I have noticed that IPAM lack features in calculating supernet utilization.
Let's say I have following tree:
Supernet 192.168.1.0 / 23
-- Subnet 192.168.1.0 / 30
And I will put all individual IP addresses in subnet 192.168.1.0 / 30 as Used.
Subnet is shown as 100% used, which is correct. However IPAM will automatically show Supernet utilization as 100% as well.
I believe this is less useful, as I can create a lot more CIDR 30 subnets within that one CIDR 23 supernet.
In my opinion, the better way would be to calculate the remaining amount of free space within that supernet.
I kindly ask to implement this approach in the new IPAM release. The best of both worlds, would be to have both values available, such as:
a) Overall used supernet space
b) Aggregated used subnets space within one supernet