Software-Defined Networking (SDN) is a fundamental paradigm shift in communication networks, separating the network control and data planes. This separation enables the dynamic reconfiguration of the data plane at run-time through control plane software. The logically centralized control plane – the network brain – is typically realized in a distributed fashion to avoid a single point of failure, to provide redundancy of key control plane functions vis-a-vis the data plane and to provide horizontal scale-out. As SDN begins to be adopted as the underlying paradigm and platform for carrier-grade networks through the advent of open-source SDN controllers, a deep understanding of the reliability of SDNs is essential to satisfying carrier-grade requirements and fulfilling service-level agreements. To this end, we present a model of SDN reliability under control and data plane failures, that encompasses the distributed nature of the SDN control plane.<\/p>\n","protected":false},"excerpt":{"rendered":"
Software-Defined Networking (SDN) is a fundamental paradigm shift in communication networks, separating the network control and data planes. This separation enables the dynamic reconfiguration of the data plane at run-time through control plane software. The logically centralized control plane – the network brain – is typically realized in a distributed fashion to avoid a single […]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":null,"msr_publishername":"IEEE","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"","msr_journal":"","msr_number":"","msr_organization":"IEEE","msr_pages_string":"","msr_page_range_start":"","msr_page_range_end":"","msr_series":"","msr_volume":"","msr_copyright":"","msr_conference_name":"2018 IEEE International Symposium on Software Reliability Engineering Workshops 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