Re: [aqm] [tcpm] ECN support and usage on the Internet

On Tue, Mar 19, 2013 at 1:04 AM, Mirja Kühlewind
<mirja.kuehlewind@ikr.uni-stuttgart.de> wrote:
> Hi everybody,
>
> we just published a paper on the state of ECN support and usage on the
> Internet. We performed a similar study than Bauer et al., probing webservers
> to get the current status. We found that about 30% of webservers (by Sep'12)
> support ECN. Unfortunately, still we saw a failure rate of 9% when checking
> end-2-end path ECN usability (setting CE). Additionally, we analyzed NetFlow
> data to get a lower bound for the ECN usage which was below 1%. Then we also
> had a look at IPv6 (47,5% ECN support). At the same time we also monitored an
> increase in general IPv6 support on webserver over the IPv6 launch day last
> year (-> check the paper).
>
> Kühlewind, M.; Neuner, S.; Trammell, B.: On the state of ECN and TCP Options
> on the Internet. Proceedings of the 14th Passive and Active Measurement
> conference (PAM 2013), Hong Kong, March 2013.
>
> http://www.ikr.uni-stuttgart.de/Content/Publications/Archive/Kue_PAM13_40160.pdf
Do people on the list know any (good) evaluation of performance impact
of ECN on real and/or emulated networks. E.g., how much faster will
the Web be if ECN is used (correctly).

>
> Do we need to start a campaign to further encourage greater ECN support (also
> of network providers)? Asking the content providers on the list(s): What are
> the reasons to not enable ECN support?


>
> Mirja
>
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