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50 Troubleshooting
Is a connected host port’s Host Link Status LED off?
Is a connected port’s Expansion Port Status LED off?
Is a connected port’s Network Port Link Status LED off?
Answer Possible reasons Actions
No System functioning properly. No action required.
(see Link LED note: page 60)
Yes The link is down. • Check cable connections and reseat if necessary.
• Inspect cables for damage.
• Swap cables to determine if fault is caused by a
defective cable. Replace cable if necessary.
• Verify that the switch, if any, is operating properly. If
possible, test with another port.
• Verify that the HBA is fully seated, and that the PCI slot is
powered on and operational.
• In SMU, review event logs for indicators of a specific
fault in a host data path component.
• Contact an authorized service provider for assistance.
• See Isolating a host-side connection fault on page 52.
Answer Possible reasons Actions
No System functioning properly. No action required.
Yes The link is down. • Check cable connections and reseat if necessary.
• Inspect cable for damage.
• Swap cables to determine if fault is caused by a
defective cable. Replace cable if necessary.
• In SMU, review event logs for indicators of a specific
fault in a host data path component.
• Contact an authorized service provider for assistance.
• See Isolating a controller module expansion port
connection fault on page 53.
Answer Possible reasons Actions
No System functioning properly. No action required.
Yes The link is down. Use standard networking troubleshooting procedures to
isolate faults on the network.