Manually allocate a CIDR to a pool to reserve IP address space
Follow the steps in this section to manually allocate a CIDR to a pool. You might do this in order to reserve a CIDR within an IPAM pool for later use. You can also reserve space in your IPAM pool to represent an on-premises network. IPAM will manage that reservation for you and indicate if any CIDRs overlap with your on-premises IP space.
To release a manually allocated CIDR, see Release an allocation.