Intern
    Lehrstuhl für Informatik III

     

    Dipl.-Inf. Steffen Gebert

    May 2005 - Dec 2016

     

    Publications

    2017

    • Zinner, T., Geissler, S., Lange, S., Gebert, S., Seufert, M., Tran-Gia, P.: A Discrete-Time Model for Optimizing the Processing Time of Virtualized Network Functions. Computer Networks. 125, 4-14 (2017).
       
    • Gray, N., Lorenz, C., Müssig, A., Gebert, S., Zinner, T., Tran-Gia, P.: A Priori State Synchronization for Fast Failover of Stateful Firewall VNFs. Workshop on Software-Defined Networking and Network Function Virtualization for Flexible Network Management (SDNFlex 2017). , Göttingen, Germany (2017).
       
    • Geissler, S., Gebert, S., Herrnleben, S., Zinner, T., Bauer, R., Jarschel, M.: TableVisor 2.0: Towards Full-Featured, Scalable and Hardware-Independent Multi Table Processing. NetSoft 2017, Best Student Paper Award (2017).
       
    • Lorenz, C., Hock, D., Scherer, J., Durner, R., Kellerer, W., Gebert, S., Gray, N., Zinner, T., Tran-Gia, P.: An SDN/NFV-enabled Enterprise Network Architecture Offering Fine-Grained Security Policy Enforcement. IEEE Communications Magazine. 55, 217 - 223 (2017).
       

    2016

    • Gebert, S., Geissler, S., Zinner, T., Nguyen-Ngoc, A., Lange, S., Tran-Gia, P.: ZOOM: Lightweight SDN-based Elephant Detection. First International Workshop on Programmability for Cloud Networks and Applications (PROCON). , Würzburg, Germany (2016).
       
    • Gebert, S., Zinner, T., Lange, S., Schwartz, C., Tran-Gia, P.: Performance Modeling of Softwarized Network Functions Using Discrete-Time Analysis. 28th International Teletraffic Congress (ITC). , Würzburg, Germany (2016).
       
    • Nguyen-Ngoc, A., Lange, S., Gebert, S., Zinner, T., Tran-Gia, P., Jarschel, M.: Performance Evaluation Mechanisms for FlowMod Message Processing in OpenFlow Switches. IEEE Sixth International Conference on Communications and Electronics. , Ha Long City, Vietnam (2016).
       
    • Gebert, S., Zinner, T., Gray, N., Durner, R., Lorenz, C., Lange, S.: Demonstrating a Personalized Secure-By-Default Bring Your Own Device Solution Based on Software Defined Networking, (2016).
       
    • Gebert, S., Zinner, T., Lange, S., Schwartz, C., Tran-Gia, P.: Discrete-Time Analysis: Deriving the Distribution of the Number of Events in an Arbitrarily Distributed Interval. University of Wuerzburg (2016).
       
    • Gebert, S.: Performance Modeling of Softwarized Network Functions using Discrete-Time Analysis. , Fachgruppentagung ITG 5.2.1, Technische Universität Hamburg-Harburg (2016).
       
    • Gebert, S., Müssig, A., Lange, S., Zinner, T., Gray, N., Tran-Gia, P.: Processing Time Comparison of a Hardware-Based Firewall and its Virtualized Counterpart. 8th EAI International Conference on Mobile Networks and Management (MONAMI 2016). , Abu Dhabi, United Arab Emirates (2016).
       
    • Gray, N., Zinner, T., Gebert, S., Tran-Gia, P.: Simulation Framework for Distributed SDN-Controller Architectures in OMNeT++. 8th EAI International Conference on Mobile Networks and Management (MONAMI 2016). , Abu Dhabi, United Arab Emirates (2016).
       

    2015

    • Gebert, S., Schwartz, C., Zinner, T., Tran-Gia, P.: Continuously Delivering Your Network, (2015).
       
    • Nguyen-Ngoc, A., Lange, S., Gebert, S., Zinner, T., Tran-Gia, P., Jarschel, M.: Investigating Isolation between Virtual Networks in Case of Congestion for a Pronto 3290 Switch. Workshop on Software-Defined Networking and Network Function Virtualization for Flexible Network Management (SDNFlex 2015). , Cottbus, Germany (2015).
       
    • Metter, C., Gebert, S., Lange, S., Zinner, T., Tran-Gia, P., Jarschel, M.: Investigating the Impact of Network Topology on the Processing Times of SDN Controllers. Seventh IFIP/IEEE International Workshop on Management of the Future Internet. , Ottawa, Canada (2015).
       
