 Moreover, the need to create forwarding entries for each unicast connection within the full mesh (as opposed to a single VLAN forwarding tree in the case of VLAN connectivity) will quickly become unsustainable as multipoint services become predominant in the near future.Furthermore, the addition of a MAC header augments the frame size by about 128 bits, a significant overhead given the small size (64 byte) of real-time application (e.g.voice and video) packets.