IBM System Storage N3700, Hardware And Service Manual

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Interpreting Ethernet LEDs on an N3700 storage system
Use the following table to interpret the Ethernet port LEDs on the N3700 storage
system CPU module.
Table 12. Ethernet LED interpretation
Link LED (green) Activity LED (amber) State
Off Off Network connection is not
present.
On Off Network connection is
present but there is no data
input or output occurring.
On On/blinking Network connection is
present and data input and
output is occurring.
Interpreting Fibre Channel LEDs on an N3700 storage system
Use the following table to interpret the Fibre Channel LEDs on the N3700 storage
system CPU module.
Table 13. Fibre Channel LED interpretation
Fault LED
(amber)
Fibre Channel
B LED (green)
Fibre Channel
C LED (green) State Action
Off On On Normal None.
Off Off On Loop B fault Fibre Channel B
loop is open and
needs to be
fixed.
Off On Off Loop C fault Fibre Channel C
loop is open and
needs to be
fixed.
On On On CPU module
fault
See Note below.
1
Fibre Channel C LED
Fault LED
Fibre Channel B LED
Activity LED (amber)
Link LED (green)
Figure 8. Ethernet and Fibre Channel LEDs
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IBM System Storage N series: N3700 Hardware and Service Guide