Disruptive Technologies for Society 5.0

2 Software-Defined Networking: Evolution, Open Issues, and Challenges

Sukhvinder Singh and Preeti Gupta

Contents

2.1 Introduction

2.2 Software-Defined Network Architecture

2.3 Software-Defined Networks: Bottom-Up Scenario

2.3.1 Layer I: Network Infrastructure

2.3.2 Layer II: Southbound Interfaces

2.3.3 Layer III: Network Hypervisors

2.3.4 Layer IV: Controller (NOS)

2.3.5 Layer V: Northbound Interfaces

2.3.6 Layer VI: Language-Based Virtualization

2.3.7 Layer VII: Programming Language

2.3.8 Layer VIII: Network Application

2.4 SDN and Cloud Integration

2.5 Present Implementation and Challenges

2.6 SDN-Based Cloud Network

2.7 The Current State of SDN Implementation

2.8 Security Challenges in SDN

2.8.1 Switch-Level Security Challenges

2.8.2 Controller-Level ...