entered wrong confreg...router doesn't boot up

[m.matteson]

I entered in a wrong config register in ROMMON and now my router doesn't boot. when it does it get all strange characters. help? thanks. i reboot and send a break but i still get random characters

[spremkumar]

hi

AFAIK if u dont remember the config register value which you have set,u can try out with different baud speed rate.

BTW in which model of cisco box you are trying to recover ?

regds

[m.matteson]

thank guys that seemed to be the problem, i changed it to a higher baud (192). out of curiousity why would adding a wrong confreg change the baud?

[Richard Burts · Accepted solution]

Michael

The reason that a wrong confreg can change the baud of the console connection is because there are bits in the configuration register (used to be 2 bits now it can be 3 bits) that control the speed of the console connection. If your wrong confreg happens to change one of those bits then you change the baud of the console.

HTH

Rick

[m.matteson]

Rick

Thanks for your awesome answer. That defenatly helped. I just started to look around cisco's site for information about what you said. I found this - http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a008022493f.shtml

Everything you said was right there. Guess I'll have to search harder next time - hopefully there will be no next time. haha

-Mike

[frenzeus]

Hi,

u've most probably changed the baud rate on ur router. No worries, try changing the baud rate on ur hyper terminal. In fact, try changing the various rate until u see "normal" characters.

Hope it helps.