Currently what we've found is that interface availability is does not change when a node is down, as the interface is not in a down state. In regards to interfaces, this needs to be changedf, as in all actuality, when a node is down, the interface will not be available until the node is back up. By reporting interface availability as 100%, this is technically false reporting. It's understandable with parent and child devices, but not with nodes and interfaces. The calculation should be changed to take into affect when the node itself is actually down as the ports are then not usable, and not available.
