topic SDN Network in Controllers

SDN Network

b-yassamine — Mon, 25 Mar 2019 17:54:20 GMT

Hi everybody ,

In the SDN architecture we are talking about a controller that communicate with applications using the northbound API and with the infrastructure layer with southbound API

So my question is: what is the difference between southbound API , southbound interfaces or southbound protocols, which is more correct

thanks guys

Re: SDN Network

Hamid Chaiforoush — Mon, 19 Jun 2017 03:42:28 GMT

“Southbound API” is the interface between the control and data planes. So they should be Vendor-specific interfaces, the most commonly Southbound API is Openflow.

“Northbound API” is the interface between the control and application planes. In fact, the Northbound interface enables applications to access control plane functions and services without needing to know the details of the underlying network switches. Northbound interface is more typically viewed as a software API rather than a protocol. At last, unlike Southbound API there is no widely accepted standard, as I know.

Re: SDN Network

b-yassamine — Mon, 19 Jun 2017 08:24:04 GMT

hi hamid ,

thanks for you answer

so in a SDN architecture : what is the difference between API and protocol and interface (southbound)

thanks again

Re: SDN Network

Hamid Chaiforoush — Tue, 20 Jun 2017 04:01:35 GMT

I can give you short answers, but don’t believe that help you if you have a long term!

May I suggest you to quickly choose and review a SDN introduction books because there are wide variety of new terminologies you need to grab. If you ask me I recommend you “Fundamental of Modern Networking” by William Stallings.