Today’s emerging needs (Internet of Things applications, Network Function Virtualization services, Mobile Edge computing, etc.) are challenging the classic approach of deploying a few large data centers to provide cloud services. A massively distributed Cloud-Edge architecture could better fit these new trends’ requirements and constraints by deploying on-demand infrastructure services in Point-of-Presences within backbone networks. In this context, a key feature is establishing connectivity among several resource managers in charge of operating, each one a subset of the infrastructure. After explaining the networking management challenges related to distributed Cloud-Edge infrastructures, this article surveys and analyzes the characteristics and limitations of existing technologies in the Software Defined Network field that could be used to provide the inter-site connectivity feature. We also introduce Kubernetes, the new de facto container orchestrator platform, and analyze its use in the proposed context. This survey is concluded by providing a discussion about some research directions in the field of SDN applied to distributed Cloud-Edge infrastructures’ management.

中文翻译：

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分布式云边缘基础设施的分散式SDN控制平面：一项调查

当今的新兴需求（物联网应用程序，网络功能虚拟化服务，移动边缘计算等）正在挑战部署一些大型数据中心以提供云服务的经典方法。大规模分布的Cloud-Edge体系结构可以通过在骨干网中的存在点中部署按需基础架构服务来更好地适应这些新趋势的要求和约束。在这种情况下，一项关键功能是在负责运营的多个资源管理器之间建立连接，每个资源管理器都是基础架构的一个子集。在解释了与分布式Cloud-Edge基础架构相关的网络管理挑战之后，本文调查并分析了“软件定义网络”字段中可用于提供站点间连接功能的现有技术的特征和局限性。我们还将介绍新的事实上的容器协调器平台Kubernetes，并在建议的上下文中分析其使用。通过对SDN领域中应用于分布式Cloud-Edge基础架构管理的一些研究方向进行讨论，来结束本调查。