An SDN-based network traffic monitoring method

Abstract

The invention discloses a network traffic monitoring method based on SDN, which comprises the following steps: monitoring network construction: connecting a monitoring device and network equipment and performing data configuration; network traffic acquisition and storage: network equipment automatically reports once to the network after a period of time Traffic data, the message middleware processes these network traffic data and stores them; traffic data encapsulation and display: the acquired network traffic data is encapsulated into the format required by the front-end interface, and pushed to the front-end interface at the same time. The invention can not only monitor network traffic in real time, but also facilitate analysis of historical traffic data; fully utilize the advantages of the influxdb time series database, set a certain life cycle for database data, effectively reduce useless data, and use continuous query to automatically generate historical traffic data at the same time, The SDN controller does not need to do extra work, which reduces the workload of the SDN controller.

Description

technical field [0001] The invention relates to an SDN-based network traffic monitoring method, which belongs to the technical field of network communication. Background technique [0002] With the increasing abundance of network applications, traffic data is also diversified. In order to monitor these diversified traffic data, and also to effectively track historical traffic data. [0003] SDN (Software Defined Network) is a software-defined network, which is a network design concept. The network hardware can be managed by centralized software, which separates the control layer from the forwarding layer and realizes network programmability. The original SDN network traffic monitoring generally uses the SDN controller maintenance thread to monitor real-time traffic data by frequently querying network devices. This method has brought great pressure to both the SDN controller and network devices. Influenced by the network environment, the accuracy of data cannot be guarantee...

AI Technical Summary

Problems solved by technology

The existing SDN network traffic monitoring scheme has the following disadvantages: 1) maintain threads through the SDN controller, query traffic data on each device through PULL, and store the database after processing, which affects the working efficiency of the SDN controller; 2) Frequent reading of traffic data on the network device affects the working efficiency of the device; 3) Once the network is abnormal, the query command of the SDN controller may arrive at the network device with a delay, which will cause the queried data to be inaccurate; 4) very Pay less attention to historical traffic data, and seldom screen and store historical traffic, resulting in too large a volume of data that the ODL controller needs to process when analyzing historical traffic, and the processing speed is slow; SDN controllers all create stress

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