Alert suppression is a feature that allows you to create conditions that prevent an alert from being triggered or sent if certain criteria are met. This can help you avoid receiving multiple or unnecessary alerts from a single event or a complex situation. For example, if you have a router that connects your SolarWinds server to a remote site with critical devices, you may not want to receive alerts about those devices if the router is down, as the problem is not with the devices but with the router. In this case, you can configure alert suppression to suppress the alerts for the devices if the router is down. To do this, you need to select the option "Suppress the alert if all of the following apply" and add the conditions "Node Name is equal to 'target'" and "Node Status is equal to 'Down'". This means that the alert will be suppressed only if both conditions are true, i.e., the router with the name 'target' is down. If the router is up or has a different name, the alert will not be suppressed. References: Alert suppression - SolarWinds; Alert Suppression - Forum - Network Performance Monitor (NPM) - THWACK