ols and transforming and building their own forwarding tables along with providing many sublime router instances. These methods or ways or techs may seem helpful, they are limited in their scope. In order to make their values shoot up rocket sky-high, NFV needs to abstract the network resources alongside maintaining end-to-end connection Which simply means that virtual topology is decoupled from the physical topology The benefits which entails to the organisations using this method is that now developers can amend the layer 1 schemes Example is to enhance the network without affecting the already built up streams. OpenFlow Support As soon as message in form of segment or packet reaches the switches, the prefilled entries in the table flow are matched with the header of the message. It is the job of the controller to make a decision on what to do with the packet either make a separate entry in the table flow or else drop it. Downloaded 4/15/2022 9:44:49 AM Nova Southeastern University IP Address: 137.52.76.29 The Heart and Brain of SDN There are some basic requirements that must be fulfilled by an OpenFlow Controller which mainly are: Field Comparison Changing/Transforming the header structure for supporting basic OpenFlow methods. Finding out a new area of network using LLD mechanism. Choosing/Opting for a particular controller, a firm must clearly know the features of the controller and what all it can specifically do along with vendor's future requirements if they wish to acquire or build advanced models for that controller. The aim behind this is, many functionalities like Ipv6 is integrally present in 1.0 version of OpenFlo but not in the 3.0 version. Scalability Scalability refers to the process of expanding the system as the requirements starts to grow .The LAN as we all know it, is present in many layers of the OSI or TCP/ IP model(practically implemented) in which network layer's features and methods of routing are used to form a connection with many data link layer networks The thing is, you can't use th