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SDN data flow flow-statistics low-overhead acquisition method

A collection method and data flow technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as poor flexibility, unguaranteed measurement accuracy, and large measurement load, so as to optimize the monitoring mechanism and improve monitoring efficiency , the effect of low deployment cost

Active Publication Date: 2018-10-12
湖南省星岳天璇科技有限公司
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Problems solved by technology

[0012] 1) Depending on the sampling data package, the measurement accuracy cannot be guaranteed, and it is difficult to meet the needs of various measurement applications;
[0013] 2) Relying on active detection messages cannot adapt to the increasing number of services carried by the SDN network, resulting in a large measurement load;
[0014] 3) Only using the trigger method cannot guarantee the minimum granularity of monitoring, and the flexibility is poor

Method used

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  • SDN data flow flow-statistics low-overhead acquisition method
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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Such as figure 1 As shown, the SDN data flow flow-statistics low overhead collection method of the present invention, its steps are:

[0041] S1: Define the relevant parameters for SDN data flow flow-statistics collection.

[0042] S2: According to the measurement target, initialize ActiveFlow_Table[], ActiveFlowStat_Table[], T, N in sequence trigger , α, β, thresholds[] parameters. Assume that two consecutive Periodic checkpoints are T when data stream flow-statistics is collected 1 and T 2 (T 2 >T 1 ).

[0043] S3: The controller delivers data flow entries containing the flow-statistics threshold. When the controller receives the PacketIn data packet, it will send the corresponding data flow entry to the relevant switch. The data flow entry contains the preset flow-statistics threshold, which is obtained from the firs...

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Abstract

An SDN data flow flow-statistics low-overhead acquisition method comprises the steps of: S1: defining relevant parameters collected by the SDN data flow flow-statistics; S2: initializing each parameter in turn; S3: sending a data flow entry by the controller, sending the corresponding data stream entry to the relevant switch when receiving the PacketIn data packet, and adding the data stream to the set at the same time; S4: continuously monitoring the flow-statistics message by the controller; S5: determining whether the monitoring period ends; if so, skipping to the step S6; otherwise, skipping to the step S4; S6: adjusting the threshold value of the corresponding data stream; S7: analyzing related message of the received flow-statistics by the controller; and S8: entering the monitoringof the next periodicity of the data stream. The invention has the advantages such as high accuracy, good real-time performance and low overhead.

Description

technical field [0001] The present invention mainly relates to the field of SDN (such as data center network, large-scale park network, etc.), and in particular refers to a low-overhead collection method of SDN data flow flow-statistics. Background technique [0002] The collection of data flow flow-statistics is an important research content of network measurement, which can provide the most basic measurement data for many network measurement applications, such as link utilization calculation, traffic engineering, congestion management, network topology planning, etc. To a certain extent, the accurate and effective operation of these measurement applications is guaranteed. Therefore, efficient collection of data flow flow-statistics is of great significance for network measurement management. [0003] Usually, the collection of data stream flow-statistics mainly has two requirements: one is to ensure the fine-grained and low-latency collection, that is, to present the chan...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26
CPCH04L43/024H04L43/028H04L43/16
Inventor 陈琳王斌锋黄杰
Owner 湖南省星岳天璇科技有限公司
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