How to use Forward Alarms as SNMP Traps rule (4288357)

After enabling the Forward Alarms as SNMP Traps rule, we noticed that the trap was actually sent twice, once when the alarm was cleared and once when it was raised again.

Is there a way to suppress sending the SNMP Trap for a cleared alarm?

How to filter alarms that are forwarded as SNMP Traps?

The Forward Alarms as SNMP Traps doesn't filter any AlarmSystemEvents. Foglight generates an event when an Alarm fires but also when it's cleared or acknowledged.

Configure the Forward Alarms as SNMP Trap rule action parameters

1. From the Web Interface go to  Administration > Rules & Notifications > Rule Management
2. Edit the rule Forward Alarms as SNMP Traps
3. Select the Fire tab
4. Select Email Notification & Recovery Actions
5. Select Send SNMP Trap Action
6. Update the Action Parameters as required; for example:
   • SNMPVersion: SNMP Version, valid values of 1, 2 or 3 (default '1')
   • TargetAddress: Trap Target Address(es), comma separated (default 'localhost')
   • TargetPort: Trap Target Port (default '162')
   • CommunityString: SNMP Community String (default 'public')

Filtering forwarded alarms

The default rule condition statement can be customized to filter forwarded alarms based on the event properties.

To suppress sending an SNMP Trap for an alarm cleared event, modify the condition statement from:

true

to:

!@event.get("isCleared")

To suppress sending an SNMP Trap for alarm cleared and alarm acknowledged events, update the condition statement to:

!@event.get("isCleared") && !@event.get("isAcknowledged")

Notes:

1. These conditions are also applicable to BSM All Events rule.
2. To customize built-in rules, it is recommended to modify a copy of the rule. This prevents that an upgrade overwrites the changes.

Additional information about the Forward Alarms as SNMP Traps action and available parameters can be found under the Manage Rules section of the Foglight documentation.

1. From the Web Interface access the Help section from the right side Actions Panel (Classic Console) or top right corner menu (Angular UI)
2. Search for Manage Rules
3. Go to section Editing rule action parameters > Send SNMP Trap Actions

Information on the event properties is available on the same documentation under section Write a conditional expression for an event-driven rule.

Other related solutions:
Unable to use Send SNMP Trap Action from Event Driven rules