4. Networking Examples : 4.6 VCDNI-Backed Organization Network : 4.6.3 Design Implications
   
4.6.3 Design Implications
*Only specific vCloud network types consume network pools, as follows:
*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.
*The 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.
See the vCloud Director documentation for more information.