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Abstract The increase in the number of SDN-based de The increase in the number of SDN-based deployments in production networks is triggering the need to consider fault-tolerant designs of controller architectures. Commercial SDN controller solutions incorporate fault tolerance, but there has been little discussion in the SDN community on the design of such systems and the tradeoffs involved. To fill this gap, we present a by-construction design of a fault-tolerant controller, and materialize it by proposing and formalizing a practical architecture for small to medium-sized networks. A central component of our design is a replicated shared database that stores all network state. Contrary to the more common primary-backup approaches, the proposed design guarantees a smooth transition in case of failures and avoids the need of an additional coordination service. Our preliminary results show that the performance of our solution fulfills the demands of the target networks. We hope this work to be a first step in what we consider a necessary discussion on how to build robust SDNs. ry discussion on how to build robust SDNs.
Address Budapest, Hungary  +
Author Fabio Botelho + , Alysson Bessani + , Fernando Ramos + , Paulo Ferreira +
Booktitle Proceedings of the 3rd European Workshop on Software Defined Networks (EWSDN)  +
Document Document for Publication-Botelho2014ewsdn.pdf +
Key Botelho2014ewsdn  +
Month sep  +
NumPubDate 2,014.09  +
Project Project:BioBankCloud +
ResearchLine Fault and Intrusion Tolerance in Open Distributed Systems (FIT) +
Title On the Design of Practical Fault-Tolerant SDN Controllers  +
Type inproceedings  +
Year 2014  +
Has improper value forThis property is a special property in this wiki. Url  +
Categories Publication  +
Modification dateThis property is a special property in this wiki. 23 July 2015 01:48:15  +
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