Appendix A: Troubleshooting
Diagnosing Hub Indicators
The Fast EtherHub 3500 Series 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: Link indicator does not light up (green) after making a connection.
Cause: Network interface (e.g., a network adapter card on the attached device), network cable, or hub port is defective.
Solution: Verify that the hub and attached device are powered on. Be sure the cable is plugged into both the hub and corresponding device. Verify that the proper cable type is used and its length does not exceed specified limits (Chapter 2). Check the adapter on the attached device and cable connections for possible defects. Replace the defective adapter or cable if necessary.
Symptom: Power indicator does not light up (green) after power on.
Cause: Defective power outlet, power cord, or internal power supply.
Solution: Check the power outlet by plugging in another device that is functioning properly. Check the power cord with another device. If these measures fail to resolve the problem, have the unit’s power supply replaced by a qualified Accton distributor.
Use the diagnostic procedures described in Chapter 2 to verify that all other system components are functioning properly. If any component fails the diagnostic test, contact your Accton distributor for assistance.
Troubleshooting |
