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Chapter3 Troubleshooting
Troubleshooting a Network or Fibre Channel Port Connection
3-4
Cisco SN 5428 Storage Router Hardware Installation Guide
OL-4796-01
Troubleshooting a Network or Fibre Channel Port
Connection
If an LED on a network or Fibre Channel port indicates a problem, follow the
steps in the following sections to help isolate the problem:
• Troubleshooting a Connection to a Gigabit Ethernet Port, page 3-4
• Troubleshooting a Connection to a 10/100 Ethernet Management or 10/100
Ethernet HA Port, page 3-5
• Troubleshooting a Connection to a Fibre Channel Port, page 3-6
Troubleshooting a Connection to a Gigabit Ethernet Port
A bad connection to a Gigabit Ethernet (GE 1 or GE 2) port is indicated by the
LINK LED not being on. If the LINK LED is not on, follow these steps to help
isolate the problem:
Step 1 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 LINK LED turns on,
then the cable was not connected properly.
• If the LINK LED remains off, replace the cable. If the LINK LED turns on,
then the cable was defective.
• If the LINK LED remains off, the cable is most likely not the problem.
Continue to the next step.
Step 2 Check the external end system, switch, or router to which the port is connected.
• If the external end system, switch, or router is operating properly, continue to
the next step.
• If the external end system, switch, or router is not operating properly, then
correct the problem. If the LINK LED turns on, then the problem was with
the external end system, switch, or router.
• If the LINK LED remains off, continue to the next step.