SDN, or Software-Defined Networking, simplifies the management and operation of networks by decoupling the network control plane from the forwarding plane. In simpler terms, it allows administrators to manage network traffic from a centralized software application rather than configuring each network device individually.
SDN is defined as an approach to networking that separates the control of network traffic from the forwarding of data packets. This separation enables administrators to dynamically manage network traffic flow and quickly respond to changing network requirements through centralized control.
The main function of SDN is to centralize network management and programmatically configure network behavior through software applications. By separating the control plane from the data plane, SDN enhances network agility, scalability, and efficiency, allowing for easier implementation of network policies and quicker adaptation to network changes.
In layman’s terms, SDN can be described as a way to make networks smarter and more flexible by controlling them through software rather than hardware. It simplifies network management, improves security, and makes it easier to adapt to new technologies and traffic patterns.
An example of SDN networking is in data centers where virtual machines and applications require dynamic network configurations. SDN allows administrators to manage traffic flows and prioritize bandwidth based on application needs, ensuring efficient data transfer and optimal performance without manual intervention on each network device.