Download speed and TCPIP window sizing

Rudolf Cejka cejkar at
Fri Jun 1 11:47:01 UTC 2007

Pang wrote (2007/05/31):
>  I have asked many techs in Asianetcom and they blamed on TCPIP window 
> sizing. I am not sure what it is, so I do a search in Google and find 

More typical problem than TCP window size is Ethernet connection itself,
for example one side thinks it has 100 Mb/s half duplex and the second
side thinks that it has 100 Mb/s full duplex, which results in speeds
around 10 - 100 KB/s.

Rudolf Cejka <cejkar at>
Brno University of Technology, Faculty of Information Technology
Bozetechova 2, 612 66  Brno, Czech Republic

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