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A low-overhead collection method for sdn data flow flow-statistics

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: 2021-08-13
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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  • A low-overhead collection method for sdn data flow flow-statistics
  • A low-overhead collection method for sdn data flow flow-statistics

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Embodiment Construction

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

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

[0041] S1: Define the related parameters of SDN data flow flow-statistics collection.

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

[0043] S3: The controller delivers a data flow entry including the flow-statistics threshold value. 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 value, which is taken f...

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Abstract

A low-overhead collection method for SDN data flow flow-statistics, the steps of which are: S1: Define relevant parameters for SDN data flow flow-statistics collection; S2: Initialize each parameter in turn; S3: Controller issues data flow entries; when receiving When a PacketIn data packet is received, send the corresponding data flow entry to the relevant switch; add the data flow to the set at the same time; S4: The controller continues to monitor the flow-statistics message; S5: Determine whether the monitoring period is over; Go to step S6; if not finished, go to step S4; S6: Adjust the threshold value of the corresponding data flow; S7: The controller analyzes the received flow-statistics related messages; S8: Enter the monitoring of the next cycle of the data flow. The invention has the advantages of high accuracy, good real-time performance, small overhead and the like.

Description

technical field [0001] The invention mainly relates to the field of SDN (such as data center network, large-scale campus network, etc.), and particularly relates 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 ensure the accurate and efficient operation of these measurement applications. Therefore, efficient collection of data flow flow-statistics is of great significance for network measurement management. [0003] Usually, the collection of data flow flow-statistics mainly has two requirements: one is to ensure fine-grained and low-latency collection, that is, to present the changing status of network data flow as a...

Claims

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Application Information

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Patent Type & Authority Patents(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