Principles
This section describes how performance management is implemented.
Interface traffic statistics, for example, number of packets sent and received on an Ethernet interface
Protocol packet statistics, for example, number of a specific type of protocol packets
System running parameters, for example, CPU usage statistics
The statistics collection function involves various statistics collection tasks, and each task can be bound to multiple statistics collection instances. After you create a statistics collection task, the system periodically collects data in the instances bound to the task and calculates the statistical counters in each statistics collection cycle. The statistics are saved to statistics files periodically.
Active mode: The system periodically generates statistics files and automatically uploads the files to the PM server.
Passive mode: The system periodically generates statistics files. When the system receives a file uploading instruction from the network management system (NMS) or a file uploading command is executed, the system uploads the statistics files to the PM server.
NOTE: Using FTP to upload performance statistics files is insecure. Therefore, using SFTP is recommended.
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