Method and system for implementation of redundant backup of controllers in Openflow switch system

Abstract

The invention provides a method and a system for implementation of redundant backup of controllers in an Openflow switch system. The method includes: deploying a plurality of controllers communicated with a switch, wherein the controllers can be a plurality of peer devices, a combination of a master device and a plurality of slave devices or a combination of a plurality of peer devices and a plurality of slave devices; and when the controllers are deployed to the combination of the master device and the slave devices, monitoring whether network reachability of the current master device is normal or not in real time, maintaining the current configuration if yes, while selecting one from the slave devices as the master device of the current system if not. By the aid of the method and the system, the network reachability of the controllers in the switch system is monitored in real time, and one of the slave devices is selected as the master device when the master device in the system is in network disconnection, so that the master device capable of working normally in the system exists at any time, and further, system stability is improved.

Description

technical field [0001] The invention relates to the technology in the field of Ethernet, in particular to a method and a system for realizing redundant backup of controllers in an Openflow switch system. 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-mentioned disadvantages, people have proposed the Openflow switch, which separates the packet forwarding and forwarding strategy on the tradit...

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 crash, etc. Problem, 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 malfunction of the entire switch system

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