Every Provider VDC includes a VXLAN network pool.
This pool is given a name derived from the name of the containing provider virtual datacenter and attached to it at creation. You cannot delete or modify this network pool. If you rename a Provider VDC, its VXLAN network pool is automatically renamed.
vCloud Director VXLAN networks are based on the IETF VXLAN standard, and provide the following benefits.
Logical networks spanning layer 3 boundaries
Logical networks spanning multiple racks on a single layer 2
Greater scale (up to 16 million network addresses)
For more information about VXLAN networks in a vCloud Director environment, see the NSX Administration Guide.