November 17 – 20 , 2013, Dagstuhl Seminar 13472

Global Measurement Framework


Philip Eardley (British Telecom R&D – Ipswich, GB)
Marco Mellia (Polytechnic University of Torino, IT)
Jörg Ott (Aalto University, FI)
Jürgen Schönwälder (Jacobs Universität – Bremen, DE)
Henning Schulzrinne (Columbia University – New York, US)

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Dagstuhl Report, Volume 3, Issue 11 Dagstuhl Report
Aims & Scope
List of Participants


The Internet has a history of unexpected and often unpredictable behaviors due to manifold interactions of thousands of networks, and billions of components and devices and users. The resulting complexity requires measurements to understand how the network is performing, to observe how it is evolving, and to determine where failures or degradations occur. Especially with constantly evolving applications and their interaction paradigms, new phenomena occur and need to be factored into operations and management: one example is the substantial effort going into defining interfaces to assist peer-to-peer applications so that the amount of cross-ISP traffic is reduced. Measurements thus form an integral part of network operator tool sets to keep the net up and running.

But measurements are equally important for the research community to understand network traffic as well as protocol and application dynamics and their evolution. And they assist in quantifying application and (access) network performance and thus provide a tool for end users and regulators to monitor operators and their service level agreements. Tools such as have become widely used for individual measurements and basic ISP rating. Measurement service providers such as SamKnows or RIPE offer networks of probes, i.e., separate devices or embedded software on access routers, for continuous background measurements at the end users. These help ISPs and regulators in their work. Standards bodies such as the IETF and the Broadband Forum have established working groups to define a global measurement architecture and common interfaces and to extend the set of metrics describing communication properties.

This Dagstuhl seminar brought together researchers from industry, academia, and regulators to discuss the state of the art in measurements and their exploitation, measurement and analysis techniques, privacy and anonymization, and to contribute to a common understanding in a number of areas, including:

  • improving the expressiveness of measurement metrics (and develop appropriate new ones) beyond throughput, loss rate, and RTT so that the actual application-specific user emph{quality of experience} can be assessed;
  • expanding the reach, scale, and diversity of measurements and the corresponding data analysis to obtain a more comprehensive view on the performance of networks and applications;
  • structuring the otherwise mostly disconnected measurement activities to allow interfacing between them and/or providing defined access methods to them, for both carrying out measurements and accessing measurement results (offline and in real-time);
  • providing ways to better instrument and more broadly utilize measurement infrastructure, inside operators, for end users, and at third parties.

A side effect of this organization is that there were virtually no individual talks and hence no talk abstracts were collected.

We focused on two complementary aspects of a global measurement framework: 1) creating a global measurement framework and 2) using such a framework. Both were introduced by panels, with a lot of discussion contributing to these overviews, as described in the respective introduction to the following two sections.

Summary text license
  Creative Commons BY 3.0 Unported license
  Philip Eardley, Marco Mellia, Jörg Ott, Jürgen Schönwälder, and Henning Schulzrinne

Related Dagstuhl Seminar


  • Modelling / Simulation
  • Networks
  • World Wide Web / Internet


  • Internet measurements
  • Quality of experience
  • Network management
  • Traffic engineering


In the series Dagstuhl Reports each Dagstuhl Seminar and Dagstuhl Perspectives Workshop is documented. The seminar organizers, in cooperation with the collector, prepare a report that includes contributions from the participants' talks together with a summary of the seminar.


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