Windows 2003 Server FTP

I have two Windows 2K3 servers that exchange files via FTP across a fat pipe
of approximately 3000 miles in length (all wired, terrestrial, links). I can
ping across this connection quite nicely but the ftp transfer often times
out. Put two Unix boxes in the place of the Windows boxes and everything
works fine every time.

I'm guessing there is some TCP/IP parameter in the Windows stack that is
causing this problem and I'm wondering if anyone knows the solution?

Thanks.

"ratler" <(E-Mail Removed)> wrote in message
news:886A6E12-9D75-4A61-9AB0-(E-Mail Removed)...
>I have two Windows 2K3 servers that exchange files via FTP across a fat
>pipe
> of approximately 3000 miles in length (all wired, terrestrial, links). I
> can
> ping across this connection quite nicely but the ftp transfer often times
> out. Put two Unix boxes in the place of the Windows boxes and everything
> works fine every time.
>
> I'm guessing there is some TCP/IP parameter in the Windows stack that is
> causing this problem and I'm wondering if anyone knows the solution?

Check out windows scaling as a possible issue. If your unix boxes are using
older kernels, they may not include windows scaling, which is why it might
be working.

Typically, windows scaling can be an issue if you have intermediate devices
that don't acknowledge windows scaling and replace the bits with all zeros.
This eventually kills the connection because the source device doesn't get
the response it's expecting.

Newer OSs include windows scaling by default, beginning with linux kernel
2.6, and I believe w2k3. not sure what flavor of unix you are on though.

Oliver

>
> Thanks.