ISR 819 - Rommon mode

[RRFS578780]

I have several ISR 800 routers, where they are entering rommon mode.

I would like to know if anyone has been through this and how it resolved?

I did IOS recovery in some and it resolved, but I have many routers, and I would not like to avoid this type of problem in others.

One router I was seeing is the ISR819, it also went into rommon mode, when I try to point the image again, it gives an error (MONLIB).

IOS: 15.5.3.M4A

Is there a bug for this version that makes it go into rommon?

[Leo Laohoo]

Check the config registry?

Post the entire boot-up process so we can have a look.

[balaji.bandi]

There may be couple of reasons as below :

- Configuration register forced the router to go to ROMmon mode during the boot process

- Corrupt image (IOS) on Flash

- Router was unable to find the IOS

- IOS on a router has been (accidentally) deleted from flash

post the complete boot process.

[RRFS578780]

There is a bug regarding this error.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuy50465