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RUI MA AND FEI HU
© 2010 Taylor & Francis Group, LLC
OpenFlow is a flow-oriented technology, which defines a flow as a set
of header fields, counters, and associated actions. It runs on Nox or
some other platforms and provides people the software to control the
switches. FlowVisor is a special type of OpenFlow controller, which
is a middleware between OpenFlow switches and multiple OpenFlow
controllers. It decomposes the given network into virtual slices and
delegates the control of each slice to a different controller.
Both OpenFlow and FlowVisor have their limitations in terms of
network management, flexibility, isolation, and quality of service (QoS).
OpenFlow offers the OpenFlow switches and common instructions
but lacks standard management t ...