Performance Modelling of Service Function Chaining in Distributed Controllers Secure Black SDN with NFV Architecture

Abstract

Data and control plane are separated by  Software Defined Networking (SDN) while Network Function Virtualization(NFV)  provides an abstraction of network functions from implemented hardware such as firewalls, load balancers, inspectors through software components located in telecom industry .Secure black SDN architecture with NFV implementation is proposed in this paper which provides better security ,reliability ,energy savings and load balancing .This architecture allows switches to interact with Virtual Network Function’s (VNF) directly without controller’s intervention .Service Function Chaining (SFC) is implemented for efficient resource abstraction and dynamic quality of service for end users. Enhanced Viterbi, an efficient routing algorithm is formulated for changing flow characteristics in accordance to increasing network traffic in SDN/NFV architecture with SFC implementation. Requests with more resource occupancy are eliminated to reduce complexity based on three metrics such as bandwidth, SFC and network delay. Simulation results shows novel modelling and analysis carried out on SFC in secure black SDN/NFV achieves network delay reduction of 33% with increased acceptance rate and throughput providing guaranteed quality of service to end users.

Keywords-Software Defined Networking (SDN); Network Function Virtualization (NFV); Service Function Chaining(SFC); Enhanced Viterbi Algorithm.