Cloud Foundation uses a construct called a network pool to automatically configure VMkernel ports for vSAN, NFS, and vMotion.
Cloud Foundation uses an Internet Protocol Address Management (IPAM) solution to automate the IP configuration of VMkernel ports for vMotion, vSAN, and NFS (depending on the storage type being used). A network pool contains network information details for each network. For example:
When a server is added to the inventory of Cloud Foundation, it goes through a process called host commissioning. During this process, the hosts are associated with an existing network pool. When the host is provisioned during the create VI workload domain, add cluster, or add host workflow, it automatically configures the VMkernel ports and allocates IP addresses for vMotion, vSAN, and NFS from the network pool the host was associated with.
You can expand the Included IP address range of a network pool at any time, however you cannot modify the other network information. Ensure you have defined each subnet in the network pool to account for current and future growth in your environment.