METHOD AND SYSTEM FOR MANAGING END-TO-END SERVICE PERFORMANCE BASED ON THRESHOLD, AND NETWORK MANAGER

Disclosed is a method for managing end-to-end service performance based on a threshold, comprising: setting a service threshold performance task, and a method for converting the service threshold performance task to a device threshold performance task; during operation of a system, converting the service threshold performance task to the device threshold performance task, and each device reporting threshold performance data thereof; calculating service threshold performance data according to the threshold performance data reported by each device; comparing all threshold performance data relevant to a service with a set threshold, and generating an alarm or alarm elimination according to a comparison result; delivering all the threshold performance data relevant to the service to each device for optimization. Further, disclosed are a system corresponding to the method, and a network manager. The present invention may solve problems in the prior art that it is difficult to determine a relationship between devic