This object specifies the FCoE modes the switch supports.
The object has four available values:
1: non-FCoE mode.
2: FCF mode.
3: NPV mode.
4: Transit mode.
The switch mode can only be converted from non-FCoE mode to one of FCoE
modes, or vice versa, but cannot be converted directly among the other
three FCoE modes.
To convert among the other three FCoE modes, the switch should first
be converted to non-FCoE mode. After converting the switch to non-FCoE
mode, FCoE-related configurations in the original FCoE mode will be
cleared.