Silicon Graphics 2400, Owner'S Manual

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Chapter 7: Using the System Controller
The MMSC’s front display and input panel interface is only necessary in the primary rack
of a fabric-interconnected multiple-rack system.
A MMSC must be installed in each rack in a fabric-interconnected multiple-rack system.
Figure 7-1 shows a functional block diagram of the MMSC.
Figure 7-1
MMSC Functional Block Diagram
MMSC Front Panel Display
The MMSC assembly in each rack interfaces with the local MSC RS-232 interface on each
system installed in that rack (see Figure 7-2). The “satellite” processor assembly(s)
interfaces to the master MMSC (with the front panel display). The processor assemblies
in multirack configurations communicate directly via a 10BaseT Ethernet connection.
This scheme provides access to every MMSC and MSC in a fabric-interconnected
multirack system.
Note that the MMSC Ethernet is a closed Ethernet system used by the MMSCs only.
Execute
Cursor placement
Focus Action
Irix OS View
Graph Configure
Irix OS View
A
c
t
i
v
i
t
y
Processors
User System intr io Graphics
0 1 2 3 4 5 6 7
100
0
25
50
75
0.4.1 Oct 23 1996 14:04:38 Current target rack all bay all
Display panel
Menu/Cancel
Display/
Input
controller
Power Control Interface
Power Control Infrastructure
MMSC System Bus
MMSC
IO Ports
Processor
RAM
ROM
(Bootstrap)
Ethernet
controller
MSC A
MSC B
Sys Console-In
Sys Console-Out
Ext. Modem-or-Spare
Spare
MMSC to MMSC
interface 10Base-T