A storage approach for OpenFlow switch based on Protocol Oblivious Forwarding

2016 IEEE Symposium on Computers and Communication (ISCC) Pub Date : 2016-06-27 DOI:10.1109/ISCC.2016.7543891

Jinghong Wu, Hong Ni, Xuewen Zeng, Liping Ding, Xiaozhou Ye

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引用次数: 3

Abstract

OpenFlow, which facilitates decoupling between the forwarding and control plane, is developing rapidly and has already been widely studied in various fields. OpenFlow switches perform certain actions under the guidance of flow tables, which are configured by the controller. Currently, most of the work based on OpenFlow switch is concerned with switching performance such as forwarding rate, forwarding latency and flow table efficiency. In contrast, little work has been done on storage for OpenFlow switches. However, directly imposing storage functionality on OpenFlow switches with large capacity storage devices will lead to a series of problems. The most protruding and apparent one is the degradation of forwarding rate, which is one of the most important figure of merits for OpenFlow switch. This paper analyses the typical problems in this context and proposes a novel storage approach based on Protocol Oblivious Forwarding (POF), which is an enhancement to OpenFlow-based SDN forwarding architecture. The preliminary experimental results on Linux-based POF soft switch validate the effectiveness and efficiency of our approach.

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一种基于协议无关转发的OpenFlow交换机存储方法

OpenFlow实现了转发平面和控制平面的解耦，发展迅速，已经在各个领域得到了广泛的研究。OpenFlow交换机在流表的指导下执行某些动作，流表由控制器配置。目前，基于OpenFlow交换机的大部分工作关注的是转发速率、转发延迟和流表效率等交换性能。相比之下，在OpenFlow交换机的存储方面做的工作很少。但是，直接将存储功能强加到具有大容量存储设备的OpenFlow交换机上会导致一系列问题。最突出和最明显的问题是转发速率的退化，这是OpenFlow交换机最重要的优点之一。本文分析了这方面的典型问题，提出了一种新的基于协议无关转发(POF)的存储方法，这是对基于openflow的SDN转发架构的改进。基于linux的POF软开关的初步实验结果验证了该方法的有效性和高效性。

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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2016 IEEE Symposium on Computers and Communication (ISCC)

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