Following table shows network connections to the hub | HP J3188A

Cables and Connectors

Cables and Connectors

Recommended Cables

The following table shows network connections to the hub.

Cable Function	Cable Type		HP Product Number

Network connections to the hub:

Hub to end node	Twisted-pair	92268A	(4 pair, 4 meters)
connection or hub to	“straight-through”	92268B	(4 pair, 8 meters)
hub connection	cable	92268C (4 pair, 16 meters)
using the MDI/MDI-		92268D	(4 pair, 32 meters)
X switch		92268N (4 pair, 300 meters)*

* The maximum total length of any twisted-pair segment is 100 meters.

You can contact your HP authorized dealer or call HP at 1-800-538-8787 to order these parts.

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HP J3188A manual Following table shows network connections to the hub, Cables and Connectors

Contents

HP J3188A Page Installation and Reference Guide HP 10Base-T Hub-16M J3188A Publication Number Back of the Hub HP 10Base-T Hub-16M J3188AFront of the Hub Iii Features Network Connections Contents Cables and Connectors Security Information ViiPage Installing the Hub Connect the external transceiver Installing and Configuring Your HubVerify included parts Verify the hub operates correctly Cord connected directly to the hub for proper operation Time LED Pattern Mount the hub Rack or Cabinet Mounting Table Mounting Connect the hub to your network Connecting Devices to the Hub Connecting Hubs TogetherTwisted-Pair Cascade Connections Installing ThinLAN Connections Ohm terminator Connecting the Hub-16M to a Fiber-Optic Backbone Interpreting LED Status Interpreting Hub Status LEDs Interpreting Port Status LEDs Following table provides LED port informationPage Troubleshooting Troubleshooting Approaches Using a Checklist to Diagnose the Hub Troubleshooting Using a Checklist to Diagnose the HubProblem Solution LED Operation Power Coll Troubleshooting LED OperationDiagnostic Tips Hub will automatically recover after Hub Maintenance Tasks Testing the Hub OnlyClearing a Password for the Ascii Console Troubleshooting Hub Maintenance Tasks Running Connectivity TestsObtaining Firmware Enhancements Setting up the Ascii Console Managing the Hub Directly, Using a Serial Cable and a Terminal Remotely, Using TelnetManaging the Hub Remotely, Using a Modem and a Terminal Starting the Console Example HE ST This displays help for the Status command Console Command ReferenceCommands are described in the rest of the chapter Syntax Conventions on Help Screen BAckup Default Description Counter Name Definition Valid Range CDpstatusCOunters Range IPconfig When to Use IPconfigDIsconnect Using IP Configuring for Network ManagementUsing Novell NetWare IPX Following table explains the IP parameters Parameter Default Value Definition MAnagers SHow Command Manager Address IP or IPX Receive Alarms?To end your editing NEighbor Displays the other devices that are using CDP protocolMEssageinterval Table entry with ID 1 would now be a blank line PIng PAsswordClear a password Community name REset POrt port ON/OFFRObustness Security Configuration Parameter Definitions SEcure portSHowCLear Managing the Hub Configuring Security on a Single Port Configuring Security on All Twisted-Pair PortsEavesdrop Prevention, must be set to on Address Selection Authorized Showing the Security Configuration Clearing Security Violation Indicators SPeed new speed STatus Status Information What It Means 16M will respond with the correct packet Network links, see the , TroubleshootingTEstlink To sendPage Cables and Connectors Recommended CablesFollowing table shows PC connections to the RS-232 port Cables and Connectors Following table shows network connections to the hubCable Function Cable Type HP Product Number Pins 3 and 6 must be a twisted pair Twisted-Pair Cable/Connector Pin-OutsPins 1 and 2 must be a twisted pair Twisted-Pair Cable for Hub-to-Computer Network Connection Cable pin-out described below RS-232 Connector and Cable Pin-OutsInstaller for assistance with your cabling requirements Minimum pin-out will function correctly Signal Minimum Cable Pinout for Ascii Console ConnectionRS-232 Modem Cable Twisted-Pair Cable Pin Assignments Twisted-Pair Straight-Through CableHub End MDI-X Electrical SpecificationsPhysical Environmental Connectors SpecificationsElectromagnetic Modem Configuration US Robotics Courier V.FC/V.34Megahertz XJ2288 Pcmcia card modem Practical Peripherals PM288MT II Intel 14.4EXSupra FAX Network Addressing Communication Between the Hub Network Management Station IPX Addressing Notes IPX Addressing for Novell NetWareIP Addresses for IP and Non-IP Networks Globally Assigned IP Network Addresses Device IP Configuration CountryCompany Name/Address Using Bootp Bootp Process Bootp Table File Entries Definitions of the table entry fieldsPage Backup Links How Backup Links Work Backup Links LimitationsAdditional Notes Hub to a Switch Examples of Backup LinksHow the Backup Function Works Hub to a Server T e G g e s t i o n Hub can monitor only one link Configuring a Backup Link Configuration/Installation Sequence Identifying the Backup Link Indications of Backup Link Activation Reactivating the Primary Link Page Security Information Understanding Network Security Authorized MAC address How Intruder Prevention WorksHow Eavesdrop Prevention Works Security Information Assigning the Authorized MAC address Setting Inbound Security with Intruder Prevention Auto Port Disable Send Alarm Setting Outbound Security with Eavesdrop Prevention Security Information Page Safety and Regulatory Statements Mounting Precautions Settings to configure Power PrecautionsTemperature might exceed 45C 113F Equipment and should be easily accessible Safety Information Grounding Informations concernant la sécurité Tible de causer des dommages à léquipement Hinweise zur Sicherheit Considerazioni sulla sicurezza Consideraciones sobre seguridad Safety Information Japanese European Community Regulatory StatementsFCC Class a Statement for U.S.A. Only Canada Declaration of Conformity Index Index Diagnosing with the LEDs … 2-2 diagnostic tests Late collision … 3-13 mounting the hub … LED description … Verifying hub operation … Page J3188-90001