On consistent updates in software defined networks

Ratul Mahajan, Roger Wattenhofer
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引用次数: 186

Abstract

We argue for the development of efficient methods to update the data plane state of an SDN, while maintaining desired consistency properties (e.g., no packet should be dropped). We highlight the inherent trade-off between the strength of the consistency property and dependencies it imposes among rules at different switches; these dependencies fundamentally limit how quickly data plane can be updated. For one basic consistency property---no packet should loop---we develop an update algorithm that has provably minimal dependency structure. We also sketch a general architecture for consistent updates that separates the twin concerns of consistency and efficiency.
关于软件定义网络的一致更新
我们主张开发有效的方法来更新SDN的数据平面状态,同时保持所需的一致性属性(例如,不应该丢弃数据包)。我们强调了一致性属性的强度和它在不同开关的规则之间施加的依赖之间的内在权衡;这些依赖关系从根本上限制了数据平面的更新速度。对于一个基本的一致性属性——没有数据包应该循环——我们开发了一个更新算法,它具有可证明的最小依赖结构。我们还概述了一致更新的一般架构,将一致性和效率的双重关注点分开。
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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