this book constitutes the refereed proceedings of the 7th ifip/ieee international workshop on protocols for high speed networks, pfhsn 2002, held in berlin, germany in april 2002. the 14 revised full papers presented together with two invited papers were carefully reviewed and selected from 54 submissions. the papers are organized in topical sections on signalling and control, application-level mechanisms, tcp and high speed networks, quality of service, and traffic engineering and mobility.