The traditional approach to networks focuses more on hardware modules for shaping, managing, and guiding network traffic. But as technology continues to evolve and demands on the network increase, the limitations of hardware-centric approaches have become apparent. Software-defined network security modules have made a foray, which is a new approach to networking. This provides increased flexibility, centralized control, and the ability to automate network configuration. Before we proceed, there is a need to understand the future potential of software-defined network solutions and what it has in store.
The definition of software-defined networking
SDN is a network architecture approach that segregates the control plane from the data plane. An SDN network engulfs centralized control of the network through software. This sets the tone for automated and dynamic configuration of normal behavior, allowing a greater level of flexibility, programmability, and scalability in comparison to traditional hardware-centric modules.
The difference between SDN and traditional network approaches
In the traditional world of networking, the management and control of the network are handled by the hardware itself. The responsibility lies with the hardware for making decisions on how to direct traffic, and the network administrator configures and manages those decisions. This is where software-defined network security is different.
SDN is different
Coming to the SDN network, it is a tinge different. The management and control of the network shift from the hardware to a centralized software controller. The hardware is more like game pieces, whereas the software is the rulebook. The network administrator is able to script their own rules and make changes on the move, so there is no need to touch the hardware physically. SDN has the power and flexibility to bring about major changes in the world of networking.
Real-world SDN implementations and user cases
Now is the right time to bring the SDN network out of the theoretical world. The thought may come up as to why the magic word SDN is being used. Below are some real-world examples of SDN that you may come across in action.
- Data centres: This is useful in data centres where managing a large number of servers and switches may be terrible. With SDN, network administrators can quickly and easily make changes to the network. This might involve adding or removing servers without having to touch the hardware directly.. It is going to save time and reduce downtime, which turns out to be a beneficial move in the data-centric world.
- Cloud computing: In the domain of cloud computing, software-defined networking security solutions are used to dynamically allocate resources like bandwidth and processing power. This is based on the needs of the applications that are operational in the cloud. It is going to lead to an efficient use of resources that will reduce costs.
- Campus networks: For large organizations with multiple buildings and data centres, SDN is a lifesaver. It has the ability to centrally control and manage the network. Administrators ensure that all the same branches tend to have the same policies and regulations. This is true even if they are situated on different continents.
- Service providers: Service providers may use SDN to create new services and provide customized experiences for their customers. An example is that a service provider could offer a network that prioritizes gaming traffic for gamers.
These are some of the few examples of how SDN is used in today’s times, and there are many more out there too. The point of consideration is that SDN is not a futuristic topic for solving real-world problems; it is a technology that is being used now. Once the world continues to evolve and become connected, the general anticipation is that there are going to be more cases of software-defined network solutions in the future.
By now, it is evident that SDN is not a buzzword. It is a real form of technology that is bound to make a considerable impact in the world of networking. If you are in the market for a scalable, flexible, and automated network, then SDN may turn out to be the perfect solution that you are looking for.
Network function virtualization
NFV is all about taking the hardware components of a network and virtualizing them so that they can be operational on standard servers. Not only does it lead to greater flexibility or savings, but it can also lead to considerable savings on the cost front. The focus of NFV is on virtualizing the hardware components of network software. Software-defined networking solutions are focused more on segregating the control and management of the network from the hardware.
Edge computing
It is all about bringing the computer closer to the edge of the network, where data generation occurs. This reduces latency and leads to faster processing times. Edge computing is focused on where computing is happening, and SDN centres around how the network is being managed and controlled.
Difference among the technologies
Now the question is how these technologies compare to SDN. All of them tend to bring different benefits and end up providing a comprehensive network solution. Edge computing and NVF can support SDN by giving it the processing power and capacity it needs to function well. SDN is able to reciprocate in the same manner by providing the control and management capabilities that they need to be effective.
It can be compared, just like a family tree. Every member of the tree has their own positives and brings their personality to the table. When they work together, it leads to a harmonious family.
So it is clear that SDN does not have any competition with edge computing and NFV; rather, they are known to complement each other in providing a comprehensive network solution.