Software-defined Wide Area Network Research Articles

Cloud-Centric and Logically Isolated Virtual Network Environment Based on Software-Defined Wide Area Network

Recent development of distributed cloud environments requires advanced network infrastructure in order to facilitate network automation, virtualization, high performance data transfer, and secured access of end-to-end resources across regional boundaries. In order to meet these innovative cloud networking requirements, software-defined wide area network (SD-WAN) is primarily demanded to converge distributed cloud resources (e.g., virtual machines (VMs)) in a programmable and intelligent manner over distant networks. Therefore, this paper proposes a logically isolated networking scheme designed to integrate distributed cloud resources to dynamic and on-demand virtual networking over SD-WAN. The performance evaluation and experimental results of the proposed scheme indicate that virtual network convergence time is minimized in two different network models such as: (1) an operating OpenFlow-oriented SD-WAN infrastructure (KREONET-S) which is deployed on the advanced national research network in Korea, and (2) Mininet-based experimental and emulated networks.

How to make SD-WAN secure

With the software-defined wide area network (SD-WAN), lower costs and increased efficiency are the promised payoffs. 1 , 2 But what about security concerns? Does this additional route into corporate systems open up new vulnerabilities and create fresh opportunities for attackers? With software-defined wide area networks (SD-WANs), lower costs and increased efficiency are the promised payoffs. But what about security concerns? Does this additional route into corporate systems open up new vulnerabilities and create fresh opportunities for attackers? While SD-WAN often routes traffic over the Internet, the underlying technologies are hardened, armoured and fully protected. And cloud-delivered SD-WAN platforms that offer integration with the industry's leading security platforms, enterprise IT and security staff can ensure that corporate data is protected and compliance regulations are met, explains Michael Wood of VeloCloud Networks.

Leveraging ONOS SDN Controllers for OF@TEIN SD-WAN Experiments

In this paper, we discuss on-going experiments at OF@TEIN Playground to evaluate the feasibility of SD-WAN (software-defined wide area network) solutions by leveraging open-source ONOS (open network operating systems) SDN controller. In order to explore efficient solutions in building SDN-enabled WAN, we utilize distributed cloud-based resources to inter-connect them by employing legacy-friendly L3 routing instead of L2-focused overlay tunnels.