How to convert EWC?? (transfer command failed (Error 143))

[JustTakeTheFirstStep]

I want to convert 9115 LAP to EWC.

But I am getting error 143 while uploading the TFTP image.

Cables are no problem.

I tried versions 17.08.01 , 17.03.04c , 16.12.07 .

What the hell is the problem?

[marce1000]

        - FYI : https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvt44832

 M.

[JustTakeTheFirstStep]

There seems to be enough flash space.

C9800-AP-iosxe-wlc.bin
214 MB

Used Available

457.8M

[marce1000]

   - Check the tftp server's logs after the failed transfer , or if available on the command line -> use another transfer protocol such as ftp or scp.

 M.

[JPavonM · Accepted solution]

Or try to use another TFTP server, some of them used to close the connection after some short time.

[marce1000 · Accepted solution]

  - Indeed  , sometimes you then need to increase tftp timeout on the tftp server (if available)

 M.

[JustTakeTheFirstStep · Accepted solution]

I used 3cdaemon as my TFTP server.

I have successfully uploaded the image using tftpd64.

These issues occur with the 9115.

On the 9130 it was not a problem.