Appendix C Configuration Register Information
Setting the Configuration Register While Running Cisco IOS
09Do not use secondary bootstrap
08Break disabled
07OEM disabled
06Ignore configuration disabled
05Fast boot disabled
04Fan boot disabled
If the prompt is “rommon1”, the confreg command displays the virtual configuration register currently in effect. It includes a description of the bits. See the following sample output:
rommon 1 > confreg
Configuration Summary enabled are:
load rom after netboot fails console baud: 9600
boot: the ROM Monitor
Do you wish to change the configuration? y/n [n]
Setting the Configuration Register While Running Cisco IOS
The configuration register can be set in the configuration mode with the
Router# configure terminal
Enter configuration commands, one per line. End with CNTRL/Z.
Router(config)#end
Router#
Setting the Configuration Register While Running ROM Monitor
If the prompt is “>”, the o/r0x value command sets the configuration register. See the following sample output:
>o/r 0x2102
>
If the prompt is “rommon1”, the confreg command sets the configuration register. It prompts the user about each bit. See the following sample output:
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| Confiuration Summary |
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| enabled are: |
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| load rom after netboot fails |
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| console baud: 9600 |
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| boot: the ROM Monitor |
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| do you | wish to change the configuration | y/n | [n]: | y | ||
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| enable | “diagnostic mode”? y/n | [n]: | n |
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| enable | “use net in IP bcast address”? y/n | [n]: | n | |||
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| disable | “use rom after netboot fails”? y/n | [n]: | n | |||
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| enable | “use all zero broadcast”? y/n | [n]: | n |
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| enable | “break/abort has effect”? y/n | [n]: | n |
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| Cisco 7201 Installation and Configuration Guide |
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