Active measurements (experiments) of the Internet traffic using cache-mesh

We present here the preliminary results of the active measurements of Inter net traffic. The main goal is the measurement of the effectiveness of hiera rchical cache developed last years in a number of countries using Squid sof tware. The passive measurements could not give any conclusive answer. The p rocedure of the active measurements was developed for that reason. First, w e use active measurements (experiments) of Internet traffic sending the htt p-requests from the log files. This give possibility to perform the compara tive measurements which is usually more accurate. Next, more sophisticated procedure using triangle of cache servers, one working as the only manager for the two others, which could be setup differently and, typically, serve only odd and even queries respectively was proposed. This procedure, probab ly, is the most precise experimental setup for the comparative study of ser ver strategies could be done on the basis of standard hardware and software .