A network pool is a group of undifferentiated networks that is available for use in an organization virtual datacenter to create vApp networks and certain types of organization virtual datacenter networks.

A network pool is backed by vSphere network resources such as VLAN IDs or port groups. vCloud Director uses network pools to create NAT-routed and internal organization virtual datacenter networks and all vApp networks. Network traffic on each network in a pool is isolated at layer 2 from all other networks.

Each organization virtual datacenter in vCloud Director can have one network pool. Multiple organization virtual datacenters can share the same network pool. The network pool for an organization virtual datacenter provides the networks created to satisfy the network quota for an organization virtual datacenter.

A VXLAN network pool is created when you create a provider virtual datacenter. In most cases, this is the only network pool you will need.