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.
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