[Chrysalis]

I have noticed some repeatable problems starting from I think is friday 12th august. At first I thought it was a technicable problem but it now seems like traffic shaping.

Here is some speed tests from ftp sites (they dont use port 21)

Speed from a .nl 10mbit dedicated server no one else downloading of it.

ME
Transferred: testfile.zip 50,000,000 bytes in 4 minutes 50 seconds (168.1 KB/s)

Nildram 2mbit
transferred 1 file(s) - Total: 14.3 M byte(s) in 01:04 (233.06 KBps)

Speed from an .de 100mbit dedicated server no one else downloading of it.

ME
Transferred: 015MB 15,000,000 bytes in 1 minute 47 seconds (135.7 KB/s)

Nildram 2mbit
transferred 1 file(s) - Total: 14.3 M byte(s) in 01:08 (221.61 KBps)

Speed from a .us 100mbit

ME
Transferred 1 file totaling 7,556,935 bytes in 34.39 seconds (218.4 KB/s)

Nildram 2mbit
testfile.zip 14.3 Mbytes/01:04(s)/232.84Kbps

Now with the .de server, there has never been any problems before like this apart from ages ago when my ubr got congested. So I decided to download a file of the http server, speed was flat 240kB/sec. File of ftp server up and down like a yoyo avg 125kB/sec. pasv port range set to 10100-10200.

I did some experiments on a few other servers using various port ranges and the result was the same every time, max speed over http but low speed on any high port. What could the explanation be other then traffic shaping? I did some traceroute's and there is nothing unusual in them.