3750 IOS FTP fails (No such device)

[Richard Rowe]

I have an older 3750 that is need of an IOS update so I can do SNMP v3 on it before we get funding for a replacement.  It is currently on 12.2(25)SEB1 and I'm trying to FTP over the MD 12.2.55-SE12.  The downside is that this switch is in dire need a reboot due to memory issues and it's in production so getting approval for that is spotty.  That being said, I've tried to FTP the IOS over several times and every time it's timed out I suspect due to the memory issues.  After several failed transfers, now it's not even accepting the command suggesting that either the local file (that doesn't show up with a directory command) is locked or the remote file doesn't exist (it does).  Output is (edited for privacy):

switch#copy ftp://user:pass@destinationIP/c3750-ipservicesk9-mz.122-55.SE12.bin flash:
Destination filename [c3750-ipservicesk9-mz.122-55.SE12.bin]?
Accessing ftp://user:pass@destinationIP/c3750-ipservicesk9-mz.122-55.SE12.bin...
%Error opening ftp://user:pass@destinationIP/c3750-ipservicesk9-mz.122-55.SE12.bin (No such device)

Plenty of free space and the same file doesn't show up in directory:

switch#dir /all
Directory of flash:/

2 -rwx 1516 Nov 30 2016 02:46:57 -05:00 vlan.dat
3 -rwx 6971725 Feb 28 1993 19:16:21 -05:00 c3750-ipservicesk9-mz.122-25.SEB1.bin
5 -rwx 18615 Mar 25 2019 11:48:31 -05:00 config.text
459 -rwx 3868 Mar 25 2019 11:48:31 -05:00 private-config.text
460 -rwx 1048 Mar 25 2019 11:48:32 -05:00 multiple-fs

32514048 bytes total (25515008 bytes free)

This is a stack of two 3750 switches.  No USB port to have easy file move.  Can anyone suggest why after several failed attempts I'm getting "(No such device)" errors?

[balaji.bandi]

Is the FTP Server able to ping and Reachable ? 

Since it is production, suggest to accept the maintenance window with Business.

Setup a Simple TFTP Server on laptop Download from HERE, connect to same Switch your Laptop with TFTP Server.

copy the new bin file to TFTP Server.

test make sure tftp working or not

#copy running tftp://ipaddressoflaptop   <-- if this is working as expected

check the running copied same folder as IOS.bin available)

Once that is confirmed.

#delete flash:c3750-ipservicesk9-mz.122-25.SEB1.bin    <<-- make sure do not reboot the switch at this stake.

#copy tftp://ipaddress/c3750-ipservicesk9-mz.122-55.SE12.bin  flash:

Once copied check with below command:

switch#dir /all

make sure you have copied IOS available in flash.

switch#verify /md5 flash:/c3750-ipservicesk9-mz.122-55.SE12.bin

change the boot variable 

boot system switch flash:c3750-ipservicesk9-mz.122-55.SE12.bin

wr

check show boot   <-- make sure verify new boot image 

reload   <-- connect console cable and capture all the logs in case something go wrong - you can do Xmodem also.

Hope this information helps you. Test and advise.

[Leo Laohoo]

Do not use the old method of "copy the BIN file" as a method of upgrading the IOS.
Use the automated command "archive download-sw tftp://<TFTP IP ADDRESS>/IOS_filename.tar".

[balaji.bandi]

Suggested one of the method, it all depends what method prefer and confort for you to upgrade.

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/64898-upgrade-3750-stack.html

[Deepak Kumar]

Hi,

I assuming that ftp server to reachable or system firewall is blocking.

Try with tftp server.

[Richard Rowe]

I appreciate the replies.  I think I may have confused my issue, so this is to clarify.  I know how to upgrade a 3750.  I've literally done it hundreds of times.

My problem is that after multiple attempts running the same command to copy the .bin file over to the 3750, due to it's memory/processor issues causing the transfers to time out - the same copy command returns a different result which is "(No such device)".  I've certainly verified that the FTP server is still offering the file (transferred it to another 3750 with the same command to be sure) and I've verified connectivity between the switch and the FTP server.  The only thing that has changed is the results which makes me think there's a now corrupted and hidden file on the switch from the previous transfer attempts.

Finding and eliminating that issue is my goal.