Introduction

OneProbe is a new solo-active system that measures the quality of an end-to-end network path using normal TCP data packets. OneProbe uses the same TCP data probes to measure a number of path metrics---round-trip delay and delay jitter, forward-path and reverse-path packet loss rates, forward-path and reverse-path packet reordering rates, and forward-path and reverse-path capacity. By using data probes for measurement, OneProbe's results can accurately reflect the path quality experienced by data packets (i.e., data-path quality). Besides, OneProbe measurement will not be easily tampered by path intermediaries and malicious activities on the path, because the probe and response packets cannot be easily distinguished from normal TCP. The current implementation is based on HTTP and web services.

This project is partially supported by a grant from the Innovation Technology Fund in Hong Kong1.

1. Any opinions, findings, conclusions or recommendations expressed in this material/media event (or by members of the project team) do not reflect the views of the Government of the Hong Kong Special Administrative Region, the Innovation and Technology Commission or the Assessment Panel for the Innovation and Technology Fund.