IOS file copy gets stuck in cisco 3850 switch

[nagasheshu.2014]

Hi All,

I am trying to copy IOS cat3k_caa-universalk9.SPA.03.06.06.E.152-2.E6.bin from TFTP server (windows  2008 server) or another 3850 switch (which is directly connected to the 3850 switch in which I am copying), is gets stuck after some time (say probably after 60%). No error or anything appear on screen, its just putty goes inactive.

I tried removing execution timeout, no luck.

any suggestions please?

its a 3850 stack switch and has 2 GB of memory free, IOS file i am copying is of 284 Mb.

Thanks in advance,

Nagasheshu.

[Julio E. Moisa]

Hi

TFTP does not support more than 30 - 32 Mb of transfer, I suggest to use FTP instead. 

Hope it is useful

:-)

[nagasheshu.2014]

Hi Julio,

This is the second 3850 stack switch IOS upgrade I am doing, and the first one did accept same file over TFTP. :-)

Thanks,

Nagasheshu.

[Leo Laohoo]

What TFTP sofware is running on the server.  

Try using TFTPd32/TFTPd64 (it's free).

[rasmus.elmholt]

Hi

I Would recommend using SCP instead, secure and more reliable than TFTP.
I use Putty PSCP to transfer files to the switch

!Enable SCP on the switch
ip scp enable

!Transfer file from the computer to the swtich
pscp -scp localfile.bin username@<switchip>: