Multilayer Switch Feature Card (MSFC) does not show up in the show module command output because the MSFC is in ROMmon mode.
The show module command output does not show module 15 or 16, even though it is physically present.
The session 15, session 16 or reset 15 commands return with the module # not installed error message.
To resolve this issue, perform these steps:
At this point, you should see the rommon> prompt.
For example, ctrl-break to gain access to ROMmon mode.
An MSFC may go into ROMmon for these reasons: