Hi,
This is going to be a long one :)
I am running Win2k Server + SBS2k on quite fast machine.
It has 2 NIC's instaled - Intel's server version, I don't
think model number would change anything. This machine is
a domain controller + all the stuff given, except IIS.
Let's call this one SBS.
The other machine is running Linux on PentiumPro 166 (or
200MHz - nevermind) and it is configured to work only as
router for our company - which is I think good idea after
all. It has much older NIC's - 3COM 10Mbps for LAN and
CNet 10/100Mbps for WAN. I know that this NIC config does
not make sense, but it works great. I will call this
machine Lin.
Workstatnions are all Pentium4 3.06GHz & so on.
THE PROBLEM
While connecting to Lin via SBS using any ftp client, you
get the download "speed" 28kB/sec or 45.7kB/sec. This
depends on firewall config on SBS - I get faster transfers
while the firewall is working, and slow down when it's
down. Weird, huh? Nevermind that. Those speed values have
just nothing to do with what the transfer should be - at
least 20 times more! It was like that on the beginning of
the server's life - about 9 months ago. The ftp transfers
from Lin to my workstation were >800kB/sec.
I could blame firewall/proxy/anything for lowering
transfer, but not that much.
The other interesting thing is that when I connect to SBS
using Terminal Client (I don't know the exact english
name, but I hope you know what I mean), and FTP to Lin i
get sometimes the highest transfer - as it should be - but
mostly just as I wrote above - 45.7kb/sec. Looks like SBS
is blocking the traffic.
Has anyone of you got simillar situation? Any ideas of
solving the problem? Or at least a good diagnosis?
Oh, there's no rules for firewall on SBS (no need), and
using direct connection to Lin gives 100% network traffic
efficiency.