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126 MPCMM0001 Chassis Management Module Software Technical Product Specification
Front Panel LEDs
12.6 LED Boot Sequence
During the boot process, the user LEDs will change in a pattern, as described in Table 55, “LED
Event Sequence”, to indicate boot progress. The user LEDs will be off by the time the CMM
software is fully loaded. Once the CMM is up, the administrator can control the LED through
standard interfaces or via programmatic control. The following table describes the sequence of
events following the insertion of the CMM and the corresponding LED state for each event.
Table 55. LED Event Sequence
Event Health LED
Hot Swap
LED
LEDA LEDB LEDC LEDD
Initial insertion/
power on, with
ejector latch
closed
Flash red,
then solid
green
Solid blue Off Off Off Off
Redboot
initialization
Solid green
Momentarily
off, then
solid blue
Solid green Off Off Off
Redboot
initialization
finished, user
script running
Solid green Solid blue Solid green Solid green Off Off
Linux
initialization
finished, OS at
init level 1
Solid green Solid blue Solid green Solid green Solid green Off
CMM init script
running,
command
handler app
loaded, CMM at
M1
Solid green
Momentarily
off, then
solid blue
Momentarily
off, then
solid green
Momentarily
off, then
solid green
Momentarily
off, then
solid green
Solid green
Initial CMM
initialization
finished (i.e.,
FRU election),
CMM at M2
Solid green
Long blink,
100 ms. Off,
900 ms solid
blue
Off Off Off Off
CMM at M3 or
M4
Solid green Off Off Off Off Off