07-03-2019 06:25 AM
I am not able to upload a new IOS file to a 3850 switch currently on 16.6.5.
TFTP transfer fails with:
%Error opening tftp://10.x.x.x/cat3k_caa-universalk9.16.06.06.SPA.bin (Timed out)
Copying from USB fails:
%Error reading usbflash0:/cisco/cat3k_caa-universalk9.16.06.06.SPA.bin (I/O error)
There is more than enough space on the flash. I tried different IOS version files with no success. Also tried different USB sticks and 2 different TFTP servers.
Solved! Go to Solution.
07-04-2019 02:05 AM
07-03-2019 06:36 AM
07-03-2019 06:44 AM
Hi Mark,
Yes, the USB is FAT32, and yes, I can ping the TFTP server.
I only have this problem on switches on version 16.6.5. I have no problem transferring the file to a switch on an older version like 3.6.8e
07-03-2019 07:00 AM
07-03-2019 10:17 AM
I just tried FTP and it worked. Which gives me one working option.
Not sure why TFTP is failing. I will upgrade to the new version and see if TFTP is still messed up.
Thanks for your suggestion
07-04-2019 12:36 AM
07-03-2019 07:17 AM
Hi,
Try defining the source interface for the TFTP.
"ip tftp source interface <interface name>"
07-03-2019 10:19 AM
I tried command previously and it didn't make any change for me
07-04-2019 02:05 AM
07-05-2019 05:37 AM
Yes, that worked. Thanks a lot Leo.
This bug is reported on 16.6.6, but it looks like it is happening on 16.6.5 as well.
07-06-2019 06:34 PM
@yuli7641 wrote:
This bug is reported on 16.6.6, but it looks like it is happening on 16.6.5 as well.
Would it be possible if a TAC Case is raised?
This would give TAC a sense of "visibility" on how many people are affected by this bug. Make sure TAC also updates the "known affected version" to include 16.6.5.
07-08-2019 09:07 AM
Yes, I did have a case regarding this. I will try to get them to update the affected versions
03-18-2020 03:21 AM
I found I had to remove and replace the USB 3 to 4 times on devices each time it looked like more had copied accross until it completed
10-21-2019 01:54 AM
I spent today more than 2h trying anything from IPS tshoot, to GPO review, to FW drops review, installing a VM into the mgmt. vlan of the network devices, playing with tftp helper, changing TFTP software and so on.
All 16.6.6 old devices are affected: 4300 ISR routers, 3650, 3850.
The newer 9300 running 16.6.6 is fine.
10-30-2019 03:47 PM
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