Institute of Research and Journals (IRAJ)
In this paper, the authors define network virtualization concept and describes the Network-as-a-Service (NaaS) framework. Comparative study of two approaches VMware's NSX, a network virtualization and security platform for software defined data centers, and Cisco's Application Centric Infrastructure (ACI) have been done. The key concepts like flexibility, scalability, traffic management, security, and firewall, load balancing, smart caching have been addressed with the above mentioned approaches. The advantages and disadvantages of both the paradigms have been discussed elaborately. This paper aims to formulate a heterogeneous feasible architecture that can resolve the challenges faced by both these approaches.