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C
HAPTER
5: P
OWER
-O
N
on the left side of the LED panel. Table 9 shows the correlation between
the current system state and SYS LEDs display. For example, during
normal operation the PWR LED is on, the FAIL LED is off and the ACT LED
is flashing. The LEDs on the right side of the panel indicate the status of
the Ethernet port, the Service port and the Control port.
Figure 9
Switching Module LEDs
The following table also provides information about the LED display of
system states but is organized by system status LED.
Control
10BASE-T
Status
Service
Status
Status
PWR
ACT
FAIL
Table 9
CoreBuilder System States
System State
Power
(green)
Fail
(red)
Activity
(yellow)
10BASE-T
Status
(green)
Service Port
Status
(green)
Control
Terminal Status
(green)
Power-on On Off On On Flashing Flashing
Normal operation On Off Flashing On On On
Hardware fault On On Off Off Off Off
Software fault On Off Not flashing Undetermined Undetermined Undetermined
No power to unit Off Off Off Off Off Off
Table 10
Description of Switching Module LEDs
LED Color Description Source
PWR (Power) Green DC power input active. Hardware
ACT (Activity) Yellow Should blink continuously when
operational.
Software
FAIL Red CPU failure. Hardware
CPU or
Watchdog
10BASE-T
STATUS
Green 10BASE-T link OK. The Ethernet link is
active.
Hardware
Ethernet
controller