Flock: SDN控制器的热迁移协议

2019 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN) Pub Date : 2019-11-01 DOI:10.1109/NFV-SDN47374.2019.9040146

C. Contoli, Fabio Palumbo, Flavio Esposito, F. Callegati, A. Pescapé

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引用次数: 0

摘要

可用性是任何网络系统的基本操作挑战。软件定义网络(SDN)和网络功能虚拟化(NFV)系统也不例外。虽然在轻量级虚拟机实时迁移方面已经有了大量的工作，而且SDN控制器被认为只是在逻辑上集中，但是实时控制器迁移协议的规范还没有被编写出来。在本文中，我们提出了Flock的设计和实现，Flock是一个独立于底层软件定义基础设施的实时控制器迁移协议，这是每个相关解决方案所缺乏的特性。我们还提出了控制器开关分配问题，并证明除非P=NP，否则不存在求解该问题的伪多项式算法。我们对Ryu控制器的初步评估结果显示预期的最小协议开销。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Flock: A Live Migration Protocol for SDN Controllers

Availability is a fundamental operational challenge of any networked system. Software-Defined Networks (SDN) and Network Function Virtualization (NFV) systems are no exception. While extensive work exists on lightweight virtual machines live migration, and SDN controllers are claimed to be only logically centralized, specifications for a live controller migration protocol have not been written yet.In this paper, we propose the design and implementation of Flock, a live controller migration protocol that works independently from the underlying software-defined infrastructure, a feature lacking in every related solution. We also propose the controller-switch assignment problem and show that no pseudo-polynomial algorithm exists to solve it, unless P=NP. Our initial evaluation results with the Ryu controller show expected minimal protocol overhead.

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来源期刊

2019 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN)

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