This book constitutes the refereed proceedings of the 8th International Conference on Passive and Active Measurement, PAM 2007, held in Louvain-la-Neuve, Belgium, in April 2007.

The 21 revised full papers and 12 revised short papers presented were carefully reviewed and selected from 80 submissions. The papers focus on research and practical applications of network measurement and analysis techniques and are organized in topical sections on interdomain routing, P2P, wireless 802.11, wireless 3G/CDMA/Bluetooth, infrastructure and services, traffic, and measurement principles.