[e2e] [SPAM] opening multiple TCP connections getting popular

[Marco Mellia]

Hi Michael,

Just to add a "bit" on the window scaling option, we are continously 
monitoring our traffic on both our campus LAN and
on a commercial ISP provider.
As you can see, there is no big change in the percentage of window 
scaling option sucessfully negotiated in the last year...

Polito probe
http://tstat.tlc.polito.it/cgi-bin/tstat_rrd.cgi?template=normidx&var=tcp_opts_WS&dir=rrd_data/Polito/LIVE&logscale=&bigpic=true&advopt=true&yauto=false&advcmd=&describe=&hifreq=false&ymin=0
ISP probe
http://tstat.tlc.polito.it/cgi-bin/tstat_rrd.cgi?template=normidx&var=tcp_opts_WS&dir=rrd_data/Polito/LIVE&logscale=&bigpic=true&advopt=true&yauto=false&advcmd=&describe=&hifreq=false&ymin=0

Hope this helps.

Marco


> Does anybody know if there's a generally known, agreed upon reason
> for not using Window Scaling? Google tells me that some broken
> routers can't handle it... but, interestingly, Wikipedia (via
> google :-) ) tells me that, since kernel version 2.6.8, the option
> is enabled in Linux by default, and that it's used (by default? don't
> know) in Vista...  so what, are we already heading for trouble?
>
>
>