Software Defined Networking and its Challenges

Asian Journal of Research in Computer Science, 2021

The Internet has caused the advent of a digital society; wherein almost everything is connected and available from any place. Thus, regardless of their extensive adoption, traditional IP networks are yet complicated and arduous to operate. Therefore, there is difficulty in configuring the network in line with the predefined procedures and responding to the load modifications and faults through network reconfiguring. The current networks are likewise vertically incorporated to make matters far more complicated: the control and data planes are bundled collectively. Software-Defined Networking (SDN) is an emerging concept which aims to change this situation by breaking vertical incorporation, promoting the logical centralization of the network control, separating the network control logic from the basic switches and routers, and enabling the network programming. The segregation of concerns identified between the policies concept of network, their implementation in hardware switching and data forwarding is essential to the flexibility required: SDN makes it less Review Article complicated and facilitates to make and introduce new concepts in networking through breaking the issue of the network control into tractable parts, simplifies the network management and facilitate the development of the network. In this paper, the SDN is reviewed; it introduces SDN, explaining its core concepts, how it varies from traditional Furthermore, we presented the crucial advantages and challenges of SDN security, flexibility, and performance. Finally, a brief conclusion of SDN is revised.

Journal of emerging technologies and innovative research, 2021

Traditional networks are very complex and arduous to manage. It uses fixed and dedicated infrastructure devices such as routers and switches to control network traffic and are also vertically integrated i.e. there is a strong coupling between control and data planes. The functionality of the traditional network mostly implemented on dedicated infrastructure devices so deploying new services and protocols is a challenging tasks because all the switches need to be updated or replaced manually. The main idea behind Software Defined Networks (SDN) is to separate the control plane from the data plane and move it to a centralized server known as controller. In this paper, an introduction to Software Defined Networking is presented. In SDN (Software Defined Networking), the whole intelligence lies in the controller that programmatically control the underlying hardware devices. This paper also covers the introduction of SDN, SDN Architecture, SDN Controller, Characteristics of various SDN controller and SDN controller service.

Software defined network (SDN) is the revolutionary technology in the Networking atmosphere. It finds its roots in programmable network and control-data-infrastructure plane separation which provides network management as well as network automation. This technology encourages programmability of the network which in turns reduces the cost of operation and increases efficiency. The objective of this paper is to study the various investigations going to understand and evaluate SDN characteristics and benefits. In this paper we will be exploring SDN architecture, SDN related taxonomy and challenges SDN implementation face now and in future.

—Emerging mega-trends (e.g., mobile, social, cloud, and big data) in information and communication technologies (ICT) are commanding new challenges to future Internet, for which ubiquitous accessibility, high bandwidth, and dynamic management are crucial. However, traditional approaches based on manual configuration of proprietary devices are cumbersome and error-prone, and they cannot fully utilize the capability of physical network infrastructure. Recently, software-defined networking (SDN) has been touted as one of the most promising solutions for future Internet. SDN is characterized by its two distinguished features, including decoupling the control plane from the data plane and providing programmability for network application development. As a result, SDN is positioned to provide more efficient configuration, better performance, and higher flexibility to accommodate innovative network designs. This paper surveys latest developments in this active research area of SDN. We first present a generally accepted definition for SDN with the afore-mentioned two characteristic features and potential benefits of SDN. We then dwell on its three-layer architecture, including an infrastructure layer, a control layer, and an application layer, and substantiate each layer with existing research efforts and its related research areas. We follow that with an overview of the de facto SDN implementation (i.e., OpenFlow). Finally, we conclude this survey paper with some suggested open research challenges.

Legacy IP networks are complex, difficult to manage and are also vertically integrated i.e. the control and data planes are bundled together. The concept behind Software Defined Networks (SDN) is to break the vertical integration, by separating the network control logic from its underlying hardware, (routers and switches) promoting (logical) centralization of network control, and introducing the ability to program the network. In this paper, we start by introducing the motivation for SDN, its architecture and how it differs from traditional networking. Open flow is discussed next and SDN simulation tools are also discussed. The applications and main ongoing research efforts and challenges of SDN are also mentioned.

— Software-Defined Networking (SDN) is a new networking paradigm in network technologies in which the data plane and network plane are separated. This new technology began to be widely used in last few years and studies started to increase on this new technology. The communication scheme of the network consists mainly of the controller and programmable OpenFlow switches. The centralized controller can be considered as the brain of the network which is basically responsible on determining the path of the incoming packet by informing the switches to route that packet in the right direction. In this paper, a complete definition and description have been shown and a survey study on the SDN has been presented based on different types of studies have been already made historically. An overview on the simulators used to implement these networks has also been shown.

Today’s resource-intensive application causes network traffic to grow extensively putting high demand on the existing network. Meeting current market requirements is virtually impossible with traditional network architectures. Existing network architectures were not designed to meet the requirements of users. As a result, there is a need for solution to make the network application aware by intelligently monitoring and routing the network traffic.SDN makes it possible to manage the entire network through intelligent orchestration and provisioning systems. SDN is an approach to programmable network that separates and abstracts some of the control pane functions from the network devices and places them in a centralized controller. SDN is a step in the evolution towards programmable and active networking. Software defined networks provides necessary components to make the network programmable, dynamic and application aware.SDN is often referred to as a “radical new idea of networking”. The future of networking will rely more and more on software, which will accelerate the pace of innovation in computing and storage domains. Here in this paper, we discuss what SDN could provide to transform today’s static network into flexible, programmable platforms with the intelligence to allocate resources dynamically.

This paper will give an idea about Software defined networking(SDN) & to make familiar with this upcomming technology. Since its an emerging technology under computer networking.Here is an overview as to how SDN is better than traditional IP networks.Implementation of SDN would be great since the programming ability can be done on a single controller and the network administrator can have a abstract view over the network.

This paper explains about the basic concept of Software Defined Network (SDN). The paper also lists and discuss about the details of two sample products of Software Defined Network. Besides that, this paper also list out the details on the main issues and challenges of Software Defined Network. Finally this paper summarized on the importance and the future of the Software Defined Network in the development of network performance in the business world.

IJCSMS (International Journal of Computer Science & Management Studies) Vol. 19, Issue 01, 2015

Internet and mainly today's computer network environment, has seen a powerful evolution and success. But contradictory with this, engineers and architects, have concluded that as result of its ossification, internet is becoming more and more difficult to develop and move forward. Different vendors, with different technology, have emerged Internet in a situation in which we can deal with, only if a broad understanding and convergence is achieved between, the two main actors: R&D community and the investors. But what happened is that as the time flew, the academic researchers, found more and more less space to contribute and to share they ideas. All this has occurred during the past ten years, where the internet found his major development, from several factors. Among them I will discuss the most important and with the most significative contribution and also will introduce the Software-Defined Networks model. This model will be briefly analyzed in a position paper with his major strengths and weaknesses over the today model of Internet.