Asymmetric characteristics of Internet based on traffic measurement and analysis

This paper presents measurement and analysis of various networks and applications using a high-speed IP meter. The authors have developed a high-speed IP meter with a GPS timestamp component, which enables precise measurement of packet delay and jitter in various networks. Measurement of the following networks was performed, 1) Measurement of traffic in a commercial IPv6 access service on ADSL, as a typical broadband access service network. 2) Measurement of traffic in the 54th IETF meeting in Yokohama, as a typical high-speed Internet backbone network. This paper reports the characteristics identified in these networks, e.g. asymmetricities of one-way packet delay over an ADSL access network and the difference in TCP/UDP packet delay over a high-speed backbone network. It also presents the analysis results of some multimedia applications in the Internet, and discusses the quality of service on Internet access service networks.