Once a subnet (let's say a /24) has been split into smaller subnets (e.g. multiple /28) it doesn't seem to be possible to expand some /28 subnets into a larger subnet still within the parent /24. Or merge all of the smaller subnets back into a /24.
For example:
10.0.0.0/24 is split into multiple subnets creating 10.0.0.0/28, 10.0.0.16/28, 10.0.0.32/28, etc.
If the first two /28 subnets then need to be merged to create 10.0.0.0/27 it does not seem possible without first deleting 10.0.0.16/28 (which includes all IP assignments within it) before expanding 10.0.0.0/28.
Similarly, if all subnets within 10.0.0.0/24 then need to be merged back into the single /24 subnet again the only way to do this seems to be to delete all subnets and IPs within the parent.
Am I missing the way to do this or is the functionality simply not present?
It is possible with recompute function inside settings import/export. So you import supernet and start recompute, it will nest more specific subnets inside this supernet.
Once a subnet (let's say a /24) has been split into smaller subnets (e.g. multiple /28) it doesn't seem to be possible to expand some /28 subnets into a larger subnet still within the parent /24. Or merge all of the smaller subnets back into a /24.
For example: 10.0.0.0/24 is split into multiple subnets creating 10.0.0.0/28, 10.0.0.16/28, 10.0.0.32/28, etc. If the first two /28 subnets then need to be merged to create 10.0.0.0/27 it does not seem possible without first deleting 10.0.0.16/28 (which includes all IP assignments within it) before expanding 10.0.0.0/28.
Similarly, if all subnets within 10.0.0.0/24 then need to be merged back into the single /24 subnet again the only way to do this seems to be to delete all subnets and IPs within the parent.
Am I missing the way to do this or is the functionality simply not present?