文章基本信息

标题：On the Modeling of Open Flowbased SDNS: The Single Node Case
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作者：Kashif Mahmood ; Ameen Chilwan ; Olav N. Østerbø 等
期刊名称：Computer Science & Information Technology
电子版ISSN：2231-5403
出版年度：2014
卷号：4
期号：11
页码：207-217
DOI：10.5121/csit.2014.41120
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：OpenFlow is one of the most commonly used protocols for communication between thecontroller and the forwarding element in a software defined network (SDN). A model based onM/M/1 queues is proposed in [1] to capture the communication between the forwarding elementand the controller. Albeit the model provides useful insight, it is accurate only for the case whenthe probability of expecting a new flow is small.Secondly, it is not straight forward to extend the model in [1] to more than one forwardingelement in the data plane. In this work we propose a model which addresses both thesechallenges. The model is based on Jackson assumption but with corrections tailored to theOpenFlow based SDN network. Performance analysis using the proposed model indicates thatthe model is accurate even for the case when the probability of new flow is quite large. Furtherwe show by a toy example that the model can be extended to more than one node in the dataplane.
关键词：OpenFlow; Performance analysis; Queuing theory; Software defined networks.