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Software-Defined Networking relies on the controller as its main element. Therefore, it is critical for the controller presenting features that improve the overall network performance while ensuring continuity of service despite failures. OpenDayLight (ODL) and Open Network Operating System (ONOS) are two important open-source and distributed controllers. The objective of this paper is to evaluate how ODL and ONOS deal with different failures scenarios in their data plane. The evaluation analyzes both link and switches failures and recoveries, with different flows in reactive and proactive mode. Experimental results show the time the controllers take to circumvent and detect faults, forward traffic to redundant paths, and identify the return of links and switches.

Uma Avaliação sobre a Tolerância a Falhas no Plano de Dados em Controladores SDN