Only the following vCloud network types consume network pools:

Organization virtual datacenter routed networks.

Organization virtual datacenter isolated networks.

vApp networks.

Although the VCDNI-backed network pool provides Layer 2 (Ethernet) isolation, the use of routing or NAT capabilities at the vCloud Networking and Security Edge device can provide connectivity to externally connected networks at Layer 3.

VCDNI uses encapsulation technology and therefore requires a larger Ethernet frame to be sent over the wire. To eliminate fragmentation of Ethernet frames, increase the MTU size on the physical network and network pool.

It is recommended to increase the MTU size on the physical devices backing the VCDNI network pool to 1524 bytes.

It is also recommended to increase the MTU size on the network pool itself to 1524 bytes.