Alarm
The Alarm and Event Groups allow you to record important events or immediately respond to critical network problems. The Alarm and Event Control Tables are used together to define specific criteria that will generate response events. Remember that the Web Agent can only display control entries. To define a specific entry, you must use
Item | Description |
Alarm Index | An index that uniquely identifies an entry in the alarm table. |
| Each such entry defines a diagnostic sample at a particular |
| interval for an object on the device. |
Interval | Interval in seconds over which the data is sampled and |
| compared with the rising and falling thresholds. |
Variable | Object identifier of the particular variable to be sampled. |
Sample Type | Method of sampling the selected variable and calculating the |
| value to be compared against the thresholds. If the value of this |
| object is absoluteValue(1), the value of the selected variable |
| will be compared directly with the thresholds at the end of the |
| sampling interval. If the value of this object is deltaValue(2), the |
| value of the selected variable at the last sample will be |
| subtracted from the current value, and the difference compared |
| with the thresholds. |
Value | Value of the statistic during the last sampling period. |
Startup Alarm | If the first sample (after this entry becomes valid) is greater than |
| or equal to the risingThreshold AND alarmStartupAlarm is |
| equal to risingAlarm(1) or risingOrFallingAlarm(3), then a single |
| rising alarm will be generated. If the first sample (after this entry |
| becomes valid) is less than or equal to the fallingThreshold |
| AND alarmStartupAlarm is equal to fallingAlarm(2) or |
| risingOrFallingAlarm(3), then a single falling alarm will be |
| generated. |
Rising Threshold | When the current sampled value is greater than or equal to this |
| threshold, and the value at the last sampling interval was less |
| than this threshold, a single event will be generated. A single |
| event will also be generated if the first sample after this entry |
| becomes valid is greater than or equal to this threshold and the |
| associated alarmStartupAlarm is equal to risingAlarm(1) or |
| risingOrFallingAlarm(3). After a rising event is generated, |
| another such event will not be generated until the sampled |
| value falls below this threshold and reaches the |
| alarmFallingThreshold. |
9033060 |
