Cisco Cisco IOS Software Release 12.0(2a)T1 Guia De Resolução De Problemas
software configuration register bit meanings, see Configuring the Software Configuration Register.
If your router keeps entering the ROMmon mode each time the system is restarted, it is probably due to the
setting of the configuration register. To verify the configured value of the configuration register, use the
confreg command as shown below:
setting of the configuration register. To verify the configured value of the configuration register, use the
confreg command as shown below:
rommon 2 > 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]:
As indicated by the output of the confreg command above, the configuration register is set to a value that
forces the router to go into the ROMmon mode each time it is reloaded or power−cycled. To make the router
boot automatically from a default Cisco IOS software image, change the configuration register value as shown
below:
forces the router to go into the ROMmon mode each time it is reloaded or power−cycled. To make the router
boot automatically from a default Cisco IOS software image, change the configuration register value as shown
below:
rommon 2 > 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]: y
enable "diagnostic mode"? y/n [n]:
enable "use net in IP bcast address"? y/n [n]:
disable "load rom after netboot fails"? y/n [n]:
enable "use all zero broadcast"? y/n [n]:
enable "break/abort has effect"? y/n [n]:
enable "ignore system config info"? y/n [n]:
change console baud rate? y/n [n]:
change the boot characteristics? y/n [n]: y
enter to boot:
0 = ROM Monitor
1 = the boot helper image
2−15 = boot system
[0]: 2
Configuration Summary
enabled are:
load rom after netboot fails
console baud: 9600
boot: image specified by the boot system commands
or default to: cisco2−C2600
do you wish to change the configuration? y/n [n]: n
You must reset or power cycle for new config to take effect
By doing this, you have changed the configuration register to a value that makes it look for a valid Cisco IOS
software image on startup and boot from the same. The router must now be reset.
software image on startup and boot from the same. The router must now be reset.
rommon 3 > reset
System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
Copyright (c) 1999 by cisco Systems, Inc.
TAC:Home:SW:IOS:Specials for info