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Cisco 1700 manual

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Table of contents for the manual

  • Page 1

    B-1 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 APPENDIX B ROM Monitor This appendix describes the Cisco router R OM monitor (also called the bootstrap pr ogr am ). The R OM monitor f irmware runs when the router is po wered up or reset. The f irmw are helps to initialize the processor hardware and boot the operating system sof[...]

  • Page 2

    Appendix B ROM Monitor Entering the ROM Monitor B-2 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Follo w these steps to conf igure the router to boot up in R OM monitor mode the next time it is rebooted. T imesaver A break (system interrupt) is alw ays enabled for 60 seconds after the router reboots, regardless of its setting (o[...]

  • Page 3

    B-3 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Appendix B ROM Monitor ROM Monitor Commands ROM Monitor Commands Enter ? or help at the R OM monitor prompt to display a list of av ailable commands and options, as follo ws: rommon 1 > ? alias set and display aliases command boot boot up an external process break set/show/clea[...]

  • Page 4

    Appendix B ROM Monitor Command Descriptions B-4 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Command Descriptions T able B-1 describes commonly used R OM monitor commands. T able B-1 Common ROM Monit or Commands Command Description help or ? Displays a summary of all av ailable R OM monitor commands. -? Displays information abou[...]

  • Page 5

    B-5 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Appendix B ROM Monitor Disaster Recovery with TFTP Download T able B-2 describes the R OM monitor boot commands. For more information about the R OM monitor boot commands, refer to the Cisco IOS Configuration Guide and Cisco IOS Command Reference publications. Disaster Recovery wi[...]

  • Page 6

    Appendix B ROM Monitor Disaster Recovery with TFTP Download B-6 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Note The commands described in this section are case sensiti ve and must be entered exactly as sho wn in the lists. Required Variables The follo wing variables must be set with the commands sho wn before using the tftpdnl[...]

  • Page 7

    B-7 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Appendix B ROM Monitor Disaster Recovery with TFTP Download Using the TFTP Download Command The steps described in this section should be performed while in R OM monitor mode. Step 1 Use the appropriate commands to enter all the required v ariables and any optional v ariables. Ste[...]

  • Page 8

    Appendix B ROM Monitor Configuration Register B-8 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Note The -r v ariable is optional. Entering this variable do wnloads and boots the ne w software but does not sa ve the software to Flash. Y ou can then use the image that is in Flash the next time you enter the reload command in the C[...]

  • Page 9

    B-9 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Appendix B ROM Monitor Configuration Register This will change the virtual conf iguration re gister to the value specif ied. The v alue is always interpreted as hexadecimal. Entering confreg without an argument displays the contents of the virtual conf iguration register and a pro[...]

  • Page 10

    Appendix B ROM Monitor Console Download B-10 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Console Download Y ou can use console download, a R OM monitor function, to do wnload ov er the router console port either a software image or a conf iguration f ile. After do wnloading, the f ile is sav ed either to Flash memory or to main[...]

  • Page 11

    B-11 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Appendix B ROM Monitor Console Download Error Reporting Because the R OM monitor console do wnload uses the console to perform the data transfer , error messages are displayed on the console only when the data transfer is terminated. If an error does occur during a data transfer [...]

  • Page 12

    Appendix B ROM Monitor Debug Commands B-12 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Debug Commands Most R OM monitor debugging commands are functional only when Cisco IOS software has crashed or stopped. If you enter a deb ugging command and Cisco IOS crash information is not av ailable, you see the follo wing error message:[...]

  • Page 13

    B-13 Cisco 1700 Series Router Software Configuration Guide 78-5407-03 Appendix B ROM Monitor Debug Commands R28 = 0xffffffff R29 = 0xffffffff R30 = 0xffffffff R31 = 0xffffffff • frame —Display an indi vidual stack frame. • sysret —Display return information from the last booted system image. This information includes the reason for terminat[...]

  • Page 14

    Appendix B ROM Monitor Debug Commands B-14 Cisco 1700 Series Router Software Configuration Guide 78-5407-03[...]