SDN data center network congestion control method based on rerouting
A data center network and congestion control technology, applied in the field of communication, can solve problems such as sudden large flows, network performance degradation, and delay sensitivity, so as to save resources, reduce the probability of congestion, and reduce the delay of small flows Effect
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[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0050] refer to figure 1 , the specific implementation steps of the present invention are further described in detail.
[0051] Step 1. Perceive the topology of the data center network.
[0052] Build a Fat-tree data center network topology.
[0053] Use the software-defined network SDN controller to send the link layer discovery protocol LLDP to perceive the network topology of the data center.
[0054] Step 2, get statistics.
[0055] The SDN controller of the software-defined network periodically sends a flow statistics request message to each switch in the data center network, and the cycle interval is T, and T=5s in the simulation of the present invention.
[0056] After each switch in the data center network receives the flow statistics request message sent by the controller, it replies with a flow statistics reply message to the controller.
[005...
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