To collect accurate usage data, vCloud Usage Meter requires a specific configuration of the metered vCenter Server instances. To access the vCloud Usage Meter Web interface, you must allow access on the appropriate TCP ports.
vCenter Server Clusters
Service providers normally host customer and administrative virtual machines on a single vCenter Server instance. Tenants consume compute resources from the customer virtual machines, whereas service providers use the administrative virtual machines for internal purposes. To ensure accurate reporting to service providers and to VMware, you must apply a degree of separation between customer and administrative virtual machines. The best practice is to create a dedicated cluster for each type. For example, create a Customer cluster to host all customer virtual machines and a Management cluster to host all virtual machines that are vital to the service provider business operations. The separation of the virtual machines based on their function, ensures that vCloud Usage Meter reports do not contain mixed usage data of customer and administrative virtual machines.
After you create dedicated clusters for the virtual machines based on their functions, you must assign proper ESXi licenses to the cluster hosts.
vCloud Usage Meter uses predefined TCP ports. If you manage network components from outside a firewall, you might need to configure the firewall to allow access to the appropriate ports. For information about the ports that vCloud Usage Meter requires, see VMware Ports and Protocols.