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jc12
Beginner

Collecting core dump on CISCO 4451 router - TFTP timing out

I'm trying to copy a core dump from my Cisco 4451 router, but it keeps timing out when the file is almost done being transferred.  

> copy bootflash:/core/<core dumbe> tftp: < server IP>

> timeout error occurs once the file is almost complete.

 

Is there something that can be done to prevent this or is the file just too big and I need to get someone to console in and copy to a usb device or something?

 

 

 

1 ACCEPTED SOLUTION

Accepted Solutions

Hello,

 

not sure which TFTP server software you are using, but try the Solarwinds server, maybe it is the software that causes your problem...

 

https://www.solarwinds.com/free-tools/free-tftp-server

View solution in original post

7 REPLIES 7
Leo Laohoo
VIP Community Legend

Archive the files in the coredump folder and then export it out.

I don't suppose you could point me in the right direction of some documents for doing this on the router.

 

Leo Laohoo
VIP Community Legend


@jc12 wrote:

I don't suppose you could point me in the right direction of some documents for doing this on the router.


archive tar /create <FILENAME>.tar bootflash:/core

All this did was may a bigger file, which is the issue I believe.

Hello,

 

not sure which TFTP server software you are using, but try the Solarwinds server, maybe it is the software that causes your problem...

 

https://www.solarwinds.com/free-tools/free-tftp-server

View solution in original post

Well Solarwinds worked!  I was using 3CDaemon.  Was going to try the blocksize next but didn't need to this time.

Georg Pauwen
VIP Expert

Hello,

 

you could try and change the TFTP blocksize. Try different values...

 

4451(config)#ip tftp blocksize