Method and device for realizing flow meter information real-time synchronization of openflow switches

Abstract

The invention relates to a method and a device for realizing the flow meter information real-time synchronization of openflow switches, which are applied in an openflow network composed of a controller, a master openflow switch and a standby openflow switch. The controller is used for sending a first request message to the master openflow switch every once in a while, wherein the first request message is used for inquiring the flow meter information of the master openflow switch. The master openflow switch returns a corresponding reply message to the controller upon receiving the first request message. After that, the controller extracts the flow meter information of the master openflow switch that is contained in the reply message, and then issues a second request massage to the standby openflow switch, wherein the second request massage is obtained through the restructuring transformation of the flow meter information. According to the technical scheme of the invention, the flow meter information can be mutually synchronized among multiple openflow switches. Meanwhile, the fully redundant backup of switches and flow meters in certain applications can be realized. The disturbance caused by the loss of the flow meter information to the IT management staff can be relieved.

Description

technical field [0001] The invention relates to the technical field of openflow networks, in particular to a method and device for realizing real-time synchronization of flow tables of openflow switches. Background technique [0002] At present, the rapid development of the Internet, the huge application scale and the importance of its status are far beyond the imagination of the designers. However, the current Internet mainly has the following disadvantages: there is no unified management, network forwarding mechanism and strategy within a specific scope Single, it is difficult for operators to optimize their own networks to the maximum extent, and the functions and protocols used by traditional switches for forwarding are numerous and complex, difficult to configure, and the system is prone to errors. In order to deal with the above disadvantages, people have proposed an Openflow switch, which separates message forwarding and forwarding strategies on a traditional switch, ...

AI Technical Summary

Problems solved by technology

[0003] At present, in the Openflow switch system, whether it is the controller itself or the control path of the controller, it may be unreliable due to various reasons, such as control network congestion, network unavailability or controller crashes, etc. , at this time, if a controller is disconnected from the network, and the function of this controller cannot be replaced by other controllers, it will inevitably lead to the failure of the entire switch system to operate normally.

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