Software Defined Networking Applications Research Articles

Security in Software Defined Networks: A Survey

Software defined networking (SDN) decouples the network control and data planes. The network intelligence and state are logically centralized and the underlying network infrastructure is abstracted from applications. SDN enhances network security by means of global visibility of the network state where a conflict can be easily resolved from the logically centralized control plane. Hence, the SDN architecture empowers networks to actively monitor traffic and diagnose threats to facilitates network forensics, security policy alteration, and security service insertion. The separation of the control and data planes, however, opens security challenges, such as man-in-the middle attacks, denial of service (DoS) attacks, and saturation attacks. In this paper, we analyze security threats to application, control, and data planes of SDN. The security platforms that secure each of the planes are described followed by various security approaches for network-wide security in SDN. SDN security is analyzed according to security dimensions of the ITU-T recommendation, as well as, by the costs of security solutions. In a nutshell, this paper highlights the present and future security challenges in SDN and future directions for secure SDN.

SDN 응용 검증을 위한 프로세스 알지브라 기반 정형 기법

최근 SDN (Software Defined Networking) 기반의 다양한 네트워크 제어 및 관리 플랫폼들이 서비스제공자 및 통신사업자들에 의해 연구되고 있다. SDN의 중요한 특징 중 하나는 소프트웨어 프로그램으로 작성된 간단한 응용에 의해 네트워크가 쉽게 제어되고 관리된다는 점에 있다. 이러한 관점에서 잘못 작성된 SDN 응용은 네트워크 전체에 오류를 발생시킬 수 있어, 해당 응용은 작성된 오픈플로우 포워딩 규칙(rule)을 SDN 컨트롤러(controller)를 통해 스위치에 반영하기 전에 토폴로지와 네트워크 환경의 안전성(safety)과 일관성(consistency)이 반드시 검증되어야 한다. 본 논문에서는 SDN 응용 검증을 위한 프로세스 알지브라 (process algebra) 기반의 언어인 pACSR (Packet based Algebra of Communicating Shared Resources)와 이를 기반으로 한 정형 검증 프레임워크를 제안하고, 이에 대한 SDN 정형검증 도구 연구시제품 구현 현황을 기술한다. Recently, there have been continuous efforts and progresses regarding the research on diverse network control and management platforms for SDN (Software Defined Networking). SDN is defined as a new technology to enable service providers/network operators easily to control and manage their networks by writing a simple application program. In SDN, incomplete or malicious programmable entities could cause break-down of underlying networks shared by heterogeneous devices and stake-holders. In this sense, any misunderstanding or diverse interpretations should be completely avoided. This paper proposes a new framework for SDN application verification and a prototype based on the formal method, especially with process algebra called pACSR which is an extended version of Algebra of Communicating Shared Resources (ACSR).

Providing Optical Network as a Service with Policy-based Transport SDN

This paper presents a novel policy-based mechanism to provide context-aware network-wide policies to Software Defined Networking (SDN) applications, implemented with a policy flow based on property graph models. The proposal has been validated in a transport SDN controller, supporting optical network virtualization via slicing of physical resources such as nodes, links and wavelengths, through use case testbed demonstrations of policy enforcement for SDN applications, including optical equalization and virtual optical network control. Additionally, the policy engine incorporates a simulation-assisted pre-setting mechanism for local policy decisions in case of problems in communication with the controller.

Research on the Application of Software Defined Network in Electric Power Data Communication Network

Software defined network (SDN) is a new architecture of network. The design concept of SDN is the separation of network control plane and forwarding plane and the realization of programmable control. Standford University put forward the concept of openflow in 2007, it provides standard interfaces and separates the data forwarding and routing control function of the traditional network communication equipment by the flow control method. The article makes a deep research on SDN from the aspects of technical connotation, equipment model and etc. It also makes a research on the actual demand and the existing problems of electric power data communication network of which the application of SDN in electric power data communication network is discussed.

Adaptive scheduling algorithm for media-optimized traffic management in software defined networks

Multi-policy resource management have been considered as an efficient methodology for delivering ready-to-use media-optimized applications in Software-Defined Networks (SDNs). Prioritized flow sche...

The Inter-Datacenter Connection in SDN and Traditional Hybrid Network

With the extensive application and continuous growth of big data, new challenges are imposed into network design. Without enough consideration of big data in traditional design, bottleneck problems will occur frequently in such IT infrastructure. SDN (Software Defined Network) is one of the solutions to conquer such problems. However, most current SDN applications are limited to pure SDN structure or internal data centers. Differently, we focus on the traffic transmission between data centers in this paper. We construct the WAN links between data centers through VPN based on SDN architecture and traditional network. Both theoretical analysis and experiment results show that SDN had advantage over traditional network. Our work also suggested SDN architecture and traditional network could coexist in the real condition.

Guest editorial: Software defined networking

A major recent development in computer networking is the emergence of Software Defi ned Networking (SDN), whose goal is to provide a centralized, programmable control plane that is decoupled from the distributed data planes on individual network devices. In particular, the development of OpenFlow has demonstrated many potential benefits of SDN, and multiple vendors have started to offer commercial switches supporting the OpenFlow standard. Researchers have also made progress on SDN components including SDN controllers, switches, programming interfaces, verification and debugging tools, and SDN applications in data center networks and campus networks. Despite the progress, many important issues regarding SDN remain. The goal of this Special Topic Issue is to explore research and developments related to SDN to further its state of art.

The network test tools based on SDN

Based on Software defined network (SDN), we brought up the NetWork Test Tools for communication networks. It is an innovative application of SDN, which can support the application traffic test.

A Survey of Software-Defined Networking: Past, Present, and Future of Programmable Networks

The idea of programmable networks has recently re-gained considerable momentum due to the emergence of the Software-Defined Networking (SDN) paradigm. SDN, often referred to as a "radical new idea in networking", promises to dramatically simplify network management and enable innovation through network programmability. This paper surveys the state-of-the-art in programmable networks with an emphasis on SDN. We provide a historic perspective of programmable networks from early ideas to recent developments. Then we present the SDN architecture and the OpenFlow standard in particular, discuss current alternatives for implementation and testing of SDN-based protocols and services, examine current and future SDN applications, and explore promising research directions based on the SDN paradigm.