Alerts Suppression

Hi,

I have the following nodes setup on each clusters:

INTERNET --> Router (Gateway) --> LAN Switch --> 6 Servers

Each node has SNMP community string and Location setup and are all currently manage by NPM. For example, each nodes have a location "Australia" so that on my All Nodes Tree, the nodes are categorize by locations "Countries".

I need to setup an alert suppression where if the router gateway goes down but LAN Switch and 6 Servers are still up but just not reachable because of the router gateway, I do not want 8 email alerts sent on my inbox stating router, switch and 6 servers down.

My trigger condition:

Trigger alert when all of the following apply:
Node Status is not equal to UP

Trigger alert when any of the following apply:
Location is equal to Australia

Previously, I set up the following alert suppression on the same alert above but did not work:

Suppress alert when any of the following apply:
Node Name is equal to "NODE HOSTNAME" <-- Router Gateway HOSTNAME

Suppress alert when all of the following apply:
Node Status is not equal to Up

Please confirm if this is setup correct. Am I meant to create 2 alerts, one for the trigger/reset and two for the suppression?

Thanks