Information About UUFB
Unknown unicast packet flooding (UUFB) limits unknown unicast flooding in the forwarding path to prevent the security risk of unwanted traffic reaching the Virtual Machines (VMs). UUFB prevents packets received on both vEthernet and Ethernet interfaces destined to unknown unicast addresses from flooding the VLAN. When UUFB is applied, Virtual Ethernet Modules (VEMs) drop unknown unicast packets received on uplink ports, while unknown unicast packets received on vEthernet interfaces are sent out only on uplink ports.