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Andreas Wundsam
Researcher at Switch
Publications - 23
Citations - 1210
Andreas Wundsam is an academic researcher from Switch. The author has contributed to research in topics: Troubleshooting & The Internet. The author has an hindex of 12, co-authored 23 publications receiving 1180 citations. Previous affiliations of Andreas Wundsam include University of California, Berkeley & International Computer Science Institute.
Papers
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Proceedings ArticleDOI
Logically centralized?: state distribution trade-offs in software defined networks
TL;DR: The state exchange points in a distributed SDN control plane are characterized and two key state distribution trade-offs are identified and simulated in the context of an existing SDN load balancer application.
Proceedings ArticleDOI
Network virtualization architecture: proposal and initial prototype
Gregor Schaffrath,Christoph Werle,Panagiotis Papadimitriou,Anja Feldmann,Roland Bless,Adam Greenhalgh,Andreas Wundsam,Mario Kind,Olaf Maennel,Laurent Mathy +9 more
TL;DR: A network virtualization architecture is described as a technology for enabling Internet innovation and some of its components are evaluated based on experimental results from a prototype implementation to gain insight about its viability.
Proceedings Article
OFRewind: enabling record and replay troubleshooting for networks
TL;DR: The design of OFRewind is presented, which enables scalable, multi-granularity, temporally consistent recording and coordinated replay in a network, with fine-grained, dynamic, centrally orchestrated control over both record and replay.
Proceedings ArticleDOI
Leveraging SDN layering to systematically troubleshoot networks
Brandon Heller,Colin Scott,Nick McKeown,Scott Shenker,Andreas Wundsam,Hongyi Zeng,Sam Whitlock,Vimalkumar Jeyakumar,Nikhil Handigol,James McCauley,Kyriakos Zarifis,Peyman Kazemian +11 more
TL;DR: This position paper advocates a more structured troubleshooting approach that leverages architectural layering in Software-Defined Networks (SDNs), and shows how recently-developed troubleshooting tools fit into a coherent workflow that detects mistranslations between layers to precisely localize sources of errant control logic.
Proceedings ArticleDOI
Troubleshooting blackbox SDN control software with minimal causal sequences
Colin Scott,Andreas Wundsam,Barath Raghavan,Aurojit Panda,Andrew Or,Jefferson Lai,Eugene Huang,Zhi Liu,Ahmed El-Hassany,Sam Whitlock,Hrishikesh B. Acharya,Kyriakos Zarifis,Scott Shenker +12 more
TL;DR: This paper presents a technique for automatically identifying a minimal sequence of inputs responsible for triggering a given bug, without making assumptions about the language or instrumentation of the software under test.