Troubleshooting
A-1
Appendix A: Troubleshooting
Diagnosing Hub Indicators
This Fast Ethernet hub 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 outlet, power cord, or internal power supply.
Solution:
Check power cord and power source connections. If connections are
secure, then try a different outlet, or try a different power cord to see
if the power cord is the problem. If the problem persists, contact
your HP-authorized dealer or reseller.
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 after making a connection.
Cause:
N
etwork interface (e.g., a LAN adapter 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 (Chapter 2), and that its length
does not exceed 100 meters. Check the LAN adapter on the attached
device and cable connections for possible defects. Replace the
defective LAN adapter or cable if necessary
Use the diagnostic procedures described in the following section to verify that
all other system components are functioning properly. If you still cannot
resolve the problem, contact your HP-authorized dealer or reseller.
