Performance issues and solutions in SDN-based data center: a survey
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Performance issues and solutions in SDN‑based data center: a survey Alireza Shirmarz1 · Ali Ghaffari2
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Due to the development of the Internet and the smart end systems such as smartphones, portable laptop, and other smart mobile devices, as well as the emergence of concepts such as cloud computing, social networks, and Internet of Things, 4G and 5G have changed network requirements. A software-defined network (SDN) is a new architecture to support new network requirements. This architecture is composed of three layers, data, control, and application plane. A lot of papers have been published in well-known journals to improve network performance, so we classify the solutions for performance improvement based on three SDN layers and three SDN-based spheres which are (a) SDN-data center, (b) wireless networks, and (c) software-defined wide area network. This paper surveys the articles which have been published by Springer, IEEE, Elsevier, and ACM. We extract the performance improvement solutions and resources which are required for performance control and the metrics to evaluate the network performance. This article can help network enthusiasts to better understand, investigate, and improve the performance of SDNbased networks. Keywords Software-defined network · Network performance · Forwarding element (FE) · Controller and application
* Ali Ghaffari [email protected] Alireza Shirmarz A.shirmarz@iau‑tnb.ac.ir 1
Department of Computer Engineering, North Tehran Branch, Islamic Azad University, Tehran, Iran
2
Department of Computer Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
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A. Shirmarz, A. Ghaffari
1 Introduction The growth of the Internet is fast and has changed IT (information technology) requirements. The number of mobile end systems is increasing and is accelerating the use of the Internet by this equipment. Therefore, services diversity has created various network traffic requirements based on demand, which have caused needs for agility and flexibility in networks. To provide agility and flexibility in the network, the SDN architecture is needed. Some networks which need more agility and flexibility because of the high service demand rate are cellular network 4G and 5G, IoT, cloud computing, data center inter- and intra-network, and optical network. The traditional networks cannot support new network requirements, and they should be changed into architecture with innovation capability. The scalability and the on-demand services in cloud computing, big data, security, and node mobility in computer networks are opening rapidly; the demand for supporting these concepts is on the rise. The traditional network architecture is gradually challenging problems that should be solved for the future networks. To prevail these shortages, there has been a lot of interest in both universities and industries in the future networks researching. To consider security in new concepts like cloud
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