Universita' degli Studi di Napoli ''Federico II'' (Italy)
Software-Defined Networks Monitoring
Networks are the more and more common and pervasive in many aspects of our everyday life. While they allow very easy access to online services and resources, they have become the more and more complex to both build and manage. Current network architectures are rigid thus it is especially hard to add new features to them.
Software Defined Networking (SDN) offers a solution for this problem mainly through the following features: (i) data and control planes are decoupled; (ii) control logic is moved out of the network devices (SDN switches) to an external Network Operating System (also called the SDN controller); (iii) external applications can program the network using the abstraction mechanisms provided by the SDN controller.
The SDN concept has quickly gained significant focus by the research community after the introduction of OpenFlow in 2008. The ongoing adoption and research on SDN has provided new opportunities regarding the network monitoring and measurements. The newly proposed solutions for network monitoring in SDN environments are based on approaches completely different from the counterparts in traditional networks, and this is mainly due to the abstraction mechanism provided by the Network Operating System (NOS).
The new possibilities provided by SDN and its NOS introduce also new issues, limitations, and sources of error, which were previously undiscussed in such manner. In projects related to SDN Monitoring we research both the new promises offered by SDN, and the new challenges it poses.
The SOMETIME project (SOftware Defined Network-based Available Bandwidth MEasuremenT In MONROE) is a "Scientific Excellence" project of the First MONROE Open Call for Experiments and Extensions. MONROE (Measuring Mobile Broadband Networks in Europe) is an European Horizon 2020 project, aimed at building and exercising an European testbed for 5G networks in the form of Experiments-as-a-Service.
In SOMETIME we are investigating the addition of Available Bandwidth (ABw) estimation to the set of metrics collected by MONROE. We will investigate implementations using active measurements and leveraging the Software Defined Network (SDN) paradigm, both to refine the technique considering interference with node-local processes (a more realistic scenario compared with mutually exclusive measurements), and to mitigate such interference.
Péter Megyesi, Alessio Botta, Giuseppe Aceto, Antonio Pescapè, Sándor Molnár "Challenges and solution for measuring Available Bandwidth in Software Defined Networks", Computer Communications (2016).
Péter Megyesi, Alessio Botta, Giuseppe Aceto, Antonio Pescapè, Sándor Molnár "Available Bandwidth Measurement in Software Defined Networks" ACM Symposium on Applied Computing (SAC) 2016, April 04 - 08, 2016, Pisa, Italy.
If you are interested in collaborating with us or in opportunities in Traffic, please send an e-mail to Antonio Pescapè.