HP AdvanceStack Internet Router Changing Configuration Register Settings, Boot Field Boot Process

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Troubleshooting

Virtual Configuration Register Settings

Changing Configuration Register Settings

Take the following steps to change the configuration register while running the Cisco IOS software:

1.Enter the enable command and your password to enter privileged mode:

Router> enable

Password:

Router#

2.Enter the configure terminal command at the privileged EXEC prompt (Router#):

Router# configure terminal

3.To set the contents of the configuration register, enter the configuration command config-registervalue, where value is a hexadecimal number preceded by 0x (see table 4-3 and table 4-4):

config-register 0xvalue

(The virtual configuration register is stored in NVRAM.)

Table 4-4.

Explanation of Boot Field (Configuration Register Bits 00 to 03)

 

 

Boot Field

Boot Process

 

 

0x0

Stops the boot process in the ROM monitor

0x1

Stops the boot process in the boot ROM monitor

0x3–0xF

Specifies a default filename for booting over the network from a TFTP

 

server

 

Enables boot system commands that override the default filename for

 

booting over the network from a TFTP server

0x2

Full boot process, which loads the Cisco IOS image from Flash memory

 

 

4.Press Ctrl-Zto exit configuration mode. The new settings will be saved to memory; however, the new settings do not take effect until the system software is reloaded by rebooting the router.

5.To display the configuration register value currently in effect and the value that will be used at the next reload, enter the show version EXEC command. The value displays on the last line of the screen display:

Configuration register is 0x142 (will be 0x102 at next reload)

