TFTP Image file tranfer - out of sequence

[fawad.alam]

Hi,

I am doing image upgrade on Catalyst 6509-E. During TFTP image transfer to sup-bootflash I always see !!!!!!!!!!!!!!!!!o!!!!!!!!!!  "o" out of sequence packet.

Although the image size seems to be correct at the end but there is always some "o" packets.

Is that bad? I am assuming not, but I haven't tried loading with the image after seeing this. Can someone elaborate, pease?

Thanks,

Fawad

[Leo Laohoo]

The only time I see the "0" during a transfer it could mean the following:

1.  Link or bandwidth between the TFTP server and the appliance is congested; and

2.  Not enough memory

[acampbell · Accepted solution]

Hi,

Found this info on the web (Not a Cisco Page)

TFTP Transfer Character Description
1) ! For net transfers an exclamation point indicates that the copy
process is taking place. Each exclamation point indicates the successful
transfer of ten packets (512 bytes each).

2) .. For net transfers a period indicates the copy process timed out. Many
periods in a row typically mean that the copy process may fail.

3) O For net transfers an uppercase O indicates a packet was received out
of order and the copy process may fail.

4) e For flash erasures, a lowercase e indicates a device is being erased.

5) E An uppercase E indicates an error. The copy process may fail.

So it looks like "O" means out of sequence packets during the TFTP transfer.

You could try verifying the MD5 after the transfer completes

verify /md5 sup-bootflash:IOS_IMAGE-FILE-NAME

If the MD5 hash equals the same hash from the downloads page on CCO you should be safe to use it.

Regards,
Alex.
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