PolicyCop: An Autonomic QoS Policy Enforcement Framework for Software Defined Networks

Md. Faizul Bari, S. R. Chowdhury, Reaz Ahmed, R. Boutaba
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引用次数: 149

Abstract

Network management is becoming increasingly challenging with the relentless growth in network size, traffic volume, and the diversity in QoS requirements. Traditionally, the concept of predefined Service Level Agreements (SLAs) has been utilized to establish QoS parameters. However, most state-of-the-art technologies in this area are both proprietary and inflexible. To this end, Software Defined Networking (SDN) has the potential to make network management tasks flexible, scalable, and an open platform to encourage innovation. In this paper, we present the design of PolicyCop, an open, flexible, and vendor agnostic QoS policy management framework targeted towards OpenFlow based SDN. PolicyCop provides an interface for specifying QoS SLAs and then exploits the control plane's API to enforce them. PolicyCop also monitors the network and autonomically readjusts network parameters to meet customer SLAs. We present experimental results to demonstrate PolicyCop's effectiveness in ensuring throughput, latency, and reliability guarantees.
PolicyCop:软件定义网络的自主QoS策略实施框架
随着网络规模、流量和QoS需求的不断增长,网络管理变得越来越具有挑战性。传统上,预定义的服务水平协议(sla)的概念被用来建立QoS参数。然而,这一领域的大多数先进技术都是专有的,而且缺乏灵活性。为此,软件定义网络(SDN)有可能使网络管理任务变得灵活、可扩展,并成为一个鼓励创新的开放平台。在本文中,我们提出了PolicyCop的设计,这是一个针对基于OpenFlow的SDN的开放、灵活且与供应商无关的QoS策略管理框架。PolicyCop提供了一个接口,用于指定QoS sla,然后利用控制平面的API来执行它们。PolicyCop还监视网络,并自动调整网络参数以满足客户的sla。我们给出了实验结果来证明PolicyCop在确保吞吐量、延迟和可靠性保证方面的有效性。
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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