Renaissance: A self-stabilizing distributed SDN control plane
Paper i proceeding, 2018

By introducing programmability, automated verification, and innovative debugging tools, Software-Defined Networks (SDNs) are poised to meet the increasingly stringent dependability requirements of today's communication networks. However, the design of fault-tolerant SDNs remains an open challenge. This paper considers the design of dependable SDNs through the lenses of self-stabilization - a very strong notion of fault-tolerance. In particular, we develop algorithms for an in-band and distributed control plane for SDNs, called Renaissance, which tolerates a wide range of (concurrent) controller, link, and communication failures. Our self-stabilizing algorithms ensure that after the occurrence of an arbitrary combination of failures, (i) every non-faulty SDN controller can eventually reach any switch in the network within a bounded communication delay (in the presence of a bounded number of concurrent failures) and (ii) every switch is managed by at least one non-faulty controller. We evaluate Renaissance through a rigorous worst-case analysis as well as a prototype implementation (based on OVS and Floodlight), and we report on our experiments using Mininet.

Software Defined Networks

Fault tolerance

Self stabilization


M. Canini

Universite catholique de Louvain

Iosif Salem

Chalmers, Data- och informationsteknik, Nätverk och system

L. Schiff

GuardiCore Labs

Elad Schiller

Chalmers, Data- och informationsteknik, Nätverk och system

Stefan Schmid

Universität Wien

Proceedings - International Conference on Distributed Computing Systems

2575-8411 (eISSN)

Vol. 2018-July 233-243

38th IEEE International Conference on Distributed Computing Systems, ICDCS 2018
Vienna, Austria,







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