What is SDN (Software-defined networking) & How SDN works ?
What is SDN?
SDNs is a centralized approach wherein, there is a physical separation of the management plane, control plane, and data forwarding plane of network. The control plane controls several devices.
- Management Plane :
- Control Plane :
- Forwarding Plane :
Why Do We Need SDN?
- SDN saves huge costs, compared to traditional Networks in terms of Hardware upgrades.
- SDN enables network programmability.
- Network Components are centrally managed unlike the localized management of traditional Networks.
- SDN can also work by being Vendor Neutral instead of relying on vendor-specific devices and protocols.