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Setting the Configuration Register While Running Cisco IOS
( D R A F T L A B E L ) A L P H A D R A F T - C I S C O C O N F I D E N T I A L
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:
Setting the Configuration Register While Running Cisco IOS
The configuration register can be set in the configuration mode with the config-register 0x<value>
command. See the following sample output:
Setting the Configuration Register While Running ROM Monitor
If the prompt is ">", the or0x<value> command sets the configuration register. See the following sample
output:
If the prompt is "rommon1", the confreg command sets the configuration register. It prompts the user
about each bit. See the following sample output:
Cisco 7206 Installation and Configuration Guide
B-6
09
Do not use secondary bootstrap
08
Break disabled
07
OEM disabled
06
Ignore configuration disabled
05
Fast boot disabled
04
Fan boot disabled
03-00
Boot to ROM monitor
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
Router# config t
Enter configuration commands, one per line. End with CNTRL/Z.
Router(config)#config-register 0x2142
Router(config)#end
Router#
%SYS-5-CONFIG_I: Configured from console by console
>o/r 0x2102
>
rommon 1 > confreg
Confiuration Summary
enabled are:
load rom after netboot fails
console baud: 9600
boot: the ROM Monitor
do you wish to change the configuration y/n
enable
"diagnostic mode"? y/n
enable
"use net in IP bcast address"? y/n
disable
"use rom after netboot fails"? y/n
enable
"use all zero broadcast"? y/n
enable
"break/abort has effect"? y/n
Appendix B
[n]
[n]:
y
[n]:
n
[n]:
n
[n]:
n
[n]:
n
[n]:
n
Configuration Register Information
OL-5102-02
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