05. – 08. September 2012, Dagstuhl-Seminar 12363

Software Defined Networking


Pan Hui (T-labs – Berlin, DE & TU Berlin, DE)
Jussi Kangasharju (University of Helsinki, FI)
Teemu Koponen (Nicira Networks Inc. – Palo Alto, US)

Auskunft zu diesem Dagstuhl-Seminar erteilt

Dagstuhl Service Team


Dagstuhl Report, Volume 2, Issue 9 Dagstuhl Report


Software Defined Networks (SDN) is seen as the most promising solution to resolve the challenges in realizing sophisticated network control. SDN builds its promise on the separation of the network control functions from the network switching elements. By moving the control plane out from the network elements into standalone servers, the switching elements can remain simple, general-purpose, and cost-effective and at the same time the control plane can rely on design principles of distributed systems in its implementation instead of being confined to distributed routing protocols.

The purpose of the seminar was to look at the current developments in this quickly evolving problem domain and identify future research challenges. The seminar brought together researchers with different domains and backgrounds. Given the high level of interest in SDN from industry, the organizers also invited many participants from companies working with SDN related networking products and services. This mix of people resulted in fruitful discussions and interesting information exchange. The structure of the seminar took advantage of these different backgrounds by focusing on themed talks and group discussions.

Software-Defined Networking (SDN) continues to remain relevant both for the industry and academia and indeed this was very much reflected in the backgrounds of the seminar participants; the seminar had a balanced mix of representatives both from industry and academia.

The seminar discussions and talks were structured around three themes:

  1. Status updates. From the very definition to the ongoing standardization work, SDN is still evolving. In these talks and discussions, we dived into the ongoing work at ONF as well as the perceived hard problems to be solved.
  2. Industry use cases. In this theme the focus was on exposing the academia to the practical use cases on which industry is working.
  3. Implementation. The third theme dived into the details and exposed the seminar participants to both the practical implementation issues faced as well as more theoretical observations about the system design.

The seminar was well received by the participants. Among the participants there were also organizers of future SDN workshops (IRTF SDN and DIMACS SDN) who signaled the intent of building their workshops around the similar discussion-oriented structure preferred at Dagstuhl.


  • Hardware
  • Modelling / Simulation
  • Networks


  • Software defined networking
  • Routing
  • Data centers


In der Reihe Dagstuhl Reports werden alle Dagstuhl-Seminare und Dagstuhl-Perspektiven-Workshops dokumentiert. Die Organisatoren stellen zusammen mit dem Collector des Seminars einen Bericht zusammen, der die Beiträge der Autoren zusammenfasst und um eine Zusammenfassung ergänzt.


Download Übersichtsflyer (PDF).


Es besteht weiterhin die Möglichkeit, eine umfassende Kollektion begutachteter Arbeiten in der Reihe Dagstuhl Follow-Ups zu publizieren.

Dagstuhl's Impact

Bitte informieren Sie uns, wenn eine Veröffentlichung ausgehend von
Ihrem Seminar entsteht. Derartige Veröffentlichungen werden von uns in der Rubrik Dagstuhl's Impact separat aufgelistet  und im Erdgeschoss der Bibliothek präsentiert.