Malfunctional ftp upload packages

[earchy]

Hello,

I now got stranded here because I'm totally lost in a TCP/IP configuration problem.

Whenever I upload files via ftp I wonder why almost every 5th file shows up with a 0-byte length after uploading. All other files seem to fit proper size.

Some files i.e. a file with a 64 KB size goes up there only with 32767 Bytes of size. I can reload as often I want. The whole system dosn't care.

I did all of changing the ftp client as well as the ftp settings in the client settings.

Then I started to examine the TCP/IP parameters. But I am doing so for about two weeks always changing parameters pennywise. No success.
I am really at the end and hope you can help.

Here are my settings:

Windows XPSP2
Germany DSL (t-online)

MaxMTU : 1492
TCPREcieveWindow :25552
TTL : 64
MTU Discovery : Yes
Black Hole Detect: No
SACKs: Yes
Max Dupl.Acks: 2
WindowsScaling : on

The speedguide TCP Optimizer tells me, that I shoud set the MaxMTU to a value of 1480. But I don't believe that. When I run with this value my connection seem to be very slow.

So. What else can I do to get my 64k file completly uploaded?

Looking forward to the golden hint

earchy
Bonn, Germany

[mccoffee]

The upload promblem my guess isn't cuase by any setttings in the stack my guess it's a firewall setting maybe something on the line to be honest i'm not sure.

Your rwin is kinda high though i would try thease

Try thease in the sg optmizer below me to download and install
select - cable
check - custom settings
network adapter selection -
check modify all adapters
maxmtu -1492
TTL - 64
TCP Receive Window leave Blank
MTU Discovery - yes
Black Hole Detect - no
Selective Acks - yes
Max Dup ACKs - 2
TCP 1323 windows scailing is checked
Other Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 20
Lan Browsing Speedup - optimized
Then select "Apply Changes" and reboot to take effect.

1. Under your LAN connection - properties - general tab, uninstall all the protocols there that you do not need.

2. Open IE and select tools - internet options - connections -
LAN settings, make sure NOTHING there is checked.

3. ALWAYS connect your modem via ethernet (NIC) and make sure you have the latest drivers for your NIC from the manufacturer. Set your NIC duplex mode to 10mb half duplex for Cable, for DSL it is ISP dependent unless you are using a router, if so then set it to 100mb full duplex for both Cable & DSL (the instructions are in my Help & Tips link). If you are using a router make sure you have the latest firmware.

4. Clear your temporary internet files.

5. Power cycle your modem, unplug it for atleast 15 seconds.

6. Download and update then do a scan with SpyBot 1.2 http://beam.to/spybotsd & Ad Aware 6.0 http://www.lavasoftusa.com/support/download to remove any spyware then install and update SpywareBlaster to stay spyware FREE. YOU MUST USE BOTH AD AWARE & SPYBOT TO ENSURE YOU ARE SPYWARE FREE SINCE ONE FINDS WHAT THE OTHER MISSES.

7. Make sure you do the faster web page tweak in Read1st link.

8. If you have Zone Alarm as a firewall uninstall it then visit Zonelabs.com for further instructions on removing it's left over junk.

9. Install Outpost Firewall http://www.agnitum.com\ (http://www.agnitum.com) or Sygate Firewall http://www.sygate.com/ , both have FREE and Pro versions and are heads above ZA.

10. Scan for viruses with your antivirus app, if you do not have one get one IMMEDIATELY, AVG 6.0 http://www.grisoft.com/us/us_dwnl_free.php is an excellent FREE AV app.

11. Make sure you have ALL of the latest Windows Updates