How Does Software Defined Networking Work?
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Software Defined Networking (SDN) is a new approach to networking that decouples the control plane (the part of the network responsible for making decisions) from the data plane (the part of the network responsible for forwarding traffic). SDN uses specialized software to control the data plane, instead of traditional hardware-based routers and switches. This allows the network to be more flexible and programmable, allowing the network administrators to adjust or customize the network to meet specific needs or requirements.
The main components of an SDN architecture are a controller, an application layer, and the network elements. The controller is the brains of the operation, making decisions about how the data plane should be configured based on the application’s requirements. The application layer is the interface between the controller and the network elements. This layer is responsible for translating the controller’s instructions into commands for the network elements. The network elements, such as routers and switches, then carry out the instructions by forwarding traffic accordingly.
SDN technology allows for more efficient network management, faster response times, and improved scalability and security. It also simplifies the process of configuring, managing and troubleshooting networks, allowing network administrators to quickly deploy and provision new services.