It is prudent to learn that software defining networking is a revolutionary method that seeks to improve the functioning of a system and enhance its effectiveness. It is imperative to note that in SDN, there is a central control layer which seeks to control the flow of data and the related use of bandwidth and other parameters. Software defining networking is useful in a network in that is perform as a brain of that particular network which allows the person managing the network to understand various operations in the best way possible. It is imperative to note that SDN can regulate the traffic efficiently and dictate to the underlying systems like the routers, switches and other network gear on how the network traffic should be managed. It is essential to understand that the use of software defining networking allows the engineers working on it to come up with solutions to altering a business needs and develop the flow of traffic without searching or manipulating the switches.
Note that software defining networking is the brain of the system and acts as a bridge between two levels. Note that the level above the controller is the application layer and all the information travelling to that level is termed as northbound. On the other hand, the information which flows below the application layer is referred to as infrastructure and all the info which go to this level is said to be southbound. The set procedures and devices which are used to design a software application is known as application programming software (API). It is imperative to know that API helps to manifest the software in terms of its separate elements such as inputs, outputs, and operations. The northbound APIs dictate to the applications on top while the southbound APIs communicate with the routers and switches below in SDN.
It is imperative to note that SDN come with various benefits such as cutting down on capital and operational costs in the best way possible. Optimization methods, automation and useful separations helps to reduce further the costs. Also, higher reliability in networking functioning is obtained and programmable interfaces and switches implies that scaling up or down of network operations is easy.
One can now change the traffic loads in the quick, dynamic and cost-effective way. Therefore, SDN aims at acting as a bridge between the network intelligence part and the physical hardware part without having to disrupt any function or efficiency. The use of SDN ensures that there is a reduction in manual monitoring, time and cost which is associated with the reconfiguration. It is essential to note that SDN act as hope when there are loopholes in networking such as vendor dependence, complexity and inability to scale up or scale down fast which lead to slow growth.