Troubleshooting - NETGEAR FS518 Installation Manual

This chapter provides information about troubleshooting the Model FS518 Fast Ethernet Switch.
Table 5-1 lists symptoms, causes, and solutions of possible problems.
Table 5-1. Troubleshooting Information
Symptom
Power LED is off.
Either 10M, 100M, or
1000M Link LED is
off or intermittent.
One or more
components are
malfunctioning.
A segment or device
is not recognized as
part of the network.

Troubleshooting

Cause
No power is received
at the hub.
Port connection is
not functioning.
Not all system
components are
properly installed.
One or more devices
are not properly
connected or cabling
does not meet
Ethernet guidelines.
Solution
Check the power cord connections for the switch and the
connected device.
Check for a defective adapter card, cable, or port by testing
them in an alternate environment where all products are
functioning.
Make sure all cables used are correct and comply with
Ethernet specifications.
Check the crimp on the RJ-45 connectors or fiber connectors
and make sure that the plug is properly inserted and locked
into the port at both the switch and the connecting device.
Make sure all cables used are correct and comply with
Ethernet specifications. All fiber cables must be crossover
cables for proper communication between the transmit and
receive signals to take place.
Test the components in an alternate environment where all
other components are functioning properly.
Verify that the cabling is correct (refer to
Guidelines"). Be sure all cable connectors are securely
positioned in the required ports. Straight-through cables
should be used for all standard twisted pair connections. Make
sure all devices are connected to the network. Equipment may
have been accidentally disconnected.
Chapter 5
Troubleshooting
Appendix C, "Cabling
5-1