SDN-based active-passive adaptive traffic measurement method and device
A flow measurement and active measurement technology, applied in the communication field, can solve the problems of high overhead, insufficient measurement result accuracy, and poor real-time measurement, and achieve the effect of balancing overhead, balancing accuracy, and reducing overhead.
Inactive Publication Date: 2018-01-30
STATE GRID CORP OF CHINA +2
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Problems solved by technology
At present, there are some traffic measurement methods proposed for SDN, such as OpenTM, FlowSense, etc., but there are still some problems: if a lot of detection traffic needs to be injected into the network, the overhead will be too large, the accuracy of the measurement results is insufficient, and the real-time performance of the measurement is not good. strong wait
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[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0016] First of all, it needs to be explained that the switch presented in this article is the switch that the flow forwarding path passes through in the power communication network, and the switch has the function of measuring the flow transmission flow.
[0017] The present invention optimizes the flow measurement technology in the power communication network based on...
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The invention discloses an SDN-based active-passive adaptive traffic measurement method and device to reduce the overhead of traffic measurement and to improve the accuracy and the timeliness of measurement. The method includes: S1, constructing a traffic matrix TM, initializing a matrix value to 0, and constructing an active flow list; S2: instructing a timer to poll a switch periodically for active traffic measurement for a new flow and the flows in the active flow list, updating the TM according to a value obtained by the active measurement and items corresponding to the active flow list, adjusting the value of the timer according to an adaptive algorithm in the process of active measurement, creating items corresponding to the new flow in the active flow list when the new flow is generated; and S3, using passive measurement at the end of the flow and updating the TM according to a received message sent by the switch and a corresponding items in the active flow list.
Description
technical field [0001] The invention relates to the communication field, in particular to an SDN-based active-passive combined adaptive flow measurement method and device. Background technique [0002] As the types of services carried in the power communication network continue to increase and the network scale continues to increase, the power communication network of the traditional network architecture is currently difficult to meet the development of informatization in the power industry. As a new network architecture, software-defined networking (SDN) separates the data layer and control layer of the network, simplifies network management by centralizing control and providing open control interfaces, and supports dynamic application control of network services. SDN can provide great advantages for the power communication network: it can realize the unified management and control of the power communication core network; network resource virtualization can maximize the use...
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IPC IPC(8): H04L12/26
Inventor 陈利跃金学奇汤亿则蒋正威阙凌燕杜奇伟章立宗张锋明宓群超马骁李勃梁野谷丰强李东昌马静雅田东博刘立国王姣罗海青赵瑞
Owner STATE GRID CORP OF CHINA