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6
CHAPTER
SCI Interface Troubleshooting
SCI Switch
General Hardware Inspection
Perform the following checks to determine the physical state of various SCI
subsystem components. Verify that:
4 All SCI scrubber jumpers are properly set, depending on the cluster topology.
4 All SCI cables are properly seated.
4 All SCI switches have power applied
4 No SCI status LEDs are red—see Table 6–1 and Table 6–2
SCI Switch Status LED Locations
Clusters with three or four nodes can be connected through one or two SCI switches.
The switch status LEDs provide information that can be used to troubleshoot SCI
switch failures (Figure 6–1). Guidelines for interpreting these LEDs are provided in
"Port Status LEDs" on page 38" and "General Switch Status LED" on page 39.
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