    • Gebert, S., Schwartz, C., Zinner, T., Tran-Gia, P.: Continuously Delivering Your Network (Short Paper). IEEE/IFIP International Symposium on Integrated Network Management (IM). , Ottawa, Canada (2015).
       
    • Lange, S., Gebert, S., Spoerhase, J., Rygielski, P., Zinner, T., Kounev, S., Tran-Gia, P.: Specialized Heuristics for the Controller Placement Problem in Large Scale SDN Networks. International Teletraffic Congress (ITC 27). , Ghent, Belgium (2015).
       
    • Gebert, S., Jarschel, M., Herrnleben, S., Zinner, T., Tran-Gia, P.: TableVisor: An Emulation Layer for Multi-Table OpenFlow Switches. 4th European Workshop on Software Defined Networks (EWSDN). , Bilbao, Spain (2015).
       
    • Lange, S., Nguyen-Ngoc, A., Gebert, S., Zinner, T., Jarschel, M., Koepsel, A., Sune, M., Raumer, D., Gallenmüller, S., Carle, G., Tran-Gia, P.: Performance Benchmarking of a Software-Based LTE SGW. 2nd International Workshop on Management of SDN and NFV Systems. , Barcelona, Spain (2015).
       
    • Gebert, S., Schwartz, C., Zinner, T., Tran-Gia, P.: Agile Management of Software Based Networks. University of Wuerzburg (2015).
       
    • Tran-Gia, P., Zinner, T., Gebert, S.: Performance Issues in SDN and NFV. , University of Toronto (2015).
       
    • Gebert, S., Jarschel, M., Hoffmann, M.: Demonstrating the Optimal Placement of Virtualized Cellular Network Functions in Case of Large Crowd Events, (2015).
       
    • Gebert, S.: TableVisor: An Emulation Layer for Multi-Table OpenFlow Switches. , Lightning Talk at 4th European Workshop on Software Defined Networks (EWSDN), Bilbao, Spain (2015).
       
    • Lange, S., Gebert, S., Zinner, T., Tran-Gia, P., Hock, D., Jarschel, M., Hoffmann, M.: Heuristic Approaches to the Controller Placement Problem in Large Scale SDN Networks. IEEE Transactions on Network and Service Management - Special Issue on Efficient Management of SDN and NFV-based Systems. 12, 4 - 17 (2015).
       

    2014

    • Gebert, S.: DevOps und Continuous Delivery. , Datev Trendscout, Nürnberg (2014).
       
    • Gebert, S.: SDN interfaces and performance analysis of SDN components. (2014).
       
    • Hock, D., Hartmann, M., Gebert, S., Zinner, T., Tran-Gia, P.: POCO-PLC: Enabling Dynamic Pareto-Optimal Resilient Controller Placement in SDN Networks, (2014).
       
    • Hock, D., Gebert, S., Hartmann, M., Zinner, T., Tran-Gia, P.: POCO: A Framework for the Pareto-Optimal Resilient Controller Placement in SDN-based Core Networks, (2014).
       
    • Gebert, S., Hock, D., Zinner, T., Tran-Gia, P., Hoffmann, M., Jarschel, M., Schmidt, E.-D., Braun, R.-P., Banse, C., Koepsel, A.: Demonstrating the Optimal Placement of Virtualized Cellular Network Functions in Case of Large Crowd Events, (2014).
       
    • Jarschel, M., Metter, C., Zinner, T., Gebert, S., Tran-Gia, P.: OFCProbe: A Platform-Independent Tool for OpenFlow Controller Analysis. 5th IEEE International Conference on Communications and Electronics (IEEE ICCE 2014). , Da Nang, Vietnam (2014).
       
    • Gebert, S., Hock, D., Hartmann, M., Spoerhase, J., Zinner, T., Tran-Gia, P.: Including Energy Efficiency Aspects in Multi-Layer Optical Network Design. 5th International Conference on Communications and Electronics (ICCE 2014). , Da Nang, Vietnam (2014).
       

    2013

    • Hock, D., Hartmann, M., Gebert, S., Jarschel, M., Zinner, T., Tran-Gia, P.: Pareto-Optimal Resilient Controller Placement in SDN-based Core Networks. 25th International Teletraffic Congress (ITC). , Shanghai, China (2013).
       

