Example of a dependent node alert suppression
This example assumes that you have configured an alert which notifies you when nodes on a subnet become inoperative. In this specific case, you configured an alert to notify you when workstations on a segment of your network on the other side of a particular router are unavailable. You only want to be alerted to Node failures if the router is still operational.
The router should not be included in the group of monitored objects. The failure of the router is the trigger for suppressing the alert. Create another alert to be notified of the failure of the router.
- Configure an alert that triggers on failure of devices downstream of the router that serves the subnet (Node Down Alert.) Downstream is relative to the location of the computer running Toolset Network Performance Monitor.
- On the Alert Suppression tab, click Suppress this Alert if ANY of the selected Suppressions are Active.
- Click Add.
- Select the property to monitor.
In this example, Node Status.
You can select only one property per suppression condition.
- Click the Network Object tab, and then select the router between NPM and the subnet for which you have configured the Node Down Alert.
The object types available on the Network Object tab depend on the choice you made on the Properties to Monitor dialog. If you chose to monitor an interface-related property, you would see a list of available Interfaces. You chose a node-related property, Toolset Network Performance Monitor presents a list of nodes.
- Click the Suppression Trigger tab, and then select Down, Warning, and Unknown from the list, and then click OK.
- Select the new suppression condition.
Suppressions are enabled automatically.
- To add another condition, repeat this procedure starting with Step 3.