Software Defined Networking (SDN) is a network architecture that decouples the network control plane (decision-making) from the data plane (packet forwarding). This separation enables centralized network management and programmability through a software-based SDN controller.
How SDN Works
Centralized Controller: The SDN controller acts as the network's brain, maintaining a global network view and providing instructions to network devices.
APIs: Northbound APIs connect the controller to network applications, while southbound APIs (like OpenFlow) manage communication with the data plane devices.
Data Plane: The data plane consists of switches and routers that physically forward data packets based on instructions received from the controller.
Benefits of SDN
Agility: Rapidly reconfigure and adapt the network to meet changing needs.
Simplified Management: Centralized control reduces complexity and minimizes errors.
Security: Improved visibility and control enable better security policy enforcement.
Programmability: Automate network tasks and customize network behavior.
Innovation: Facilitates development of new network applications and services.
Use Cases for SDN
Data Centers: Enables dynamic resource provisioning, optimized virtual machine traffic, and enhanced security.
Cloud Networking: Provides the flexibility and automation required for cloud workloads.
Enterprise Networks: Simplifies network management and supports evolving business initiatives.
Service Provider Networks: Automates service provisioning, accelerates new service introduction, and optimizes network resources.
SDN and Netrinos
Netrinos builds upon SDN principles to deliver flexible and programmable network operating systems. Netrinos SDN solutions provide solutions for data centers, cloud providers, and carriers, offering features like: