FTP Issues

[EzyStvy]

Mind if I SCREAM first

Six very very similar servers running 2003.

Five do nothing but host SQL databases.
These five - run an app my developers made that:
1) Backup the db's
2) Zip them up
3) FTP the zipped files to server #6

The three week old (newest of the five) servers is having issues. FTP from a CMD prompt worked for two weeks and then quite for five days. This morning it worked.

I spent all day yesterday chatting with the data center techs. They were leaning towards blaming server #6 to be the culprit. (permissions etc) Hopefully today I will be successful when they attempt to answer the questions-> Why do the other 4 servers Not have the same problem.

Related to the issue: the problem server takes 30 minutes to transfer a file that the other server can do in 7 minutes.

Yesterday, they had me download an app called WinMRT which looks like a fancy tracert type app. They thought they detected an issue with a switch where server #6 is located...

Anyone have any thoughts on this? Thanks in advance.

[Force Flow]

The only thing I can think of is that you might have more than one device with the same IP address. Other than that, no idea with the limited details. It sounds like a more involved technical issue.

[MaxRat]

got a spare NIC card to try...?

That would be my guess is that the problem rig has a semi-booger NIC

[EzyStvy]

Hello, I would like to change the speed and duplex settings at the switch. Currently I see the switch is set to 100/Full duplex, and the server is set to Auto negotiate. Currently, I see the FCS-Err, and the Rcv-Err increasing at the switch, which very well may be disrupting traffic. Why I believe this may be related to Speed and Duplex: because the errors are aligning, matching 1 for 1, such as: Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize Gi0/36 0 211739 0 211739 0 about 20 minutes later: Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize Gi0/36 0 219181 0 219181 0 So as you can see the traffic is being affected, specifically the traffic outbound from the server to the switch, which is why you are having the issues with the FTP sessions. Please advise a time when you wish to proceed. If you wish to proceed "Just after 20:00 CST on 01/22/2013", that is fine, and this will be scheduled for that time.

Can't say that I understand most of what they wrote...but it sounds good

[Force Flow]

If there are errors in the Rx/Tx traffic, I see a few possibilities:

1) The server's NIC drivers might need to be updated.
2) A switch port might be flaky.
3) Like MaxRat suggests, the server's NIC might be flaky.

Reducing the port speed is just a band-aid.

[EzyStvy]

Tech guy at the data center wrote:

As far as what I can see both private and public interfaces are running on half duplex[rather than full] which would in effect cause the transmit and received traffic to run into each other.

My Reply:

Yesterday I wrote: "However, the file transfer time was approx 30 minutes for both the automated and manual transfers." Today - manual FTP took 12 SECONDS to transfer the same file... WOW

Like I might have a winner