Looks like its been taken away....
(From the help files)
Note: The Layer 2 (L2) Switch form is not applicable to MCD for Industry Standard Servers (ISS).
The Layer 2 (L2) Switch form is used to program global settings and to configure the Ethernet ports for the Layer 2 switch. This form is used for the CXi, CXi II, MXe, MXe Server and AX controllers.