Maintenance

4-9

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Contents HP AdvanceStack Internet Router Page Support is as close As the World Wide Web Additional HP Support Services HP AdvanceStack Internet Router Installation GuidePublication Number Contents Verifying Network Connectivity Getting More Information Configuring the HP AdvanceStack Internet RouterCable Specifications Page HP AdvanceStack Internet Router Overview HP AdvanceStack Internet Router Overview Hardware FeaturesSoftware Features Compression Includes switchingCables and Adapters Ordering InformationTel Nets Fax Documentation and SoftwareCisco Systems Contact Information Cisco Systems, Inc West Tasman Drive San Jose, CAVerifying Included Parts InstallationPreparing to Connect to a Network Modem for remote access optionalInstalling the HP AdvanceStack Internet Router Required Tools and PartsIsdn Connections Isdn BRI Cable Specifications S/T CableSpecification High-Capacitance Cable Low-Capacitance Cable Device Type Gender Typical Devices Synchronous Serial ConnectionsTypical DTE and DCE Devices Data Rate Baud Distance Feet Distance Meters Or other DCE deviceEIA/TIA-232 Speed and Distance Limitations U T I O N Console and Auxiliary Port ConsiderationsConsole Port Connections Circuitry on the boards Installing the ModuleWhile you are installing the module Installation Connecting to a WAN Connecting to the NetworkConnecting the Isdn BRI Port to an NT1 Device Connecting the Console Terminal and ModemConnecting the Console Terminal Connecting a Modem to the Auxiliary Port What to Do After Installing the Router Hardware Configuration Booting the Router for the First TimeConfiguring the HP AdvanceStack Internet Router Configuring the Router for the First TimeBegin to configure the router Using the System Configuration Dialog Reflect the screen displays on your console Parity, and 2 stop bitsOn the console screen OK? Enter the enable and virtual terminal passwords Enter an enable secret passwordCountry Isdn Switch Type Description Isdn Switch TypePress Return or enter yes to configure serial port Configuring Ethernet or VG InterfacesConfiguration Prompt changes to the privileged Exec prompt Using Configuration ModeRouter will now boot with the configuration you entered Using AutoInstallCisco IOS Modes of Operation Cisco IOS Software BasicsCisco IOS Operating Modes Mode Usage How to Enter the Mode Prompt OperationInterface serial 0 command to Getting Context-Sensitive Help Saving Configuration Changes Configuring IsdnRouter config# username targetrouter password abc Enter the exit command to exit interface configuration mode Enter the exit command to exit global configuration mode Example Isdn ConfigurationRouter# config term Example Isdn ConfigurationGetting More Information ConfigurationVerifying Network Connectivity Reading the LEDs MaintenanceState Description TroubleshootingLEDs on the Host Device Front Panel Isdn BRI LEDs on the HP AdvanceStack Internet Router Front PanelRecovering Lost Passwords Upgrading the Boot ROMsRation Dialog appears Signal to the routerBoot ROMs and ignore Nvram Enter the initialize command to initialize the routerAre different Passwords, if they are not encrypted, and proceed to stepNvram Configuration register value you set in step Press Ctrl-Z to exit configuration modeOr replace a password, proceed to and log Reboot the routerBit No.a Hexadecimal Meaning Virtual Configuration Register Settings0x2102 is a combination of settings Virtual Configuration Register Bit MeaningsBoot Field Boot Process Changing Configuration Register SettingsVirtual configuration register is stored in Nvram Explanation of Boot Field Configuration Register Bits 00 toVirtual Configuration Register Bit Meanings Action or Filename Bit Default Boot FilenamesBoot field number, a hyphen, and the processor type Overrides the default boot filenameBaud Bit Bit Address net hostCopying a Cisco IOS Image to Flash Memory Enabling Booting from Flash MemoryFollowing messages display Command reference publications System reboots using the new image in Flash memoryBack of HP Switching Hub Inserting the HP Internet Router Module into an HP Remote 2C Router to Router Connections Cable Specifications Console and Auxiliary Port Signals PinoutsIdentifying a Roll-Over Cable Cable SpecificationsConsole Port Signals and Pinouts Figure A-2. Connecting the Auxiliary Port to a Modem Auxiliary Port Signals and PinoutsEIA-530 Synchronous Serial Cable Assemblies and PinoutsFigure A-3. EIA-530 Serial Cable Assembly Direction 60 Pin Signal 25 Pin DTE DCEaTable A-4.EIA-530 DTE Cable Pinouts DB-60 to DB-25 EIA/TIA-232 Table A-5. EIA/TIA-232 DCE Cable Pinouts DB-60 to DB-25 60 Pin Signal Description Direction 25 PinCable Table A-6. EIA/TIA-232 DCE Cable Pinouts DB-60 to DB-25EIA/TIA-449 Table A-7. EIA/TIA-449 DTE Cable Pinouts DB-60 to DB-37 60 Pin Signal Description Direction 37 PinTable A-8. EIA/TIA-449 DCE Cable Pinouts DB-60 to DB-37 Indicates DTE to DCE, and indicates DCE to DTE Figure A-6. V.35 Cable AssemblyTable A-9. V.35 DTE Cable Pinouts DB-60 to 34-Pin 60 Pin Signal Description Direction 34 PinCable Table A-10. V.35 DCE Cable Pinouts DB-60 to 34-PinFigure A-7. X.21 Cable Assembly Cable Specifications Table A-11. X-21 DTE Cable Pinouts DB-60 to DB-15 60 Pin Signal Description Direction 15 PinTable A-12. X.21 DCE Cable Pinouts DB-60 to DB-15 RJ-45 TE b NT c Polarity Pin a Isdn BRI Port and Cable PinoutsTable A-13. BRI Port RJ-45 Pinout Environmental Power ConsumptionHP J3138A Specifications PhysicalIEC 950 1991 + A1, A2 / .EN60950 I 1992 + A1, A2 ConnectorsElectromagnetic Safety Information Safety and Regulatory StatementsInformations concernant la sécurité Safety and Regulatory StatementsHinweise zur Sicherheit SicherheitssymboleSimboli di sicurezza Considerazioni sulla sicurezzaSímbolos de seguridad Consideraciones sobre seguridadStatements Safety Information JapaneseRegulatory Statements No repairs can be done by the customer Unshielded cables and EN55022 European CommunityCanada Page Index IndexIndex See also Isdn BRI Setup Page Page J3138-90003