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Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member


Need to change configuration so that I no longer have rommon> prompt at sup engine.


Re: Rommon

The switch can go into ROMmon mode for any of these reasons:

The boot variables are not set correctly to boot the switch from a valid software image.

The configuration register is not set correctly.

The software image on the bootflash: is missing or corrupted, or there is a software upgrade failure.

have a look at this link

HTH, rate if it does


New Member

Re: Rommon

Went into register to change to 0x2102 and resolved--thanks!

Cisco Employee

Re: Rommon

Which OS you are running? Is it CatOS or IOS.

There are two things that you can check and change.

1. Config-regsiter should be 0x2102

For IOS, once the switch is booted Check the " Show version".It will list you config register at the end. Do the following:

Conf t

config-register 0x2102

For CatOS, Check "show boot", and it will list the config register there.Do the following

console(enable)> Set config-register 0x2102

2. Check the bootpath for the switch boot. makre sure that it is configured properly and the files name is listed there. use " show boot " for the same.

3. Make sure that a valid image file exist in the flash or CF card and the bootpath is set accordingly.

Please see the docs below:

HTH,please rate if it does.

-amit singh