You will have to create a new view for the same.
1. Settings -> View -> Add New View
2. Give Name of View, Type of View: Summary -> Submit
3. Under the Column -> Click on +
4. Search for 'Nodes Not Up' -> Select that resource -> Add selected resource
5. Click on Preview Button
6. Next to Nodes Not Up -> Click on Edit [Give appropriate Filter Nodes (SQL) like Vendor and IP Range]
7. Click on Done