Yufeng Jia, Jiadong Ren, Haitao He, Xianshan Li, Pengwei Zhang, Rong Li
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引用次数: 0
Abstract
Due to the asynchronous nature of software-defined networking (SDN), existing flow installation models face a common issue: data packets often reach intermediate switches before the corresponding flow rules are installed. In such cases, the switch either discards the packets or forwards them to the controller, leading to bandwidth waste and increased flow latency; this is unacceptable in networks with stringent latency requirements. This article proposes a new architecture that enables low-latency flow transmission and is compatible with all flow installation models. It achieves a closed-loop of flow migration between the control and the data plane. This greatly enhances the flexibility and resilience of SDN. We present two solutions: first, we scientifically tested the approach's feasibility through experiments, identifying the balance point of controller flow load. Second, we use a simple and existing optimization strategy to reduce SDN resource consumption, improving performance to meet practical application standards. It reduces latency by 66.03% compared with the traditional method and 73.47% compared with the EFastLane method. To our knowledge, we are the first to explore how to implement flow migration to the controller. This architecture is compatible with all flow installation models and can be used in various scenarios to improve the efficiency and reliability of SDN. Our findings should facilitate further progress in deploying SDN in real-world networks.
由于软件定义网络(SDN)的异步特性,现有的流量安装模型面临着一个共同的问题:数据包往往在安装相应的流量规则之前就已到达中间交换机。在这种情况下,交换机要么丢弃数据包,要么将其转发给控制器,导致带宽浪费和流量延迟增加;这在对延迟有严格要求的网络中是不可接受的。本文提出了一种能实现低延迟流量传输并兼容所有流量安装模式的新架构。它在控制平面和数据平面之间实现了流量迁移的闭环。这大大增强了 SDN 的灵活性和弹性。我们提出了两个解决方案:首先,我们通过实验科学地测试了该方法的可行性,确定了控制器流量负载的平衡点。其次,我们利用现有的简单优化策略来减少 SDN 资源消耗,提高性能以满足实际应用标准。与传统方法相比,该方法的延迟降低了 66.03%,与 EFastLane 方法相比,延迟降低了 73.47%。据我们所知,我们是第一个探索如何将流量迁移到控制器的人。这种架构与所有流量安装模型兼容,可用于各种场景,以提高 SDN 的效率和可靠性。我们的研究成果将推动在现实网络中部署 SDN 的进一步发展。
期刊介绍:
ransactions on Emerging Telecommunications Technologies (ETT), formerly known as European Transactions on Telecommunications (ETT), has the following aims:
- to attract cutting-edge publications from leading researchers and research groups around the world
- to become a highly cited source of timely research findings in emerging fields of telecommunications
- to limit revision and publication cycles to a few months and thus significantly increase attractiveness to publish
- to become the leading journal for publishing the latest developments in telecommunications