wundsam.net

Andreas Wundsam

I work as a Tech Director at Arista Networks. Prior to the acquisition of Big Switch Networks, I was DE and Co-CTO there. And before that, I did SDN Research with the good folks at ICSI/UC Berkeley’s Netsyslab and at TU Berlin. I was a DAAD postdoctoral research fellow here until 2012, working with Scott Shenker. I received my Ph.D. from TU Berlin, advised by Anja Feldmann.

SDN projects

Troubleshooting SDN

STS

• Colin Scott, Andreas Wundsam, Aurojit Panda, Barath Raghavan, Andrew Or, Jefferson Lai, Eugene Huang, Zhi Liu, Ahmed El-Hassany, Sam Whitlock, H.B. Acharya Kyriakos Zaarifis and Scott Shenker. Troubleshooting SDN Control Software with Minimal Causal Sequences. To appear in Proceedings of ACM SIGCOMM 2014, Chicago 2014
• STS is our project on troubleshooting software-defined networks. Our tool is publicly available. Slides from Colin’s talk at the Stanford CTO summit are available here.

OFRewind

• Andreas Wundsam, Dan Levin, Srini Seetharaman, Anja Feldmann. OFRewind: Enabling Record and Replay Troubleshooting for Networks. In Proceedings of Usenix Anual Technical Conference (Usenix ATC ‘11), (Location: Portland, Oregon), Pages 327-340, 2011. Paper , Slides Andreas Wundsam, Dan Levin, Srini Seetharaman, Anja Feldmann. OFRewind: Enabling Record and Replay Troubleshooting for Networks. Poster, OpenFlow CTO summit, Stanford, 2011 Poster

Layered Troubleshooting

• Brandon Heller, Colin Scott, Nick McKeown, Scott Shenker, Andreas Wundsam, Hongyi Zeng, Sam Whitlock, Vimalkumar Jeyakumar, Nikhil Handigol, James McCauley, Kyriakos Zarifis, and Peyman Kazemian Leveraging SDN layering to systematically troubleshoot networks In Proceedings of ACM HotSDN 2013, (Location: Hong Kong), Pages 37-42, 2013. Paper

SDN architecture

NOSIX - a lightweight portability API for SDN controllers

• Minlan Yu, Andreas Wundsam, Muruganantham Raju NOSIX: A Lightweight Portability Layer for the SDN OS Computer Communication Review (CCR), 2014 Journal Article
• Andreas Wundsam, Minlan Yu NOSIX - A Lightweight Portability Layer for the SDN OS Open Networking Summit 2013, Research Track Extended abstract Slides
• Earlier Tech Report: Andreas Wundsam, Minlan Yu NOSIX: A portable Switch Interface for Network Operating System ICSI Technical Report, TR-12-013. Tech report , Earlier Poster: Poster

SDN State Distribution Tradeoffs

• Dan Levin, Andreas Wundsam, Brandon Heller, Nikhil Handigol, and Anja Feldmann. Logically centralized?: state distribution trade-offs in software defined networks In Proceedings of the ACM HotSDN ‘12 (Location: Helsinki), Pages 1-6, 2012. Paper

Older Projects

Mirror VNets

• Andreas Wundsam, Amir Mehmood, Anja Feldmann, Olaf Maennel. Network Troubleshooting with Mirror VNets. In Proceedings of IEEE Globecom 2010 Workshop of Network of the Future (FutureNet-III), (Location: Miami, FL, USA), Pages 283-287, IEEE, New York, NY, USA, December 2010.
• Andreas Wundsam, Amir Mehmood, Anja Feldmann, Olaf Maennel. Improving Network Troubleshooting using Virtualization. Research Report Technische Universität Berlin, Fakultät Elektrotechnik und Informatik, No. 2009-12, June 2009.
• Andreas Wundsam, Amir Mehmood, Anja Feldmann, Olaf Maennel. Network Troubleshooting with Shadow VNets. In SIGCOMM ‘09: Demo Session of the 2009 conference on Applications, technologies, architectures, and protocols for computer communications, (Location: Barcelona, Spain), August 2009.

Virtual Network Archiecture

• Gregor Schaffrath, Christoph Werle, Panagiotis Papadimitriou, Anja Feldmann, Roland Bless, Adam Greenhalgh, Andreas Wundsam, Mario Kind, Olaf Maennel, Laurent Mathy: Virtualization Architecture: Proposal and Initial Prototype. In VISA 2009 - The First ACM SIGCOMM Workshop on Virtualized Infastructure Systems and Architectures, August 2009. PDF

Testbeds

• Amir Mehmood, Andreas Wundsam, Steve Uhlig, Dan Levin, Nadi Sarrar, Anja Feldmann. QoE-Lab: Towards evaluating Quality of Experience for Future Internet Conditions. In Proceedings of 7th International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities (TridentCom ‘11), (Location: Shanghai, China), April 2011.
• Dan Levin, Andreas Wundsam, Amir Mehmood, Anja Feldmann. BERLIN: The Berlin Experimental Router Laboratory for Innovative Networking. In Proceedings of the 6th International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities (TridentCom 2010, poster session), (Location: Berlin, Germany), Thomas Magedanz, Anastasius Gavras, Nguyen Huu Thanh, Jeffry S. Chase (eds.), Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (LNICST), Volume 46, Pages 602-604, Springer, Berlin / Heidelberg / New York, May 2010.
• Amir Mehmood, Oliver Hohlfeld, Dan Levin, Andreas Wundsam, Florin Ciucu, Fabian Schneider, Anja Feldmann, Ralf-Peter Braun. The Routerlab - Emulating Internet Characteristics in a Room. In Proceedings of 11th ITG Conference on Photonic Networks (11. ITG-Fachtagung Photonische Netze), (Location: Leipzig, Germany), Pages 201-208, VDE-Verlag, Berlin / Offenbach, Germany, May 2010.

Flow routing

• Vlad Manilici, Andreas Wundsam, Anja Feldmann, Pablo Vidales. Potential benefit of flow-based routing in multihomed environments. European Transactions on Telecommunications (ETT), 20(7):650-659, 2009. PDF
• Vlad Manilici, Andreas Wundsam, Anja Feldmann, Petros Zerfos, Robert Sombrutzki, Jatinder Singh, Pablo Vidales. On the Potential of Flow-Based Routing in Multihomed Environments. Research Report Technische Universität Berlin, Fakultät Elektrotechnik und Informatik, No. 2009-02, February 2009. PDF