nges in NFV implementation is also a concern today, which is a part of this chapter. Chapter 9 Quality of Service in SDN Technology Ankur Dumka, University of Petroleum and Energy Studies, India With the advancement in the requirement of data, the need for stringent quality of service guarantee is a demand of the current world, which brings the network programmers to design the network protocols that certify certain guaranteed performance in terms of service delivery. Here, focus is on the quality of service within the SDN network with its comparison and implementation using simulation. Types of quality of service are also discussed in this chapter with a focus on the ways of implementation of quality of service. The authors define a QoS management and orchestration architecture that allow them to manage the network in a modular manner. Performing the operation and results in such a network is shown as are the outputs for the same. Chapter 10 Analysis of Issues in SDN Security and Solutions Ankur Dumka, University of Petroleum and Energy Studies, India Hardwari Lal Mandoria, G. B. Pant University of Agriculture and Technology, India Anushree Sah, University of Petroleum and Energy Studies, India The chapter surveys the analysis of all the security aspects of software-defined network and determines the areas that are prone to security attacks in the given software- defined network architecture. If the fundamental network topology information is Downloaded: 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 poisoned, all the dependent network services will become immediately affected, causing catastrophic problems like host location hijacking attack, link fabrication attack, denial of service attack, man in the middle attack. These attacks affect the following features of SDN: availability, performance, integrity, and security. The flexibility in the programmability of control plane has both acted as a bane as well as a boon to SDN. Like the ARP poisoning in the legacy networks, there are se