Software Defined Networking and Open Flow Protocols Overview

Software Defined Networking serves as an innovative approach to use open protocols in the form of Open Flow. This allows individuals to apply globally aware type of software control across the edges of computer network to allow accessing of routers and network switches, which typically use proprietary and closed firmware. However, there exist few differences in between the two terminologies as SDN and Open Flow, about which IT professors of best engineering colleges in Indiahave highlighted in this blog post.

Open Flow Switch is responsible for separating the functions performed by SDN and Open Flow. Here, data path portion will preside over the switch, while various high-level of routing decisions will move towards separate controller, especially a standard type of server. Open Flow Switch and Controller device, as explained by IT faculties of best engineering colleges in India will communicate with the help of Open Flow protocol responsible for defining messages, like send packet out, packet received, get graphs or statistics and modify forward table.

IT professors of best engineering colleges in Indiahave further explained that data path of Open Flow Switch that presents a clear flow of table abstraction. Here, each entry of the flow table will contain proper set of various packet fields to obtain perfect match and action in the form of modify-field or drop, sending out port and similar others.

Whenever an Open Flow Switch receives any packet that does not match with any of the flow entries, it sends that packet into controller and allows it to make decision on ways, by which one can handle the packet. In this manner, one can drop packet or add flow entry to direct the switch on various ways of forwarding similar types of packets in future.