The Promise of SDN: Drivers, Use Cases & Benefit
This is the second in a series of thirteen blogs that are designed to help IT organizations on their path to Software Defined Networking (SDN) adoption. This Promise of SDN blog will focus on the drivers of SDN as well as the primary use cases and benefits.
It is important to realize that few, if any, IT organizations want a SDN. What IT organizations want is to solve current problems and add value. If SDN can enable them to do that better than alternative approaches to networking, then it will be widely adopted.
One of the key strategic benefits that SDN provides is that it enables dynamic access to state information such as the status of queues. As a result, applications can specify the services that they want from the network. For example, an application that is delay sensitive can request the end-to-end path with the least amount of delay.
Some of the key benefits of SDN in the data center are that it enables network virtualization as well as the automation of provisioning and management and the implementation of policies such as QoS. SDN also enables organizations to significantly increase the utilization of their WAN links and hence reduce cost. In the campus, SDN enables the implementation of policies such as QoS and it also enables the automation of key security functionality.
In my next blog, I will expand on the promise of SDN and discuss OpenFlow and the role of both the Open Networking Foundation (ONF) and other key standards groups.
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