Simple alert not working

Hi guys,

I have created some very simple alerts in Orion Alert Manager and they are not triggering as I would like.

I want to be notified if a switch or router in my network goes down. The alert rule is as follows:

Trigger Condition:

Trigger Alert when ALL of the following apply

     Node Status is equal to Down

     Trigger Alert when ANY of the following apply

          Vendor is equal to Cisco

          Vendor is equal to Rapid City Communication

          Vendor is equal to Synoptics

Reset Condition:

Reset Alert when ALL of the following apply

     Node Status is equal to Up

Alert Suppression:

CriticalNetworkComponent is equal to Yes

Trigger Action:

NetPerMon Event Log: Node ${NodeName} is ${Status}

Send email/page to [my email address]

CriticalNetworkComponents is a custom property that has a yes/no value. Only a handful of devices on the network have a yes assigned to that field.

Right now, devices go down and I don't receive any email notification but when I check the NPM event log, the event is there.

What am I doing wrong?

Regards,

David Smith.