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TFTP (Illegal protocol operation)

Peter Miller
Level 1
Level 1

Hello all,

I have been working with FreeNAS to do my TFTP service for me and it has worked great for the most part.  I do config backups after every change to the server just fine and sometimes in reverse, but the other day I was going a IOS upgrade from it to the router and it gives me this error after a few minutes into the transfer:

Destination filename [c2800nm-adventerprisek9_ivs_li-mz.151-3.T.bin]?

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

%Error writing tftp://<IP_ADDRESS>/c2800nm-adventerprisek9_ivs_li-mz.151-3.T.bin (Illegal protocol operation).....

I cannot understand why it would fail at this point the server has plenty of room and has worked in the past. This error happens both in downloading and uploading IOS images.  I eventually used my trusty TFTP32d and it worked, but this server should work fine.

Anyone have an idea what it is erroring on?

Thank you in advanced

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