TFTP how to? - 3com 4200G

[IE-TopModel]

3com 4200G :

I want to save the configuration by "Administration ... Backup configuration ...", but how does TFTP work? Where can I put the ftp-username & password?   I have a FTP server running on another machine; when I give that IP address, it starts "backup configuration software", but then a dialog opens "transfer file error".

Thanks!

[Fredrik Lönnman]

You dont need to use username and password when using TFTP, maybe you have mixed up TFTP with FTP?

Please install a TFTP server on your machine and try again.

[IE-TopModel]

yes, understood that now, when looking into software on this page:

  http://h17007.www1.hp.com/us/en/support/converter/index.aspx?productNum=JE016A

  E4200_24G_Switch_v.1.05_3Com_TFTP_Server_1.05.exe

Have done that now.

Installed it on a windows machine which is connected to that switch.

This operation backs up the saved configuration file of this device to the TFTP server.

[...]

IP address: 192.168.x.y

Remote filename: config.cfg

Unfortunately: Still the same behaviour.

Transfer File error!

any ideas what to try next?

[Fredrik Lönnman]

Do you have real connectivity between the switch and tftp server?

Dont know what TFTP server you use, but do you see any logs in it?

This is a great TFTP server to use: http://tftpd32.jounin.net/

[IE-TopModel]

> what TFTP server you use

That was not the problem. http://tftpd32.jounin.net/ and the "3com TFTP server E4200_24G_Switch_v.1.05_3Com_TFTP_Server_1.05.exe" actually BOTH work now.

The answer was hidden somewhere else :-)

"Administration ...  Backup configuration ..." only worked after I had pressed "Save configuration" for the first time, which was "invisible" because it was not hidden in a sub-menu, but in at the top level. Hidden in plain sight, so to say.:

"Unit1 save configuration flash:/3comoscfg.cfg successfully"

[Looks as if the configuration was never saved before, somehow strange behaviour, isn't it?]

Now it works flawlessly to store the configuration remotely:

• Backup from:     Unit ID 1    4200G
• Saved to the TFTP server:      IP Address192.168.42.155   Remote filename:cfg.cfg
• Backup complete.

Yippieh. Thank you very much!

[oso_togari]

Hi

im on - 3Com Switch 4200G 48-Port Software Version 3Com OS V3.01.00s56 -

i know, a little older :-)

but i have the same error...no matter what tftp server use.

is there any way to do it without upgrading OS?

regards

[ISoliman]

make sure to disable any firewall on the machine having tftp server as it sometimes block the connection, and try pinging from both sides

[oso_togari]

no firewall on any side....

as another clue, using telnet to connect to the switch...

 tftp 192.168.30.10 get hello.txt       -->   works fine!

but

 tftp 192.168.30.10 put 20120322.cfg      --> fails

also

tftp 192.168.30.10 put unit1>flash:/20120322.cfg and other combinations.

regards

[Fredrik Lönnman]

Since get works but not put, are you sure you have got write permissions on the tftp server?

[oso_togari]

solved.... im using a tftp server in linux, and in the server config i have to add a "-c" option in the daemon startup to accept files that not exists in the destiny. regards