Synchronization of OpenFlow controller devices via OpenFlow switching devices
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United States of America Patent
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Sep 15, 2015
Grant Date -
Sep 18, 2014
app pub date -
Mar 14, 2013
filing date -
Mar 14, 2013
priority date (Note) -
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Abstract
An OpenFlow switching device of an OpenFlow network sends a message including a flow rule received from a first OpenFlow controller device currently active within the OpenFlow network to a second OpenFlow controller device also currently active within the OpenFlow network. As such, the second OpenFlow controller device stays in synchronization with the first OpenFlow controller device. Upon a third OpenFlow controller device becoming newly active within the OpenFlow network, the OpenFlow switching device sends a message including flow rules of the switching device's flow table to the third OpenFlow controller device. As such, the third OpenFlow controller device becomes immediately up-to-date with respect to this flow table.
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