Predicting and Tracking Internet Path Changes
This paper investigates to what extent it is possible to use traceroute-style probing for accurately tracking Internet path changes. When the number of paths is large, the usual traceroute based approach misses many path changes because it probes all paths equally. Based on empirical observations, the authors argue that monitors can optimize probing according to the likelihood of path changes. They design a simple predictor of path changes using a nearest neighbor model. Although predicting path changes is not very accurate, they show that it can be used to improve probe targeting. Their path tracking method, called DTRACK, detects up to two times more path changes than traditional probing, with lower detection delay, as well as providing complete load-balancer information.