Purpose
Analyze new results for TULIP2 (using PlanetLab Landmarks) with TULIP1 (Using only PingER landmarks). We have used Speed net sites as our sample data. The location of these sites is already known.
Interesting Results
While doing the analysis we came across an interesting result for a speed net site. We conducted the initial tests on 2nd January,2008. When we tried to locate http://www.g3pcs.com
IP address 208.109.181.237 the three sites using for triangulation were Eugene_UnitedStates_PL 12.5ms Seattle_UnitedStates_PL 15.2ms and TRIUMF_Vancouver 19.1 ms. The Speed database showed that the site was in Ephrata, WA (Latitude:47.32 Longitude: -119.55). Although there was some Error distance but we believed the Speed Net database to be correct because Eugene,Seattle and Vancouver are close to Ephrata.
Latter on (4th March,2008) we conducted some new tests. This time three different sites responded with min RTT. SanDiego_UnitedStates_PL 13.337ms, LosAngeles_UnitedStates_PL 13.696ms and Riverside_UnitedStates_PL 14.342ms. The was located somewhere in California state. This is very interesting as we think that the site has moved since then. When we used the geoiptool to locate the site it gave Scottsdale, Arizonan(Latitude: 33.6 Longitude -111.89). We have a Planet Lab landmark in Phoenix, Arizona but that did not responded. If that site would have responded we would have got better results.
So our conclusion is that the site has moved between 2nd January,2008 and 4th March,2008.