What is SDN defined EPC and how it is different from normal EPC ?

Question

Now and days, everyone is talking about software defined network. Can someone please put some light on the area ?

Answer 1

Hi Harshita,
Basically the Software-defined networking (SDN) orchestration (or SDN orchestration) is the ability to program automated behaviors in a network to coordinate the required networking hardware and software elements to support applications and services.

SDN offers a centralized view of the network, giving an SDN Controller the ability to act as the “brains” of the network.

The whole system can be divided into 4 main parts:
1.Data
2.Application
3.Edge
4.CORE/METRO/ACCESS
E to E Orchestration can perform activities for above 4 stages, like monitor and automated behaviors in a network to coordinate H.W and S.W elments in network to perform the given services.

see below pic for more clarification..

Answer 2

In my brief understanding, SDN only focus on how the packet flow in the network that means centralized in SDN controller.

So, EPC with SDN is using SDN Controller & whitebox switch while ordinary EPC use traditional Router/Switch.