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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Jul 30, 2019
Grant Date -
Nov 30, 2017
app pub date -
Aug 21, 2017
filing date -
Oct 26, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Embodiments disclose a method for acquiring, by a switch deployed in a software defined network (SDN), an exact flow entry, where the SDN network includes an SDN controller and multiple SDN switches, the SDN controller being configured to communicate with each SDN switch in an inband communication manner. The method includes establishing, by a first SDN switch, a reliable connection to the SDN controller, and sending a first control message based on a packet corresponding to a protocol for the reliable connection. Path information of the first SDN switch is added to the control message. Each SDN switch that receives the first control message adds path information of each SDN switch to the first control message, so that the SDN controller is provided with an entire path, so as to deliver a flow table to the first SDN switch.
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