Advantages of SDN | disadvantages of SDN

This page covers advantages and disadvantages of SDN. It mentions SDN advantages or benefits and SDN disadvantages or drawbacks.

What is SDN?

The network which adapts itself to deal with unpredictable traffic requirements is known as Software Defined Network. Hence SDN deals with sudden peak demands of resources while maintaining appropriate resources most of the time.

SDN takes care of rapid network reconfiguration by incorporating business rules. Hence SDN is suitable for customers who change day to day network loads such as social networking sites e.g. twitter, facebook, yahoo etc. It is also ideal for search engines requiring large data centers such as google, yahoo etc. These search engines have geographically dispersed resources with varying work loads.


As shown, SDN uses APIs to configure as per varying need. Moreover, it has logically centralized control plane. It can be configured using open software. Refer SDN basics >>.

Benefits or advantages of SDN

Following are the benefits or advantages of SDN:
➨It enables centralized management of networking devices.
➨It helps in automation of networking devices.
➨It provides improvements to end users.
➨It offers flexibility, scalability and efficiency compare to traditional networking.
➨It is widely used by social networking websites (facebook, twitter, google plus etc.) and large database search engines (Google, Yahoo, Ask etc.)

Drawbacks or disadvantages of SDN

Following are the disadvantages of SDN:
➨It requires change in entire network infrastructure to implement SDN protocol and SDN controller. Hence it requires complete reconfiguration of the network. This increases cost due to reconfiguration.
➨Staff need to be trained.
➨New management tools need to be procured and everyone should be trained to use it.
➨Security is a big challenge in SDN.
➨Single point of failure.

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