Chapter 3 Troubleshooting
Troubleshooting a Network or Fibre Channel Port Connection
3-6
Cisco SN 5428-2 Storage Router Hardware Installation Guide
OL-4797-01
Troubleshooting a Connection to a Fibre Channel Port
A bad connection to a Fibre Channel port (FC 1 through FC 8) is indicated by the
LOG LED flashing twice per second. If the LOG LED is flashing twice per
second, follow these steps to help isolate the problem:
Step 1 Make sure that the Domain ID of the SN 5428-2 is configured properly. For
information about configuring the Domain ID, see the Cisco SN 5428-2 Storage
Router Software Configuration Guide. If the Domain ID is configured properly,
continue to the next step.
Note When a connection problem is resolved, the LOG LED will turn on after
a brief logging-in period that is indicated by the LOG LED flashing once
per second.
Step 2 Check to make sure that the cable is connected properly and in good operating
condition.
• Disconnect and connect both ends of the cable. If the LOG LED turns on, then
the cable was not connected properly.
• If the LOG LED remains off, replace the cable. If the LOG LED turns on, then
the cable was defective.
• If the LOG LED remains off, the cable is most likely not the problem.
Continue to the next step.
Step 3 Check the device or switch to which the port is connected.
• If the device or switch is operating properly, continue to the next step.
• If the device or switch is not operating properly, then correct the problem. If
the LOG LED turns on, then the problem was with the device or switch.
• If the LOG LED remains off, continue to the next step.
Step 4 Replace the SFP module.
• If the LOG LED turns on, the problem was the SFP module.
• If the LOG LED remains off, contact a customer service representative for
instructions.