topic Re: ftp problem on Linux / Redhat in Operating System - Linux

ftp problem on Linux / Redhat

James George_1 — Mon, 12 Nov 2007 21:37:47 GMT

Hi

We have an ftp script in place to ftp files from the HP UX itanium Production server to the blade server which runs Linux Redhat.
The ftp drops intermittently . Ping works fine and so is the network connections. I have other 5 blades in the same Enclosure and all of them ( linux) works fine except 2 . I compared the n/w configs and everything looks ok to me ( Iam new in Linux !!)

Could some one help me . Point assured !!

Rgds/ James George

Re: ftp problem on Linux / Redhat

Vitaly Karasik_1 — Tue, 13 Nov 2007 02:47:24 GMT

1) what about manual transfer via ftp?
2) does ftp drop for small files too?
3) what about transfer via scp - the same problem?

Re: ftp problem on Linux / Redhat

Ivan Ferreira — Tue, 13 Nov 2007 06:45:59 GMT

>>> Ping works fine and so is the network connections.

Ping sends very small size packets. You should try other testings, as said above, manually sending the files.

For example, if you have negotiation problems, ping will work but the transfer will be hang/dropped if you send large files. Check your data transfer rate.

Verify your FTP server log files to see if there is a clue.

Re: ftp problem on Linux / Redhat

Steven E. Protter — Tue, 13 Nov 2007 08:51:16 GMT

Suggestions,

1) Large packet pings.
2) SFTP, different protocol, different timeout.
3) vsftp logging
4) dmesg on all servers involved.
5) run tcpdump port 21 or for hostname and look at the results.

SEP

Re: ftp problem on Linux / Redhat

skt_skt — Tue, 13 Nov 2007 14:30:57 GMT

Any idea what was the exact error? Is that can be reproduced manually and get the exact errors?

what is the linux && kernel versions?

I had observed known ftp issues with 2.4.21-47.ELsmp/RHEL3