Control Plane Fault Diagnosis System Based on Differential Detection and Its Implementation Method

Abstract

The invention discloses a differential detection control plane fault diagnosis system and an implementation method thereof. The system comprises a data acquisition module, an online monitoring module,an offline fault diagnosis module and a network event replay engine. The implementation method comprises steps of acquiring code calling and state change information in the controller through the online monitoring module and the data acquisition module, and constructing a context-aware system behavior model; when the current system is not abnormal, extracting a system behavior model and storing the system behavior model in a reference library as a reference model; when the system finds out abnormity, finding out a system behavior model with a fault and a corresponding reference model according to the symptom of the fault; Difference comparison is carried out on the nodes from top to bottom, and abnormal nodes are found out; And then, carrying out static analysis at the abnormal nodes, finding out the source of the fault at the code level, confirming the source through a network event replay engine in a simulation environment, and submitting the source to an administrator as a fault diagnosis report. The fault source can be positioned, and the applicability is high.

Description

technical field [0001] The invention belongs to the field of computer Internet, and specifically relates to a differential detection-based control plane fault diagnosis system in a software-defined network and an implementation method thereof. Background technique [0002] Software-defined network (SDN) is a new type of network architecture. Compared with the traditional seven-layer network architecture, the core design of SDN is to separate the control plane from the forwarding plane, and divide the network into application layer, control layer and forwarding layer. All configuration and management of the network are handled centrally by the controller, while devices at the forwarding layer are only responsible for efficiently forwarding traffic. The centralized control of the network in SDN greatly simplifies the work of network administrators, and the flexible programmability provides a broad space for upper-layer application development. [0003] The SDN controller is ...

AI Technical Summary

Problems solved by technology

Although the relevant fault diagnosis technology can effectively point out some existing problems, it cannot locate the root cause of the fault, point out the specific link of the fault, and the scenarios used and the problems targeted are also lack of versatility

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