一种改进型FNG状态机的研究及实现

为了提高网络故障管理系统的效率，结合原有CFM技术，采用特殊故障屏蔽机制和告警优先级别机制相结合的综合性告警管理策略的FNG状态机，其设置了故障生命期限和故障再现期限值，增加了打印告警信息前的告警优先级别判断。在运行时，杜绝了用户界面的刷屏现象并能打印出三种级别的告警信息。测试结果表明，改进型FNG状态机可以突显高级别告警，单次显示重复性故障的告警，不显示短暂性故障的告警，从而减少了网络管理员定位故障的劳动量，提高了工作效率。

Implementation of Improved FNG State Machine

To improve the efficiency of network fault management system, an improved FNG state machine is introduced in original CFM technology. Special fault shielding mechanism with alarm mechanism of the priority level is added. The fault life duration and fault reproduction duration are set. The priority level is determined before printing alarm messages. In running, the user interface of the system could print alarm messages with 3 grades, and will not repeatedly print the same warning. Testing results show that the improved FNG state machine can reflect the high-level alarm and single display repetitive fault alarms. It won't show transient fault alarms, thereby reduces the labor mount of network administrator to locate fault, and improves work efficiency.