SDN network host discovery method and system based on load balancing

Abstract

The present invention provides a method and system for discovering SDN network hosts based on load balancing. The discovery method includes: 1) the controller obtains the topology information of the switches in the entire network; Generate a switch-level broadcast tree, and configure and issue relevant flow tables to each switch according to the generated broadcast tree; 3) The switch learns the current workload status of the controller in real time and responds to the ARP request from the source host. When the load of the controller is light, the host discovery task is entirely undertaken by the controller; when the load of the controller is heavy, each switch is responsible for the host discovery task, so that the controller has relatively more capabilities to be responsible for other management and control tasks in the SDN network. The invention adopts two ways to deal with the ARP request from the source host, and the two ways are effectively complementary, so that the network can realize flexible and efficient host discovery according to the actual situation of the controller's work load.

Description

technical field [0001] The invention belongs to the technical field of network broadcasting, and in particular relates to a load balancing-based SDN network host discovery method and system. Background technique [0002] With the development of virtualization technology, big data and cloud computing, whether it is in IT, Industry 4.0, city management, or in the fields of economy, entertainment, education, etc., it is required that the large second-tier network of the data center can accommodate tens of millions or even Capability of hundreds of millions of hosts. Therefore, how to realize good management for a large number of hosts, especially how to quickly and effectively realize the search and discovery of the destination host, will be very difficult. Therefore, a flexible and efficient host discovery method and system will be very important at this time. [0003] However, many existing technologies (for example, G.Singh and A.J.Bernstein, "A Highly Asynchronous Minimum...

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Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method and system for discovering hosts in an SDN network based on load balancing, which is used to solve the problem of large network range, heavy controller load, and low host discovery efficiency in the prior art. and the problem of poor flexibility

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