    2012

    • Metzger, F., Gebert, S., Salzlechner, K., Ratetseder, A., Romirer, P., Tutschku, K.: Signaling Load and Tunnel Management in a 3G Core Network. University of Wuerzburg (2012).
       
    • Gebert, S., Pries, R., Schlosser, D., Heck, K.: Internet Access Traffic Measurement and Analysis. Traffic Monitoring and Analysis (TMA) workshop co-located with the 13th Passive and Active Measurement (PAM) conference. , Vienna, Austria (2012).
       

    2011

    • Gebert, S.: A Modular, Transparent Measurement Architecture for Internet Access Traffic Characterization, (2011).
       

    Talks & Presentations

    • Steffen Gebert, Thomas Zinner: "Neue Transportprotokolle braucht das Land! - Wie HTTP/2, QUIC und MPTCP das Web modernisieren" - Datev TrendScout, Nürnberg, April 2016
      (english version available: "Cleaning Up the Dirt of the Nineties - How New Protocols are Modernizing the Web")
    • Steffen Gebert, Peter Sturm: "7x7 = Feiner Sand - Architekturalternativen für moderne Anwendungen - Docker, Microservices & PaaS" - Datev TrendScout, Nürnberg, Mai 2015
    • Phuoc Tran-Gia, Thomas Zinner, Steffen Gebert: "Performance Issues in SDN and NFV", University of Toronto, Kanada, Mai 2015
    • Steffen Gebert, David Hock, Michael Jarschel, Thomas Zinner, Phuoc Tran-Gia: "SDN interfaces and performance analysis of SDN components" - ZKI Herbsttagung, Kaiserslautern, September 2014
    • Steffen Gebert: "DevOps und Continuous Delivery", Datev TrendScout, Nürnberg, Juli 2014

    Teaching

    Master Theses

    • Helmschrott, F.: Measurement-based Performance Assessment of the QUIC Web Transport Protocol, (2016).
       
    • Müssig, A.: Comparison of State Synchronization Strategies for a Cloud-based Firewall VNF, (2016).
       
    • Gray, N.: Implementation of a Simulation Framework for Distributed SDN-Controller Architectures in OMNeT++, (2015).
       
    • Schnappauf, J.: Investigation of the Virtualized Network Function Traffic Shaping, (2015).
       
    • Oberste-Vorth, S.: Measurement-based Performance Comparison of SDN-related Northbound APIs, (2015).
       
    • Mayer, F.: Enhanced Resilience Aspects in the CAPEX-oriented Design of Multi-Layer Optical Networks, (2013).
       

    Bachelor Theses

    • Berani, S.: Evaluation of an Adaptive Flow Monitoring Implementation for SDN-based Networks, (2016).
       
    • Herrnleben, S.: Towards an Emulation of a Multi-Table OpenFlow Switch through a Proxy Layer, (2015).
       
    • Borsos, R.: Social Network Analysis of Software Development Mailing Lists, (2014).
       
    • Werthmann, A.: Implementation and Evaluation of Extended Resilience Metrics for the Pareto-Optimal Controller Placement in SDN-based Networks, (2014).
       
    • Rauscher, R.: Measuring the Performance of a Virtualised Network Function in OpenStack, (2014).
       
    • Müssig, A.: Comparative Measurements of an OpenFlow Virtualization in OpenStack, (2014).
       

    Research Practica

    • Schreck, M.: Matlab REST API, (2016).
       
    • König, F.: Cloud Computing with OpenStack: Deployment and Networking, (2016).
       
    • Pfaff, B.: A Behavior-driven Approach for Testing Softwarized Networks using OpenStack Infrastructures, (2016).
       
    • Reinhart, L.: An SDN-based Implementation of a Network-controlled “Bring Your Own Device” Scenario, (2016).
       
    • Werthmann, A.: Untersuchung der Sicherheit von Desktop- und Smartphone-Applikationen hinsichtlich HTTPS-Man-in-the-middle-Angrifen, (2016).
       
    • Müssig, A.: Comparison of the Data Plane Performance of a Commercial Hardware Firewall and its Software Pendant, (2015).
       
    • Geissler, S.: Elephant Detection using SDN, (2015).
       
    • Scherer, J.: SysStew: ein Framework zur Test-Automatisierung, (2014).
       
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    Lehrstuhl für Informatik III (Kommunikationsnetze)
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    97074 Würzburg

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