why upload with adsl is faster than 100M ethernet ?

Mikael Abrahamsson swmike at swm.pp.se
Fri Oct 15 05:01:22 UTC 2004

On Fri, 15 Oct 2004, Joe Shen wrote:

> But, why TCP throughput experience so much difference between ADSL acess
> and fiber link access?

Ask the customer to install Ethereal on the computer sending the file and
dump all data on the TCP session and send it to you, then use the Ethereal
function "speed over time" or what it's called.

It'll use the TCP information in the packet dump to determine over time 
what speed the transfer was. If the speed is saw-toothing over time you 
might have a very aggressive policer on the way which is hit by the faster 
line, but not with the slower one.

Mikael Abrahamsson    email: swmike at swm.pp.se

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