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IOS Upgrade

I tried uploading an IOS image on my router though TFTP and i got the following error message: " ip_sanity_check: ip fragment, rejected. tftp_service_timeout: CONNECT RETRY! retry=17. tftp_process_packet: received OACK. tftp_process_packet: Change blksize to 1400. ip_sanity_check: ip fragment, rejected. ip_sanity_check: ip fragment, rejected " I'm not aware of any IP sanity check configuration on the router, what could be the problem?
  • Network Management
2 REPLIES
Silver

 It could be a layer 1 issues

 

It could be a layer 1 issues with the cables  or maybe the TFTP server.

 

Have you tried to copy something to another device to check if it is successful ? 

 

Regards , 

Cisco Employee

You may want to check if it

You may want to check if it is the TFTP server which is causing issue. Just to see if this is the TFTP, try to copy a empty file on the flash: and see if the error comes.

Using a different tftp server may be helpful.

-Thanks

Vinod

-Thanks Vinod **Rating Encourages contributors, and its really free. **
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