The alarm occur time command sets the alarm anti-jitter time.
The undo alarm occur time command restores the default alarm anti-jitter time.
By default, the alarm anti-jitter time is 2500 ms.
| Parameter | Description | Value |
|---|---|---|
| time time | Specifies the alarm anti-jitter time. | The value ranges from 0 to 30000, in milliseconds. The step is 500, for example, the anti-jitter time can be 500, 1000, or 1500. |
Usage Scenario
When detecting a link fault or link recovery, CFM will send an alarm to the NMS. If CFM frequently detects a link fault or link recovery, alarm flapping occurs. To suppress alarm flapping, run the alarm occur time command to set the alarm anti-jitter time. This prevents the NMS or system from being affected by frequently reported alarms.
Precautions
IEEE 802.1ag has two versions: IEEE 802.1ag Draft 7 and IEEE Standard 802.1ag-2007. This command can be used only on the device running IEEE Standard 802.1ag-2007.
When detecting a fault, CFM compares the current fault generation time with the last time the fault was rectified. CFM sends an alarm to the NMS only when the time difference is not smaller than the alarm anti-jitter time.