Network broadcasting method and system based on openflow technology

Abstract

The invention provides a network broadcast method and system based on the Openflow technology. The method comprises the steps: firstly generating a broadcast tree comprising a needed switcher through a controller based on the information of all switchers in an obtained network, the connection information among the switchers, a tree-building strategy, a tree-building algorithm and to-be-broadcast package information, configuring the flow meter information of each switcher based on a generated broadcast tree, and transmitting the flow meter information to the corresponding switcher; secondly carrying out the corresponding processing of all received broadcast packages based on the flow meter information transmitted by the controller through all switchers, so as to enable broadcast packages from a source terminal to be transmitted to the corresponding terminal, thereby achieving the network broadcast based on the Openflow technology. Compared with a conventional broadcast, the method reduces the range, reduces the network and switching node loads, reduces the occupation of network resources, can control the coverage of broadcast, and specifies the broadcast path and direction.

Description

technical field [0001] The present invention relates to the technical field of network broadcasting, in particular to a network broadcasting method and system based on Openflow technology. Background technique [0002] In the traditional data center server area network design, the scope of the Layer 2 network is usually limited below the network access layer to avoid a large-scale Layer 2 broadcast domain. With the development of virtualization technology, virtualization brings not only the improvement of server utilization to the data center, but also the change of network architecture. Specifically, virtual machine live migration, a companion technology of virtualization technology, has been widely used in data centers. However, virtual machine migration requires that the IP and MAC addresses of the virtual machine remain unchanged before and after the migration, which requires that the network before and after the virtual machine migration be in the same Layer 2 domain. ...

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Problems solved by technology

[0006] 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 establishing a network broadcast tree based on Openflow technology, which is used to solve the problems caused by the large broadcast range between network switching devices in the prior art and the global broadcast. Occupying links, low utilization, etc.

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