HP J3188A manual J3188-90001

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Technical information in this document is subject to change without notice.

© Copyright 1997

Hewlett-Packard Company

Printed in Singapore 6/97

Manual Part Number

J3188-90001

J3188-90001

Image 100

Contents HP J3188A Page Installation and Reference Guide HP 10Base-T Hub-16M J3188APublication Number HP 10Base-T Hub-16M J3188A Front of the HubBack of the Hub IiiFeatures Network ConnectionsContents Cables and Connectors Security Information ViiPage Installing the Hub Installing and Configuring Your Hub Verify included partsConnect the external transceiver Verify the hub operates correctlyCord connected directly to the hub for proper operation TimeLED PatternMount the hub Rack or Cabinet MountingTable Mounting Connect the hub to your network Connecting Hubs Together Connecting Devices to the HubTwisted-Pair Cascade Connections Installing ThinLAN ConnectionsOhm terminator Connecting the Hub-16M to a Fiber-Optic Backbone Interpreting LED StatusInterpreting Hub Status LEDs Interpreting Port Status LEDs Following table provides LED port informationPage Troubleshooting Troubleshooting ApproachesTroubleshooting Using a Checklist to Diagnose the Hub Using a Checklist to Diagnose the HubProblem Solution LED Operation Troubleshooting LED Operation Diagnostic TipsPower Coll Hub will automatically recover afterTesting the Hub Only Hub Maintenance TasksClearing a Password for the Ascii Console Running Connectivity Tests Troubleshooting Hub Maintenance TasksObtaining Firmware Enhancements Setting up the Ascii Console Managing the HubRemotely, Using Telnet Directly, Using a Serial Cable and a TerminalManaging the Hub Remotely, Using a Modem and a Terminal Starting the ConsoleConsole Command Reference Commands are described in the rest of the chapterExample HE ST This displays help for the Status command Syntax Conventions on Help ScreenBAckup Default DescriptionCDpstatus COuntersCounter Name Definition Valid Range RangeWhen to Use IPconfig IPconfigDIsconnect Configuring for Network Management Using Novell NetWare IPXUsing IP Following table explains the IP parametersParameter Default Value Definition MAnagers SHowManager Address IP or IPX Receive Alarms? CommandTo end your editing Displays the other devices that are using CDP protocol MEssageintervalNEighbor Table entry with ID 1 would now be a blank linePAssword Clear a passwordPIng Community namePOrt port ON/OFF REsetRObustness Security Configuration Parameter Definitions SEcure portSHowCLearManaging the Hub Configuring Security on All Twisted-Pair Ports Configuring Security on a Single PortEavesdrop Prevention, must be set to on Address Selection Authorized Showing the Security Configuration Clearing Security Violation IndicatorsSPeed new speed STatusStatus Information What It Means Network links, see the , Troubleshooting TEstlink16M will respond with the correct packet To sendPage Recommended Cables Cables and ConnectorsFollowing table shows PC connections to the RS-232 port Following table shows network connections to the hub Cables and ConnectorsCable Function Cable Type HP Product Number Twisted-Pair Cable/Connector Pin-Outs Pins 1 and 2 must be a twisted pairPins 3 and 6 must be a twisted pair Twisted-Pair Cable for Hub-to-Computer Network ConnectionRS-232 Connector and Cable Pin-Outs Installer for assistance with your cabling requirementsCable pin-out described below Minimum pin-out will function correctlyMinimum Cable Pinout for Ascii Console Connection SignalRS-232 Modem Cable Twisted-Pair Straight-Through Cable Twisted-Pair Cable Pin AssignmentsHub End MDI-X Specifications PhysicalElectrical EnvironmentalSpecifications ConnectorsElectromagnetic US Robotics Courier V.FC/V.34 Modem ConfigurationMegahertz XJ2288 Pcmcia card modem Intel 14.4EX Practical Peripherals PM288MT IISupra FAX Network Addressing Communication Between the Hub Network Management StationIPX Addressing for Novell NetWare IP Addresses for IP and Non-IP NetworksIPX Addressing Notes Globally Assigned IP Network AddressesCountry Device IP ConfigurationCompany Name/Address Using Bootp Bootp ProcessBootp Table File Entries Definitions of the table entry fieldsPage Backup Links How Backup Links WorkLimitations Backup LinksAdditional Notes Examples of Backup Links How the Backup Function WorksHub to a Switch Hub to a ServerT e G g e s t i o n Hub can monitor only one linkConfiguring a Backup Link Configuration/Installation SequenceIdentifying the Backup Link Indications of Backup Link ActivationReactivating the Primary Link Page Security Information Understanding Network SecurityHow Intruder Prevention Works How Eavesdrop Prevention WorksAuthorized MAC address Security InformationAssigning the Authorized MAC address Setting Inbound Security with Intruder Prevention Auto Port Disable Send AlarmSetting Outbound Security with Eavesdrop Prevention Security Information Page Safety and Regulatory Statements Mounting PrecautionsPower Precautions Temperature might exceed 45C 113FSettings to configure Equipment and should be easily accessibleSafety Information GroundingInformations concernant la sécurité Tible de causer des dommages à léquipementHinweise zur Sicherheit Considerazioni sulla sicurezza Consideraciones sobre seguridad Safety Information Japanese Regulatory Statements FCC Class a Statement for U.S.A. OnlyEuropean Community CanadaDeclaration of Conformity Index IndexDiagnosing with the LEDs … 2-2 diagnostic tests Late collision … 3-13 mounting the hub … LED description … Verifying hub operation … Page J3188-90001