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Dimension ES-1124 Ethernet Switch
3-2 Troubleshooting
1 Verify that the attached device(s) is turned on and properly connected to your switch.
2 Make sure the Network Interface Cards (NICs) are working on the attached devices.
3 Verify that proper network cable type is used and its length does not exceed 100 meters. For more information
on network cable types, see the Front Panel Connections section.
3.1.4 FDX/COL LED
The FDX/COL LED blinks.
Table 3-4 Troubleshooting FDX/COL LED
STEP CORRECTIVE ACTION
1 Some collisions in the network are normal. If the FDX/COL (Giga) LED blinks continuously, proceed to the steps
below.
2 Verify that proper network cable type is used and its length does not exceed 100 meters. For more information
on network cable types, see the Front Panel Connections section.
3 Your network is busy. Try sending large files later, reduce the number of users or segment your network.
3.2 Improper Network Cabling and Topology
Improper network cabling or topology setup is a common cause of poor network
performance or network failure.
Table 3-5 Troubleshooting Improper Network Cabling and Topology
DESCRIPTION PROBLEMS AND CORRECTIVE ACTION
Faulty cables Using faulty network cables may affect data rates and have an impact on your network
performance. Replace with new standard network cables.
Non-standard network
cables
Non-standard cables may increase the number of network collisions and cause other network
problems that affect your network performance. Refer to the Front Panel Connections section
for more information on network cable types.
Cabling Length If you use longer cables than are needed, transmission quality may be affected.
The network cables should not be longer than the limit of 100 meters.
Too many hubs between
the computers in the
network
Too many hubs (or repeaters) between the connected computers in the network may increase
the number of network collision or other network problems. Remove unnecessary hubs from
the network.
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