9-2
CONTROLLING CONCENTRATOR MODULES AND PORTS
Below the screen header information, the FDDI Configuration screen
displays a representation of the FDMMIM and any FDCMIMs
located in higher numbered slots. The Configuration screen shows
only one FDMMIM, even if more FDMMIMs reside in the hub.
The FDDI Configuration screen does its best to display its location in
the MMAC the way you define it in the Setup screen. However, no
matter what the physical position or slot location, the Chassis Type
in the Setup screen takes precedence. For example, if your
FDMMIM is physically installed in Slot 7 of an MMAC 8, but you
have the Chassis type set to MMAC 3 with a Slot 2 location, the
configuration screen shows the FDMMIM in Slot 2 of an MMAC 3.
9.1.1 FDDI Configuration Screen Data
Each FDCMIM slot shown in the FDDI Configuration screen
displays the configuration of the resident FDCMIM-04 or FDCMIM-
08. (The FDCMIM provides M ports for the FDMMIM. By itself, an
FDCMIM cannot connect to the FDDI dual ring, so it does not show
an FDDI Ring Connection Status field.)
Figure 9-2 shows the fields within a single configuration slot. The
Concentrator Connection Status field, the ENA/DIS-BOARD field,
and the port status fields only appear on MIMs that have
concentrator (M type) ports.
Concentrator Connection Status when ON, indicates M ports
connect to the MMAC FDDI bus, and to each other. When OFF, the
module becomes a stand alone concentrator; M ports do not connect
to the MMAC, but ports where Port Status = ON can still pass
packets among themselves.
To change the board status:
1.
Highlight the ENA/DIS-BOARD command below the module.
2.
Press RETURN on the keyboard to toggle the selection.
3.
Highlight the EXECUTE command at the bottom of the screen,
and press RETURN.
