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Cisco 3900 series router stuck in boot loop

ethan.elliott83
Level 1
Level 1

Good morning,

 

 I am struggling to figure out why I can't got this router out of a boot loop. I've concluded it has to do with the memory, but in don't know whether it's a hardware or software issue. Reseated the ram already. Attached and in the comments is a copy of the boot process.


Any input would be appreciated

5 Replies 5

balaji.bandi
Hall of Fame
Hall of Fame

something gone wrong ?

 

is this after upgrade or new install ?  if possible try lower version or different code

 

post complete boot process in text file as attached.

BB

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Leo Laohoo
Hall of Fame
Hall of Fame

The photos focus too much on the monitor instead of the output. 

Can you log the output and attach to the thread?

Sorry about that, it's on a work computer and I'm not allowed to plug it in for security reasons. I'll get better ones tomorrow


@ethan.elliott83 wrote:

it's on a work computer and I'm not allowed to plug it in for security reasons.


Configure terminal logging on Putty. 

Reboot the router.

Export the logged file.  

Done.  

The first attached file has a pretty clear message about a machine check and the third attached file has a pretty clear message about a bus error. If there is a service contract for this machine it would be best to open a case with Cisco TAC.

HTH

Rick