SDN（Software Defined Networks）是一种创新的网络架构，它将网络设备的控制平面与数据平面分离，通过集中式的控制器实现对网络流量的灵活控制和管理。这种技术能够简化网络运营、加速服务部署并增强安全性，是现代数据中心和云环境中的关键技术之一。
Software Defined Networks (SDN) is a network architecture that separates the control plane from the data plane in networking devices, enabling more dynamic, intelligent, and manageable networks. SDN allows for centralized management and programmability of network resources through open APIs, which can improve efficiency and flexibility compared to traditional network architectures.
In an SDN environment, the controller acts as the brain of the network by managing traffic flows according to applications needs. This approach simplifies tasks such as configuring firewalls or load balancers because administrators can make changes centrally rather than on individual devices. Additionally, SDN supports rapid deployment and scalability for cloud services and virtualization technologies.
Overall, SDN represents a significant shift in how networks are designed and managed, offering numerous benefits including increased agility, reduced costs, enhanced security features, and improved user experience.
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