Method for acquiring, by SDN switch, exact flow entry, and SDN switch, controller, and system
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United States of America Patent
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Aug 22, 2017
Grant Date -
Aug 18, 2016
app pub date -
Apr 25, 2016
filing date -
Oct 26, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Embodiments of the present invention disclose a method for acquiring, by an SDN switch, an exact flow entry, applied to an SDN network, where the SDN network includes an SDN controller and multiple SDN switches, the SDN controller communicates with each SDN switch in an inband communication manner, and the method includes: first establishing, by a first SDN switch, a reliable connection to the SDN controller; then, sending a first control message based on a packet corresponding to a protocol for the reliable connection; adding path information of the first SDN switch to the control message; and subsequently, also adding, by each SDN switch that receives the first control message, path information of each SDN switch to the first control message, so that finally, the SDN controller knows an entire path, so as to deliver a flow table to the first SDN switch.
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