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Fault Isolation in SDN Networks

Software Defined Networking (SDN) is a novel paradigm for managing the computer networks. By supporting a logically centralized point of control, it has the potential for simplifying network management. For instance, it makes easier to use tools that analyse SDN configurations and automatically validate that these configurations can preserve target invariants on the data plane. However, such tools cannot cope with unpredictable hardware and software faults that occur in run-time. Thus, tools that help to localize faults in SDN networks are still required. This work makes a survey of the state of the art in debugging tools for SDN networks and proposes a research plan that aims at improving those tools.