Conforms to the IEEE 802.
Fast EtherHub-8se User’s Guide • 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 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.
Chapter 2: Installing the System This chapter provides information on installing the Fast EtherHub-8se, 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-8se User’s Guide Connecting the Hub System The EtherHub-8se 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, 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-8se User’s Guide Making a Connection via the MDI Daisy-Chain Port 1. To make a direct connection to another compatible hub or switch, use the 8MDI daisy-chain port. When connecting to this port, remember not to use Port 8MDI-X. 2. Prepare straight-through shielded or unshielded twisted-pair cables with RJ-45 plugs on both ends. Use 100W Category 5 cable for all connections.
Fast EtherHub-8se User’s Guide Simplified Cable Length Constraints The Fast EtherHub-8se is a Class II repeater. IEEE recommends that Class II repeaters be limited to a cascade of two hubs. The simplest rule is that workstation connections be limited to 100 meters (328 feet) for twisted-pair cabling and that interhub cabling be limited to 5 meters (16 feet). If you are stacking hubs in a wiring closet, this is good advise.
Fast EtherHub-8se User’s Guide However, when setting up these kinds of distributed cascades, you have to be very careful in calculating the maximum length for each node pair. All endnode devices (e.g., workstations or servers) must be within 100 meters (328 feet) of the connected hub when using twisted-pair cabling. However, when linking one or more Fast Ethernet hubs together (i.e.
Fast EtherHub-8se User’s Guide Providing Power to the EtherHub 1. Power on the hub by plugging the power cord into the power socket at the rear of the EtherHub, and the other end into a power outlet. 2. Check the LED marked Power on the front panel to see if it is on. The unit will automatically select the setting that matches the connected input voltage. Therefore, no additional adjustments are necessary when connecting it to any input voltage within the range marked on the rear panel. 3.
Fast EtherHub-8se 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-8se 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-8se 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-8se User’s Guide 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 (1204 feet) ≥ S(repeater equivalent length) + S(length of category 5 twisted-pair cable) For the daisy chain of three hubs shown in Figure 3.
Fast EtherHub-8se 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-8se. For easier management and control of the hub, familiarize yourself with the display indicators on the front panel and the ports on the rear panel.
Fast EtherHub-8se User’s Guide Panel Indicators 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.
Fast EtherHub-8se User’s Guide Speech Status Color: Label: Function: Condition ON OFF Orange Speech Talking function indicator Indication Talking function is enabled. Talking function is disabled. 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.
Fast EtherHub-8se User’s Guide The Collision LEDs assist the network manager in monitoring the percentage of packet collisions occurring relative to the total packets transmitted by the hub. When collisions reach a level marked on the front panel display, the corresponding LED lights up. For example, if packet collisions reach 1%, the LED labeled 1% will light up. However, if collisions go beyond 1% (e.g., 15%), the LED labeled 15+% and all the other LEDs before it (i.e.
Fast EtherHub-8se User’s Guide Link Status Color: Label: Function: Condition ON BLINKING OFF Green Link/Traffic Indicates a valid network connection and traffic entering the port. Indication Indicates a valid link has been established on this port. Indicates the port is receiving packets; blinking is proportional to the traffic entering the port. No valid link has been established on this port.
Fast EtherHub-8se User’s Guide Condition Power On Port Link Connection Message “The system has started.” “To install your system, please use Category 5 TP cable.” “The maximum distance from a PC to a hub is 100 meters.” “If you encounter any problem, please refer to the product manual.” “The link is ready on port number X (1,2,...8).” Port Link Disconnection “The link is disconnected on port number X (1,2,...8).” Busy Network “The network is busy.” Partitioned Port “Port number X (1,2,...
Fast EtherHub-8se User’s Guide Rear Panel The rear panel on the hub includes 8 RJ-45 MDI-X station ports, 1 RJ-45 MDI daisy-chain port, and a full-range power socket. Figure 4.3 Rear Panel RJ-45 Ethernet Ports This hub includes 8 Fast Ethernet station ports on the rear 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.
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-8se 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 that the fan on the side of the unit is unobstructed and running prior to shutdown.
Fast EtherHub-8se User’s Guide External Adapters Make sure the network interface hardware and software drivers for the attached devices are functioning 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 Input Power Power Consumption Temperature Humidity Certification Emissions Immunity Safety Baseband Star or Tree CSMA/CD, 100Mbps IEEE 802.
Appendix D: Regulatory Standards Compliance EMI Certification FCC Class B Certification Accton Technology Corporation Model Numbers: EH3008e-TX FCC ID: HED3008eEHLCT-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 interference, and 2. This device must accept any interference received, including interference that may cause undesired operation.
Fast EtherHub-8se User’s Guide You are cautioned that changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment. 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 device 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.
Fast EtherHub-8se User’s Guide EN55022 Declaration of Conformance This is to certify that the Accton Ethernet Hub is shielded against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is declared by the application of EN55022:1987 Class B (CISPR 22:1985/BS 6527:1988). Compliance with the applicable regulations is dependent upon the use of shielded cables.
Fast EtherHub-8se 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-8se User’s Guide Wichtige Sicherheitshinweise 1. Bitte lesen Sie diese Hinweise sorgfältig durch. 2. Heben Sie diese Anleitung für den späteren Gebrauch auf. 3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie keine Flüssigoder Aerosolreiniger. Am besten eignet sich ein angefeuchtetes Tuch zur Reinigung. 4. Die Netzanschlußsteckdose soll nahe dem Gerät angebracht und leicht zugänglich sein. 5. Das Gerät ist vor Feuchtigkeit zu schützen. 6.
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-8se 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-8se 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-8se 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-8se 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-8se 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-8se 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-8se 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-8se • 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 • 2-6 Crossover Cable • B-1 I IEEE 802.
Fast EtherHub-8se User’s Guide Interfaces • C-1 Media Supported • C-1 Power System • C-1 Standards Conformance • C-1 Speech Button • 4-5 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 • 4-7 Product Features • 1-2 Product Support Services • E-1 Accton Offices • E-6 Bulletin Board Ser
EH3008e-TX 150606-101 E0797-R02
