HP J3188A manual TEstlink, 16M will respond with the correct packet, To send

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		Managing the Hub
		Console Command Reference

TEstlink
	To run a test of the link between the hub and another IEEE 802.3
	device.

N o t e	The destination device must be able to send an IEEE 802.2 Test Response
	packet upon receipt of an IEEE 802.2 Test command packet. The HP Hub-
	16M will respond with the correct packet.
	You will be prompted for the 12-digit hexadecimal MAC address of the

	destination device. You will then be prompted for the number of test packets
	to send.
	If any errors are reported during this test, there may be a fault on the link being
	tested or on the destination device. For more information about testing
	network links, see the chapter 2, “Troubleshooting”.

Managing the Hub

3-21

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Contents HP J3188A Page HP 10Base-T Hub-16M J3188A Installation and Reference GuidePublication Number Iii HP 10Base-T Hub-16M J3188AFront of the Hub Back of the HubNetwork Connections FeaturesContents Cables and Connectors Vii Security InformationPage Installing the Hub Verify the hub operates correctly Installing and Configuring Your HubVerify included parts Connect the external transceiverTime Cord connected directly to the hub for proper operationPattern LEDRack or Cabinet Mounting Mount the hubTable Mounting Connect the hub to your network Connecting Devices to the Hub Connecting Hubs TogetherTwisted-Pair Cascade Connections ThinLAN Connections InstallingOhm terminator Interpreting LED Status Connecting the Hub-16M to a Fiber-Optic BackboneInterpreting Hub Status LEDs Following table provides LED port information Interpreting Port Status LEDsPage Troubleshooting Approaches TroubleshootingUsing a Checklist to Diagnose the Hub Troubleshooting Using a Checklist to Diagnose the HubProblem Solution LED Operation Hub will automatically recover after Troubleshooting LED OperationDiagnostic Tips Power CollHub Maintenance Tasks Testing the Hub OnlyClearing a Password for the Ascii Console Troubleshooting Hub Maintenance Tasks Running Connectivity TestsObtaining Firmware Enhancements Managing the Hub Setting up the Ascii ConsoleDirectly, Using a Serial Cable and a Terminal Remotely, Using TelnetManaging the Hub Starting the Console Remotely, Using a Modem and a TerminalSyntax Conventions on Help Screen Console Command ReferenceCommands are described in the rest of the chapter Example HE ST This displays help for the Status commandDefault Description BAckupRange CDpstatusCOunters Counter Name Definition Valid RangeIPconfig When to Use IPconfigDIsconnect Following table explains the IP parameters Configuring for Network ManagementUsing Novell NetWare IPX Using IPMAnagers SHow Parameter Default Value DefinitionCommand Manager Address IP or IPX Receive Alarms?To end your editing Table entry with ID 1 would now be a blank line Displays the other devices that are using CDP protocolMEssageinterval NEighborCommunity name PAsswordClear a password PIngREset POrt port ON/OFFRObustness SEcure portSHowCLear Security Configuration Parameter DefinitionsManaging the Hub Configuring Security on a Single Port Configuring Security on All Twisted-Pair PortsEavesdrop Prevention, must be set to on Address Selection Authorized Clearing Security Violation Indicators Showing the Security ConfigurationSTatus SPeed new speedStatus Information What It Means To send Network links, see the , TroubleshootingTEstlink 16M will respond with the correct packetPage 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 Twisted-Pair Cable for Hub-to-Computer Network Connection Twisted-Pair Cable/Connector Pin-OutsPins 1 and 2 must be a twisted pair Pins 3 and 6 must be a twisted pairMinimum pin-out will function correctly RS-232 Connector and Cable Pin-OutsInstaller for assistance with your cabling requirements Cable pin-out described belowSignal Minimum Cable Pinout for Ascii Console ConnectionRS-232 Modem Cable Twisted-Pair Cable Pin Assignments Twisted-Pair Straight-Through CableHub End MDI-X Environmental SpecificationsPhysical ElectricalConnectors SpecificationsElectromagnetic Modem Configuration US Robotics Courier V.FC/V.34Megahertz XJ2288 Pcmcia card modem Practical Peripherals PM288MT II Intel 14.4EXSupra FAX Communication Between the Hub Network Management Station Network AddressingGlobally Assigned IP Network Addresses IPX Addressing for Novell NetWareIP Addresses for IP and Non-IP Networks IPX Addressing NotesDevice IP Configuration CountryCompany Name/Address Bootp Process Using BootpDefinitions of the table entry fields Bootp Table File EntriesPage How Backup Links Work Backup LinksBackup Links LimitationsAdditional Notes Hub to a Server Examples of Backup LinksHow the Backup Function Works Hub to a SwitchHub can monitor only one link T e G g e s t i o nConfiguration/Installation Sequence Configuring a Backup LinkIndications of Backup Link Activation Identifying the Backup LinkReactivating the Primary Link Page Understanding Network Security Security InformationSecurity Information How Intruder Prevention WorksHow Eavesdrop Prevention Works Authorized MAC addressAssigning the Authorized MAC address Setting Inbound Security with Intruder Prevention Send Alarm Auto Port DisableSetting Outbound Security with Eavesdrop Prevention Security Information Page Mounting Precautions Safety and Regulatory StatementsEquipment and should be easily accessible Power PrecautionsTemperature might exceed 45C 113F Settings to configureGrounding Safety InformationTible de causer des dommages à léquipement Informations concernant la sécuritéHinweise zur Sicherheit Considerazioni sulla sicurezza Consideraciones sobre seguridad Safety Information Japanese Canada Regulatory StatementsFCC Class a Statement for U.S.A. Only European CommunityDeclaration 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