The alarm finish time command sets the clear alarm anti-jitter time.
The undo alarm finish time command restores the default clear alarm anti-jitter time.
By default, the clear alarm anti-jitter time is 10000 ms.
| Parameter | Description | Value |
|---|---|---|
| time time | Specifies the clear 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 finish time command to set the clear 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 link recovery, CFM compares the current link recovery time with the last time the fault was generated. CFM sends an alarm to the NMS only when the time difference is not smaller than the clear alarm anti-jitter time.