Re: File Transfer from PC to iSeries Sucks

On Thu, Jul 24, 2008 at 10:23 PM, Bruce Collins
<Bruce.Collins@xxxxxxxxxxxxx> wrote:

Using WS-Ftp Pro 2007 it starts at 1500 kbps and drops to 45 kbps.
Using DOS FTP does much better than windows based but still slower than I think it should be.
Using Client Abscess doing a drag and drop. About the same as windows.

Okay, this means you have a network problem.

I check all the Line descriptions and no Duplex Mismatches. If I go and ask the network guys could we have faulty switches, NIC or other stuff they just laugh and no. Their statement is "no one else has called and complained". I have no control over that group.

Ah, the joy of big companies.

You'll need to narrow down the problem and present evidence.

Do you have a currently unused network card on the system? Plug a
laptop into it, add a line description and IP address, and do a direct
transfer. If your machine can sustain it (specs would help - how many
arms, what model, what cpu, how much memory), you should see up to
12MByte/s on a 100MB Link or up to 120Mbyte/s on a Gigabit Link (at
first - the laptop won't be able to write that fast).

If you can't logon to the switches, you can't check if there are
duplex mismatches. A best practice today is to leave everything at
Auto/Auto (earlier, manual configuration was better than
autodetection).

Lukas you will have to help me with what is "SMB Signing"?

SMB Signing is something that can prevent MITM-Attacks with SMB (aka
CIFS aka Windows Filesharing) - it's what Netserver uses.
Misconfigured SMB Signing can cause the problem you described, but if
FTP exhibits the same problems you can exclude SMB Signing as being
the issue - SMB Signing only effects netserver, not FTP.