Stéphane Bortzmeyer#RIPEduca starts in less than one hour https://www.ripe.net/support/training/ripe-ncc-educa Today, RIPE Atlas probes!
One last coffee and I stand ready.
Soon to start, #RIPEduca. Expect some live-tooting about RIPE Atlas probes, Internet measurements and etc, if the proprietary bloatware Adobe Connect works.
Now, RIPE Atlas probes and Internet Exchange Points, by Willem Toorop and Emile Aben.
"We will start with the first presentation" #captainObvious
A study of Internet connectivity in Canada
The Canada interconnectivity survey was done by analysis *existing* RIPE Atlas measurements (by default, measurement results are public).
Among the questions: how much of canadian traffic stays inside Canada? Between unicast machines (gov. Web servers for instabce) hosted in Canada? Between a probe in Canada and a anycast DNS server which has instances in Canada?
Usual problems of Internet measurements: traceroute with non-responding routers, routers replying with RFC 1918 (private) IP addresses, geolocation inperfect...
Ping @angristan about the ability of the US to shut down the Internet: some Canada traffic goes through the US.
Result: 64 % of "canadian" traceroutes go through the US. (And these traceroute are often faster, which may be the reason: international links are upgraded more often; another reason is the lack of peering in the country)
Only 29 % of canadian governement sites are hosted in Canada. (And traceroute to them often go through the US.)
Emile Aben presents "IXP Jedi", a measurement of the actual use of Internet Exchange Points (like the France-IX) through RIPE Atlas measurements. Do they really "keep local traffic local"? [Insert picture of a very smiling user]
A limit of all RIPE Atlas measurements, spotted by Emile Aben: probes vs. Internet users is heavily biased. Not enough probes in Africa, for instance (and "too many" in Europe). #RIPEduca
John Shaft (ジョン・シャフト) ✅@bortzmeyer In Asia too : only 15 probes in mainland China (and 28 in Hong Kong), 1 in Mongolia, 5 or 6 in Cambodia, less than 10 in Vietnam...
Example of #Finland: the most common path between two finlandeses probes is inside the country but not crossing an IXP. A minority goes through an IXP.
Example of #France: some FR-FR paths go through the US (and many go to another of the Five Eyes, such as GB) [Remember that Orange does not peer at a public Exchange Point in France]