System and method for realizing automatic network failure analysis based on SDN technology

Abstract

The invention relates to a system and a method for realizing automatic network failure analysis based on SDN technology. The system comprises one SDN controller and multiple SDN switches. The SDN controller realizes real-time detection and cycle detection of each link in network topology, and monitors states of the SDN switches in real time and maintains the global network topology. The SDN controller comprises an OpenFlow module, an OpenFlow extension module, an event module, a topology module and a detection module. The detection module comprises a real-time detection module and a cycle detection module. With the system and the method, the whole network can be monitored, and network failure analysis is realized.

Description

technical field [0001] The invention specifically relates to a system and method for automatic network fault analysis, belonging to the field of network fault analysis. Background technique [0002] With the rapid development of business fields such as social networks, mobile Internet, and the Internet of Things, Big Data is increasingly becoming the current focus, and its massive data processing also puts forward higher requirements for the network. Big data applications rely on a pre-defined computing model, run under a centralized management structure, and there are a large number of batch data transfers and related aggregation / division operations. Aggregation and division of data usually occurs between a server and a server group with many servers, which is also the most typical network traffic pattern in big data applications. Every aggregation in the process of big data processing will lead to massive data exchange between a large number of servers, which requires ext...

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Problems solved by technology

[0007] The shortcoming of prior art: a kind of method and device of SDN network failure analysis, first, under the path of known business, it is to generate a detector for the instance created on each SDN switch on the path, then will construct The detection message starts from the test starting point and is transmitted to the service flow test end point according to the service flow path to perform fault detection on the service flow path, resulting in a single scenario application

Secondly, his detection results are only single, only "reachable", "unreachable" or "unknown", which can only let the network administrator know the link status, but not the link status (delay, packet loss, bandwidth, etc.), Unable to schedule the link

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