When modelling the VNM in the landscape by connecting it to the nearest switch, it returns a black Link: Unable to Render Topology.
Looking at the Neighbors of the switch, the VNM is not there. Looking at the attribute 0x12a8c (Neighborlist), this does not update.
Testing the fault isolation when disabling the switch, it suppresses the connected switch immediately, together with all attached devices after the switch.
One would expect an alarm to be present. The simple rule of thumb for creating connections is:
DX NetOps Spectrum Release: 20.2 or later
For situations where the VNM model is not actually connected to a device in the landscape, e.g. such as tenanted environments, you should change the fault isolation settings on the VNM model, to place the alert on a device in the fault domain.
The default behavior is to place alerts on the fault isolation model. This is found on:
VNM model -> Fault Isolation subview -> "Unresolved Fault Alarm Disposition"