Role Of Software-Defined Networking Research Articles

Cyber-Physical Systems: Prospects, Challenges and Role in Software-Defined Networking and Blockchains

In recent years, cyber-physical systems (CPSs) have gained a lot of attention from academia, industry and government agencies, considered to be the world’s third wave of information technology, following computers and the internet [...]

Software-Defined Networking: Categories, Analysis, and Future Directions.

Software-defined networking (SDN) is an innovative network architecture that splits the control and management planes from the data plane. It helps in simplifying network manageability and programmability, along with several other benefits. Due to the programmability features, SDN is gaining popularity in both academia and industry. However, this emerging paradigm has been facing diverse kinds of challenges during the SDN implementation process and with respect to adoption of existing technologies. This paper evaluates several existing approaches in SDN and compares and analyzes the findings. The paper is organized into seven categories, namely network testing and verification, flow rule installation mechanisms, network security and management issues related to SDN implementation, memory management studies, SDN simulators and emulators, SDN programming languages, and SDN controller platforms. Each category has significance in the implementation of SDN networks. During the implementation process, network testing and verification is very important to avoid packet violations and network inefficiencies. Similarly, consistent flow rule installation, especially in the case of policy change at the controller, needs to be carefully implemented. Effective network security and memory management, at both the network control and data planes, play a vital role in SDN. Furthermore, SDN simulation tools, controller platforms, and programming languages help academia and industry to implement and test their developed network applications. We also compare the existing SDN studies in detail in terms of classification and discuss their benefits and limitations. Finally, future research guidelines are provided, and the paper is concluded.

Network Tomography for Efficient Monitoring in SDN-Enabled 5G Networks and Beyond: Challenges and Opportunities

Efficient monitoring plays a vital role in software-defined networking (SDN)-enabled 5G networks, involving the monitoring of performance metrics for both physical and virtual networks and considering the requirements of a variety of traffic types originating from different applications. However, conventional network monitoring tools based on traditional IP-based mechanisms may not be able to keep up with the dynamic nature of 5G networks. Network tomography (NT) is an emerging monitoring approach that estimates network performance based on measurements realized at a limited subset of network elements, presenting benefits over traditional monitoring techniques, but susceptible to identifiability issues. In this article, we demonstrate how NT can respond to current monitoring challenges, complementing and working together with SDN, yielding accurate estimations with low overhead, while exploiting SDN capabilities such as the centralized view of the entire network, direct flow-level measurements, and controllable routing. Furthermore, we present the spectrum of applications of NT-based solutions in 5G networks and beyond, ranging from virtual to vehicular networks.

MARVEL: Enabling controller load balancing in software-defined networks with multi-agent reinforcement learning

The control plane plays a significant role in Software-Defined Networking (SDN). A large SDN usually implements its control plane with several distributed controllers, each controlling a subset of switches and synchronizing with other controllers to maintain a consistent network view. Under the fluctuating network traffic, a static controller-switch mapping relationship could lead to imbalanced workload allocation. Controllers may getoverloaded and reject new requests, eventually reducing the control plane's request processing ability. Most existing schemes have relied heavily on iterative optimization algorithms to manipulate the mapping relationship between controllers and switches, which are either time-consuming or less satisfactory in terms of performance. In this paper, we propose a dynamic controller workload balancing scheme, that is termed MARVEL, based on multi-agent reinforcement learning for generation of switch migration actions. MARVEL works in two phases: offline training and online decision making. In the training phase, each agent learns how to migrate switches through interacting with the network. In the online phase, MARVEL is deployed to make decisions on migrating switches. Experimental results show that MARVEL outperforms competing existing schemes by improving the control plane's request processing ability at least 27.3% while using 25% less processing time.

Cloud-MANET and its Role in Software-Defined Networking

Cloud-MANET and its Role in Software-Defined Networking

Software Defined Networking (SDN) and Network Function Virtualization (NFV)

The role of Software Defined Networking (SDN) and Network Function Virtualization (NFV) have been instrumental in realizing the transition and vision “from black boxes to a white box towards facilitating 5G network architectures”. Though significant research results and several deployments have occurred and realized over the last few years focusing on the NFV and SDN technologies, several issues—both of theoretical and practical importance—remain still open. Accordingly, the papers of this special issue are significant contributions samples within the general ecosystem highlighted above, ranging from SDN and NFV architectures and implementations, to SDN-NFV integration and orchestration approaches, while considering issues associated with optimization, network management and security aspects. In particular, a total of nine excellent articles (one review and eight original research articles) have been accepted, following a rigorous review process, and addressing many of the aforementioned challenges and beyond.

Cloud-MANET and its Role in Software-Defined Networking

The telecommunication networking technologies are changing day by day with the advancement of the existing technologies. In the proposed 5G networks, the role of Software-defined networking (SDN) is to provide programmable networking and decoupling the control and data plane. SDN comes from the requirement for providing the dynamic, high speed with low latency connectivity in real-time. This requirement introduces a new framework for creating programmable networking, decoupling forwarding and controlling planes, flexible real-time network, virtualizations in networking for managing the complexities in 5G heterogeneous networking. The emergence of virtualization has become the most useful technology for creating virtual machines remotely and apply security rules using programmable hardware to control centrally. In this article, the author discussed the cloud-based mobile ad hoc network (Cloud-MANET or sometimes called C-MANET) in the architecture of SDN for 5G heterogeneous networks. The main idea of creating the CMANET mobility model in the SDN framework is to enable programmable networking and accessibility for the moving devices in the range of MANET and cloud connectivity. In the framework of SDN, the C-MANET mobility model implementation is not an easy task, but it can be a very useful contribution to add this model in the framework of SDN so that it provides the connection service in that location where internet or cellular networks are impossible or at the situation of a disaster.

Low-Complexity Distributed SDN Controller Environments on Switch Migration Testbed

Control Path Management is an important component in the Distributed SDN Controller, and plays a key role in Software Defined Networking (SDN). Testbed simulations are done with an implementation of several controllers are deployed to improve the scalability and reliability of the control plane framework by employed network clustering into several subdomains with separate controllers. This paper investigates the deployment of distributed SDN controller but logically centralized systems for decouples control plane using Distributed Traffic Engineering mechanism. The results obtained show that the proposed mechanism can achieve controller load balancing with better performance.

Designing Resilient Hybrid Data Centers: Multi-Cloud Integration with Edge Computing for Improved Redundancy

As organizations adopt multi-cloud strategies to enhance operational agility, the integration of edge computing is emerging as a critical solution to address latency and redundancy challenges. This paper explores the architecture and design principles of hybrid data centers that seamlessly integrate cloud resources with edge nodes. It highlights the key considerations for ensuring redundancy, performance, and data sovereignty while managing distributed workloads. The study provides real-world case examples of hybrid data center deployments across different sectors, focusing on the role of software-defined networking (SDN) and network function virtualization (NFV). Furthermore, the paper identifies best practices and technological trends driving the adoption of hybrid architectures, including disaster recovery strategies, workload orchestration, and cross-platform security frameworks.

A Review on Role of Software-Defined Networking (SDN) in Cloud Infrastructure

A Review on Role of Software-Defined Networking (SDN) in Cloud Infrastructure