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SDN/OPENFLOW: CONCEPTS AND APPLICATIONS
© 2010 Taylor & Francis Group, LLC
Generally, it is difficult to experiment with new types of networks.
Because new types of networks often use different addressing schemes
and include other nonstandard aspects, it is difficult to incorporate
these changes into existing networks. OpenFlow allows routers,
switches, and access points from many different companies to use the
separation of the control and data planes. e devices forward data
packets that were received based on defined rules from the controller.
If the devices do not have a rule for the data packet that has arrived,
the devices forward the packet to the controller for review. e con-
troller determines what to do with the packet and, if necessar