Final answer:
A special requirement for FCoE frames is that they must be at least 2,214 bytes to encapsulate standard Fibre Channel frames without fragmentation, often using padding to meet this size requirement.
Step-by-step explanation:
One special requirement related to FCoE (Fibre Channel over Ethernet) frames is that they must maintain a minimum size of 2,214 bytes, which is the size required for the encapsulation of a standard Fibre Channel frame inside an Ethernet frame. This size ensures that FCoE frames are not fragmented, maintaining Fibre Channel protocol requirements. To accommodate for Ethernet minimum frame size and avoid fragmentation, network devices often use padding to increase any smaller Ethernet frame to the required minimum size for FCoE transmission.