In Cisco MDS 9000 Series Switches, configuring Fibre Channel over Ethernet (FCoE) requires the Virtual Fibre Channel (vFC) interface to be correctly mapped to a VSAN (Virtual Storage Area Network) to establish connectivity between the server and storage. The vFC 3 interface has been correctly bound to Ethernet 1/3, but it must be added to VSAN 100 for proper forwarding of FCoE traffic.