How Software Defined Networking For Providing Infrastructure As A Service

Software defined networking is a new concept that redefined the current network device architecture and the way they behave. Due to the exponential growth of the Internet and services attached to this worldwide infrastructure, a number of issues have cropped up in modern day networks. This paper discusses a few of these limitations and how the software defined networking approach tries to alleviate them. OpenFlow, released in the year 2008, is a commercially viable implementation of this concept that is being well received by the networking industry at large. The paper also discusses the OpenFlow protocol, its implementation and the challenges facing its widespread acceptance

Software-defined networking (SDN) is next evolving technology for the cloud computing as it provides a centralized system to manage the network. Scalable monitoring and dynamic reconfiguration requirements of the network makes SDN a perfect choice (Amna Riaz 2017).

Software-defined networking (SDN) promises something akin to enterprise networking utopia by separating the control panel from the physical network topology to create an environment where all switches and routers take their traffic forwarding cues from a centralized management controller. In a software-defined networking environment, this software-based controller must have an end-to-end view of network resources and capacity.

Progress in the field of technology and its development as growing number of users, high demand of internet services with the minimum use of network and absorbing broad server resources forced Google to come up with a new resolving problems idea - cloud computing. In 2011 The National Institute of Standards and Technology (NIST) defined five essential characteristics and three main services of cloud computing :

Latest trends such as mobiles, IT-as-a-Service, Server Virtualization and the requirement to respond rapidly to developing business conditions are placing demands on the network, which cannot be handled by today’s conventional network architectures. Software-Defined Networking proposes new approach to avoid the traditional vertically integrated networking stack in order to improve the present basic network architecture by improving architectural flexibility and manageability. SDN enables “mass customization” of network operations to better support differentiated services. With this technology a single program can control the behavior of entire networks.

Cloud computing, has opened a new potentiality for technology and computer science of the future. In recent years, IT industry has completely evolved from its demand for the purchase of software, hardware and information systems. Information architecture is provided these days as a service, which is divided into three main segments: "Applications", "Platform" and "Infrastructure”. The main goal of cloud computing is to provide users with a more flexible and scalable computing applications, data storage and the platform in a transparent manner. By using cloud-computing platform, organizations can easily capture and deploy the necessary services and operations with the help of the Internet, but without the need to configure

The demand for Cloud based services has greatly increased, because organizations are seeing the need to roll out virtualization and Software Define Networking (SDN) related systems. This can be attributed to the need for efficient usage of resources and the demand for better security mechanisms. Software Defined Networking (SDN) has gained recognition as being able to support dynamic future networks through the better use of resources coupled with lower operating costs. This development is possible by the use of a simplified hardware and better software management capabilities.

Virtualization has made network management more challenging, and it’s more and more difficult to consistently apply firewall and content filtering policies. When you add in complexities such as securing BYOD devices, the security problem is intensified. Software-defined networking (SDN) is next evolving technology for the cloud computing. SDN is an umbrella term covering several kinds of network technology aimed at making the network as agile and flexible as the virtualized server and storage infrastructure of the modern data center. The SDN Controller provides a centralized system to manage the network. The network administrators are empowered by SDN to easily access and manage individual flows by facilitating them to implement monitoring applications, i.e., firewall and IDS. Furthermore, scalable monitoring and dynamic reconfiguration requirements of the network in cloud makes SDN a perfect choice (Amna Riaz 2017).

Today we are living in the era of internet where everything depends on it. As the days and years passes, traffic on internet is increasing abundantly, users wants high speed internet which can give the result of their aspired question within a fraction of seconds. To accomplish the requirement of the user, the need for improvement of existing network architecture. Here comes the role of SDN which is an emerging network architecture, our project is based on it which is discussed in later chapters. In the introduction part we are going to check about SDN and its related components.

The network infrastructure industry is evolving and following a path of first generation server hardware to application-specific servers to virtual machines. The second generation is migrating from function-specific network hardware to software-based virtual functions. Now, software defined networking (SDN) offers nearly infinite economies of scale by replacing expensive networking hardware with software. SDN moves network control out of hardware devices onto a software infrastructure, thus decoupling traditional hardware functions from closed proprietary software thereby providing extensive agility to network and data center operators. One of the key enablers

Cloud administrations are blasting and organizations are uniting their server farms all together to exploit the consistency, coherence and quality of the service. As the demand of network challenges and traffic increases network operator require new solutions. Software Defined Networking has emerged as the major player with potential solution.

Software-defined networking (SDN) technology is an approach to computer networking that allows network administrators to programmatically initialize, control, change, and manage network behavior dynamically via open interfaces and provide abstraction of lower-level functionality. SDN is meant to address the fact that the static architecture of traditional networks doesn't support the dynamic, scalable computing and storage needs of more modern computing environments such as data centers. This is done by decoupling or disassociating the system that makes decisions about where traffic is sent (the SDN controller, or control plane) from the underlying systems that forward traffic to the selected

To reduce networks problem, we can use Software Defined Network. Software-Defined Networking (SDN) is an outgoing architecture that is progressive, manageable, cost-effective, and painful, making it ideal for the high-bandwidth, cheaper to build, powerfully faster and more skilled dynamic nature of today 's applications [2]. SDN demands to reduce this effort dramatically [4]. SDN is called the birds-eye perspective on a network. The idea behind it is middle "intelligence" that is able to looking the big picture and is thus able to control and optimistic data streams better and efficiently. Adopting an SDN methodology has a countless of benefits including facility, scalability, thickness, and performance [4]. In addition, a growing network

Enhancing a cloud based network could mean to make the network faster, safer, efficient, cost-effective and user friendly. The aim of this report is to discuss the methods and techniques of trying to improve a cloud based network and what this could mean.

The concept Initially was focused on decoupling of the network control plane from the network forwarding plane. Eventually the focus shifted to providing programmatic interfaces into network equipment, which provides a broader value to it. Looked at this way, SDN allows IT organizations to replace a manual interface into networking equipment with a programmatic interface that can enable the automation of tasks such as configuration and policy management and can also enable the network to dynamically respond to application requirements.