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Measuring the Impact of Active Probing on TCP

Research group:

Publication Type:

Conference/Workshop Paper


International Symposium on Performance Evaluation of Computer and Telecommunication Systems


Available bandwidth measurement methods have become more and more accepted to be used when seeking the status of a network path. To measure the end-to-end available bandwidth without access to the path routers, these methods inject probe packets into the network path. The probe-packet load can transiently be high and thus it is important to study the impact on the existing TCP flows.In this paper, we show and discuss our simulation results on how the TCP flows are affected when injecting probe packets with different flight patterns into the network path. We also investigate the relation between the amount of injected probe packets and the reduction in TCP performance. Finally we suggest and discuss a quantitative definition of the term ``network friendly probing''.


author = {Andreas Johnsson and Mats Bj{\"o}rkman},
title = {Measuring the Impact of Active Probing on TCP},
month = {July},
year = {2006},
booktitle = {International Symposium on Performance Evaluation of Computer and Telecommunication Systems},
url = {}