Accton Technology FAST ETHERHUB-12S manual Physical Configuration, Hub Integrity

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Fast EtherHub-12s 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. Ensure that cable distances and other physical aspects of the installation do not exceed recommendations.

Hub Integrity

As a last resort verify the hub’s integrity with a power-on reset. Turn the power to the hub off and then on a few times. If the problem still persists and you have completed all the preceding diagnoses, contact your Accton distributor for further assistance. (Refer to Appendix E.)

Troubleshooting

A-3

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Contents Fast EtherHub-12s Installation Manual QWHUQDWLRQDO+HDGTXDUWHUV Package Contents Quick Installation Fast EtherHub-12s User’s Guide About this Guide Contents Appendix C Specifications Appendix a TroubleshootingAppendix E Product Support Services Appendix B Port and Cable AssignmentsList of Tables Glossary Index List of FiguresProduct Overview Introduction to Fast EthernetAccton’s Fast EtherHub-12s Basic Features Fast EtherHub-12s User’s Guide Pre-Installation Requirements Installing the SystemMaking a Connection via an MDI-X Station Port Connecting the Hub SystemDistance Limit for Fast Ethernet Cabling Making a Connection via the MDI Daisy-Chain PortPrecise Cable Length Budgeting Providing Power to the EtherHub Verifying System Operation Verifying Port StatusFast EtherHub-12s User’s Guide Configuring the Network Connecting Multiple HubsStand-Alone Multiple Hub Configuration Using the Daisy-Chain Port Using the RJ-45 Daisy-Chain PortPrecise Guidelines for Configuring Multiple Hubs Cabling Limits for Multiple Hub Configuration Indicators Hardware ReferenceFront Panel Color Red Label Alert Function Fan status Hardware Reference Color Label Function RJ-45 Ethernet Ports Rear Panel Power SocketDiagnosing Hub Indicators Appendix a TroubleshootingSystem Diagnostics Power and Cooling ProblemsInstallation Hub Integrity Physical ConfigurationRJ-45 Port Appendix BCategory 5 STP/UTP Appendix C Product SpecificationsAppendix D EMI CertificationFCC Class B Certification Voluntary Control Council for Interference VCCI-2 European Community Immunity Requirements CE Mark Declaration of Conformance for EMI and SafetyUnderwriters Laboratories Inc Safety ComplianceSicherheitshinweise Problem Report Appendix E Product Support ServicesHardware Repair Service Product RegistrationInteractive Fast Fax U.S.A. office Bulletin Board Service BBSInternational Headquarters USA Headquarters Technical SupportCustomer Remedies Limited WarrantyNorth and South America Return ProcessOrdering Information Accton Offices100BASE-TX GlossaryLED Shielded Twisted-Pair STP Index Index EH3012-TX 150114-101 E0197-R02