Hi Lars,
This is very interesting study! it provides many useful information for the
TCP research at Google.
The queuing and processing delays on slide 12 (or figure 9 in the paper) are
mostly <50ms, but the following paper
"Characterizing residential broadband networks" published in IMC 2007
measures much higher queuing length ranging from 100ms to a few secs (
http://portal.acm.org/citation.cfm?id=1298306.1298313 figure 13).
Any idea about the differences?
Thanks,
Yuchung
On Fri, Jul 9, 2010 at 12:15 AM, Lars Eggert
<lars(_dot_)eggert(_at_)nokia(_dot_)com> wrote:
Hi,
a quick status update. We now have received over 100 donated home gateways,
plus a DSLAM. The students are on their summer break, after which we'll
start running a significantly expanded set of tests over this much larger
population of devices.
Many of yo have donated boxes and suggested more experiments and better
ways of performing our current tests - thank you!
In case you are attending IETF-78 in Maastricht and would like to donate a
home gateway, simply bring it. (Or contact me now for shipping details; no
cost to you.)
We're especially interested in devices from outside the EU and North
America, or any other model we may not have yet (see
http://fit.nokia.com/lars/tmp/2010-hgw-study-devices.txt). And we're still
lacking a CMTS for testing cable modems...
See you in Maastricht,
Lars
On 2010-6-2, at 18:36, Lars Eggert wrote:
Hi,
FYI, a first report with test results for 34 devices is available at
http://fit.nokia.com/lars/tmp/2010-hgw-study.pdf. Slides that summarize
the results are at http://fit.nokia.com/lars/tmp/2010-hgw-study-slides.pdf
.
We have received another 30-odd devices as donations, which we'll add to
the testbed and include in a follow-up study.
If you have an unused, spare home gateway to donate to this effort,
please contact us at nat-study(_at_)fit(_dot_)nokia(_dot_)com(_dot_) We're
also interested in
obtaining a DSLAM and a CMTS.
Thanks,
Lars
On 2010-4-29, at 12:34, Lars Eggert wrote:
Hi,
for a measurement study done together with Markku Kojo's team at the
University of Helsinki, we're looking to collect as many different NAT home
routers as possible. If you have an old clunker lying around somewhere,
please contact me off-list. I'll cover shipping via DHL. Feel free to
forward this email as you see fit.
The boxes will find a permanent home at the University of Helsinki.
Study results will be published openly. The intent is that this collection
become a resource for the community to be shared for future studies.
Caveat: The boxes should NAT between Ethernet interfaces - we don't have
DSL or cable access equipment in the lab setup at the moment.
Thanks,
Lars
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