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Deutsch Intern
    Lehrstuhl für Informatik III

    Networking and SDN

    We deal in projects with the topic of Access Networks and Software-Defined Networking (SDN). In particular we consider availability, reliability and serviceability for data center and WAN networks.

    Journal Article: Analytical Model for SDN Signaling Traffic and Flow Table Occupancy and its Application for Various Types of Traffic

    Best Paper Award auf der CNSM 2016

    Bachelor Thesis: "Assessment of the ONOS SDN Controller in Case of Network Errors"

    Paper: Analytic Model for SDN Controller Traffic and Switch Table Occupancy

    Related Projects

    SDN-RAS2(Fast Failure Detection in Software-Defined Networks)

    In systems design, a fail-fast system is one which immediately reports at its interface any condition that is likely to indicate a failure. Such designs often check the system's state at several points in an operation, so any failures can be detected early.

    The objective of the project is the study and analysis of fast fault detection and localization techniques for SDN.

    SDN-RAS(SDN - Reliabilty, Availabilty & Serviceability Challenges)

    The project focuses on the identification and analysis of the top reliability, availability and serviceability challenges of current SDN mechanisms, protocols, and architectures. 

    Related Research Areas

    Research Area: Access Networks

    Study on Wifi Offloading: WiFi Offloading is a current trend to cope with the demands of mobile users and the load on cellular networks. It allows providers to handle the traffic in well-dimensioned fixed networks and thereby save costs. In addition, end users can benefit from higher throughput and avoid exceeding their data plan.

    Application Aware Networking: Application-aware resource management is the approach to tailor access networks to have characteristics beneficial for the running applications and services. This is achieved through the monitoring and integration of key performance indicators from the application layer within the network resource management.

    Research Area: Network Functions Virtualization - Research on Performance Evaluation

    Network Function Virtualization (NFV) has become an emerge network technology in recent years. It has received a noticeable interest of not only researchers, network providers but also a huge market. NFV aims to reduce significantly the Capital Expenses (CAPEX) and Operating Expenses (OPEX) by leveraging virtualization technology to consolidate network functions running on equipment onto high volume commodity servers.

    Considering this field of study, we are interested in the NFV architecture and its components. For example, the NFV infrastructure requires optimized methods to dynamically allocate virtual resources for VNFs. On the other hand, NFV management and orchestration needs a VNF manager/placement engine to instantiate the VNFs in network with regard to energy saving, less traffic utilization, etc. On the top of the architecture, the VNFs must perform at least as efficient as the legacy functions. We are focusing on evaluating the VNF performance in comparison with a legacy function. Other topics may relate to the trade-off between hardware utilization and the performance of VNFs and traffic modeling for virtual network functions chaining.

    Publications

    Publications

    Projects SDN-RAS & SDN-RAS²

    • Metter, C., Burger, V., Hu, Z., Pei, K., Wamser, F.: Evaluation of the Detection Capabilities of the ONOS SDN Controller.7th IEEE International Conference on Communications and Electronics (IEEE ICCE 2018). pp. 96 - 101. , Hue, Vietnam (2018).
       
    • Metter, C., Burger, V., Hu, Z., Pei, K., Wamser, F.: Towards an Active Probing Extension for the ONOS SDN Controller.2018 28th International Telecommunication Networks and Applications Conference (ITNAC) (ITNAC 2018). p. 8. , Sydney, Australia (2018).
       
    • Metter, C., Seufert, M., Wamser, F., Zinner, T., Tran-Gia, P.: Analytical Model for SDN Signaling Traffic and Flow Table Occupancy and its Application for Various Types of Traffic.IEEE Transactions on Network and Service Management.14,603-615 (2017).
       
    • Metter, C., Seufert, M., Wamser, F., Zinner, T., Tran-Gia, P.: Analytic Model for SDN Controller Traffic and Switch Table Occupancy.12th International Conference on Network and Service Management (CNSM). , Best Paper Award, Montreal, Canada (2016).
       

    Student projects and theses

    • Metter, C., Seufert, M., Wamser, F., Zinner, T., Tran-Gia, P.: Analytical Model for SDN Signaling Traffic and Flow Table Occupancy and its Application for Various Types of Traffic.IEEE Transactions on Network and Service Management.14,603-615 (2017).
       
    • Bott, L.: Implementing Backup Paths and Recovery Strategies in an SDN controlled by ONOS, (2017).
       
    • Knapp, T.: Extending the Monitoring Features of ONOS, (2017).
       
    • Abd El Hai, S.: Measuring the Applicability of the Analytic Model for SDN Controller Traffic and Switch Table Occupancy, (2017).
       
    • Knapp, T.: Assessment of the ONOS SDN Controller in Case of Network Errors, (2016).
       
    • Rachor, C.: Testbed-based RAS Evaluation in SDN using ONOS, (2015).
       

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    Lehrstuhl für Informatik III (Kommunikationsnetze)
    Am Hubland
    97074 Würzburg

    Phone: +49 931 31-86631
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