Alarm Reason Analysis
The System alarm reason analysis function effectively sorts the alarm information for you to locate the root cause quickly. You can use the following methods:
- Root alarms: Generally, you do not need to pay much attention to and process a large number of alarms on the network; otherwise, your time is wasted and you may fail to discover the critical alarm information. The System can analyze and sort the alarms by category automatically. A category is a root alarm and contains superficial alarms. The System greatly reduces the number of alarms to be paid attention to, as shown in the following figure:
- Alarm relation analysis: Many alarms are logically related with each other. The System pre-defines relation analysis rules for various alarms based on years of researches on network faults. According to these rules, The System analyzes the logical reasons of alarms, excludes superficial alarms, locates and displays root alarms, as shown in the following figure:
- Alarm reason analysis based on topology data: The System can locate the network alarms that cause the alarms of a specific device according to the existing network topology. Meanwhile, The System compresses superficial alarms and displays them together with the root alarms on the Root Alarms page. For example, if the link to the upstream device goes down, an alarm appears on the downstream device. The System displays the alarm that the upstream link is down as the root alarm, whereas displays the alarm appearing on the downstream device as a superficial alarm, as shown in the following figure:
Parameters
- Downstream device: The device that is further from the reference object (a core device or the access device), compared with the other device that is located on the same physical path.
- Upstream device: The device that is nearer to the reference object (a core device or the access device), compared with the other device that is located on the same physical path.
- Core device: The baseline reference object for defining the upstream and downstream devices. A switching device at the core layer is usually specified as the core device.
- Access device: The network device to which The System is connected, or a specific switching device on a single access path.
