Accton Technology 12se manual Appendix A Troubleshooting, Diagnosing Hub Indicators

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Appendix A: Troubleshooting

Diagnosing Hub Indicators

The Fast EtherHub-12se can be easily monitored through its comprehensive panel indicators. These indicators assist the network manager in identifying problems the hub may encounter. This section describes common problems you may encounter and possible solutions.

Symptom: Power indicator does not light up.

Cause: Defective power supply or Power LED.

Solution: Have your unit’s power supply or dealer assistance.

Symptom: Partition indicator lights up.

Cause: Hub has partitioned a port.

Solution: If port partitioning has occurred, the hub will automatically enable the port when the faulty condition disappears.

Symptom: Link/Traffic indicator remains unlit.

Cause: Workstation’s network adapter, cable or hub port is defective.

Solution: The most common cause is a defective network adapter or cable connection. Check the corresponding cable connections, or the workstation’s network adapter for possible defects. Verify that the correct cable type is being used. Replace the defective cable or adapter. Use 100W Category 5 STP or UTP cable for RJ-45 connections and 50/125 or 62.5/125 mm multimode cable for fiber optic connections.

Use the diagnostic procedures described in Chapter 2 and the following section to verify that all other system components are functioning properly. If you still cannot resolve the problem, contact your Accton distributor for assistance.

Troubleshooting A-1