HP AdvanceStack Internet Router manual Virtual Configuration Register Bit Meanings

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Troubleshooting

Virtual Configuration Register Settings

6.Reboot the router. The new value takes effect. Configuration register changes take effect only when the router restarts, which occurs when you switch the power OFF and ON or when you enter the reload command.

Virtual Configuration Register Bit Meanings

The lowest four bits of the virtual configuration register (bits 3, 2, 1, and 0) form the boot field. (See table 4-4.) The boot field specifies a number in binary form. If you set the boot field value to 0, you must boot the operating system manually by entering the b command at the bootstrap prompt, as follows:

>b [tftp] flash filename

The b command options are as follows:

b—Boots the default system software from ROM

b flash—Boots the first file in Flash memory

b filename [host]—Boots from the network using a TFTP server

b flash [filename]—Boots the file filename from Flash memory

For more information about the command b [tftp] flash filename, refer to the Cisco IOS configuration guide and command reference publications.

If you set the boot field value to a value of 0x2 to 0xF, and a valid system boot command is stored in the configuration file, the router boots the system software as directed by that value. If you set the boot field to any other bit pattern, the router uses the resulting number to form a default boot filename for booting from the network using a TFTP server. (See table 4-5.)

Maintenance

4-10

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Contents HP AdvanceStack Internet Router Page Support is as close As the World Wide Web Additional HP Support Services Installation Guide HP AdvanceStack Internet RouterPublication Number Contents Configuring the HP AdvanceStack Internet Router Verifying Network Connectivity Getting More InformationCable Specifications Page HP AdvanceStack Internet Router Overview Hardware Features HP AdvanceStack Internet Router OverviewSoftware Features Includes switching CompressionOrdering Information Cables and AdaptersDocumentation and Software Cisco Systems Contact InformationCisco Systems, Inc West Tasman Drive San Jose, CA Tel Nets FaxInstallation Verifying Included PartsModem for remote access optional Installing the HP AdvanceStack Internet RouterRequired Tools and Parts Preparing to Connect to a NetworkIsdn BRI Cable Specifications S/T Cable Specification High-Capacitance Cable Low-Capacitance CableIsdn Connections Synchronous Serial Connections Typical DTE and DCE DevicesDevice Type Gender Typical Devices Or other DCE device EIA/TIA-232 Speed and Distance LimitationsData Rate Baud Distance Feet Distance Meters Console and Auxiliary Port Considerations U T I O NConsole Port Connections Installing the Module While you are installing the moduleCircuitry on the boards Installation Connecting to the Network Connecting to a WANConnecting the Console Terminal and Modem Connecting the Isdn BRI Port to an NT1 DeviceConnecting the Console Terminal Connecting a Modem to the Auxiliary Port What to Do After Installing the Router Hardware Booting the Router for the First Time ConfigurationConfiguring the Router for the First Time Begin to configure the routerConfiguring the HP AdvanceStack Internet Router Using the System Configuration Dialog Parity, and 2 stop bits On the console screenReflect the screen displays on your console OK? Enter an enable secret password Enter the enable and virtual terminal passwordsIsdn Switch Type Country Isdn Switch Type DescriptionConfiguring Ethernet or VG Interfaces Press Return or enter yes to configure serial portConfiguration Using Configuration Mode Prompt changes to the privileged Exec promptUsing AutoInstall Router will now boot with the configuration you enteredCisco IOS Software Basics Cisco IOS Modes of OperationMode Usage How to Enter the Mode Prompt Operation Interface serial 0 command toCisco IOS Operating Modes Getting Context-Sensitive Help Configuring Isdn Saving Configuration ChangesRouter config# username targetrouter password abc Enter the exit command to exit interface configuration mode Example Isdn Configuration Enter the exit command to exit global configuration modeExample Isdn Configuration Router# config termConfiguration Verifying Network ConnectivityGetting More Information Maintenance Reading the LEDsTroubleshooting LEDs on the Host Device Front PanelState Description LEDs on the HP AdvanceStack Internet Router Front Panel Isdn BRIUpgrading the Boot ROMs Recovering Lost PasswordsSignal to the router Boot ROMs and ignore NvramEnter the initialize command to initialize the router Ration Dialog appearsPasswords, if they are not encrypted, and proceed to step NvramAre different Press Ctrl-Z to exit configuration mode Or replace a password, proceed to and logReboot the router Configuration register value you set in stepVirtual Configuration Register Settings 0x2102 is a combination of settingsVirtual Configuration Register Bit Meanings Bit No.a Hexadecimal MeaningChanging Configuration Register Settings Virtual configuration register is stored in NvramExplanation of Boot Field Configuration Register Bits 00 to Boot Field Boot ProcessVirtual Configuration Register Bit Meanings Default Boot Filenames Boot field number, a hyphen, and the processor typeOverrides the default boot filename Action or Filename BitBit Address net host Baud BitEnabling Booting from Flash Memory Copying a Cisco IOS Image to Flash MemoryFollowing messages display System reboots using the new image in Flash memory Command reference publicationsBack of HP Switching Hub Inserting the HP Internet Router Module into an HP Remote 2C Router to Router Connections Console and Auxiliary Port Signals Pinouts Cable SpecificationsCable Specifications Identifying a Roll-Over CableConsole Port Signals and Pinouts Auxiliary Port Signals and Pinouts Figure A-2. Connecting the Auxiliary Port to a ModemSynchronous Serial Cable Assemblies and Pinouts EIA-530Figure A-3. EIA-530 Serial Cable Assembly 60 Pin Signal 25 Pin DTE DCEa Table A-4.EIA-530 DTE Cable Pinouts DB-60 to DB-25Direction EIA/TIA-232 60 Pin Signal Description Direction 25 Pin Table A-5. EIA/TIA-232 DCE Cable Pinouts DB-60 to DB-25Table A-6. EIA/TIA-232 DCE Cable Pinouts DB-60 to DB-25 CableEIA/TIA-449 60 Pin Signal Description Direction 37 Pin Table A-7. EIA/TIA-449 DTE Cable Pinouts DB-60 to DB-37Table A-8. EIA/TIA-449 DCE Cable Pinouts DB-60 to DB-37 Figure A-6. V.35 Cable Assembly Indicates DTE to DCE, and indicates DCE to DTE60 Pin Signal Description Direction 34 Pin Table A-9. V.35 DTE Cable Pinouts DB-60 to 34-PinTable A-10. V.35 DCE Cable Pinouts DB-60 to 34-Pin CableFigure A-7. X.21 Cable Assembly Cable Specifications 60 Pin Signal Description Direction 15 Pin Table A-11. X-21 DTE Cable Pinouts DB-60 to DB-15Table A-12. X.21 DCE Cable Pinouts DB-60 to DB-15 Isdn BRI Port and Cable Pinouts Table A-13. BRI Port RJ-45 PinoutRJ-45 TE b NT c Polarity Pin a Power Consumption HP J3138A SpecificationsPhysical EnvironmentalConnectors ElectromagneticIEC 950 1991 + A1, A2 / .EN60950 I 1992 + A1, A2 Safety and Regulatory Statements Safety InformationSafety and Regulatory Statements Informations concernant la sécuritéSicherheitssymbole Hinweise zur SicherheitConsiderazioni sulla sicurezza Simboli di sicurezzaConsideraciones sobre seguridad Símbolos de seguridadSafety Information Japanese StatementsRegulatory Statements No repairs can be done by the customer European Community CanadaUnshielded cables and EN55022 Page Index IndexIndex See also Isdn BRI Setup Page Page J3138-90003