SDN (Software Defined Network)
SDN (Software Defined Network) is defined as “making networking capabilities flexible using Centralized Software control”.
Motivation for SDN
- Deliver New Services faster
- CAPEX Saving
- Reduced Equipment Cost
- Reduced Equipment Vendor “look in”
- OPEX Saving
- Increased use of Automation
What is SDN?
SDN is defined as the process of controlling the networking capabilities and making it flexible using a Centralized software.
The main idea is behind the SDN was to
- Build a transport network that could be managed from a Centralized Node.
- Decouple Control Plane and User plane functionality in the network devices.
Some of the characteristics of SDN include a centralized and holistic view of the entire network in the control plane with the ability to control the data plane of the entire network.
On the other hand, the data plane has been greatly simplified. Its primary role is to forward user traffic. It makes the decision of how to forward the traffic based on information and instructions received from the centralized controller.
Benefits of SDN
- Total Cost of Ownership Reduction
- Capital Expense Savings
- Operation Expense Savings
- Network Agility
- Scalable and Flexible Network
- Reduced Time to Market
- Rapid Testing
- Automated Deployment
- Expended Vendor Ecosystem
- Hardware Independence
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