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Chapter 4 Troubleshooting
XMG-100 Series User’s Guide
23
• Make sure the network adapters are working on the attached devices.
• Verify that proper network cable type is used and its length does not exceed 100 meters. For more
information on network cable types, see Table 2 on page 9.
The PoE++ 60W LED is off and/or power is not being supplied to my PoE-enabled device.
• Make sure to connect a PoE-enabled device to your Switch.
• Check your Switch’s PoE MAX LED. If it lights steady yellow, then the Switch’s remaining power budget
is equal to / less than 10 watt.
• Check to see that the power adapter is securely connected to the Switch and an appropriate power
source. Make sure the power source is on and functioning properly.
• Check that the Ethernet cables are connected properly and that you are using the correct type of
Ethernet cable. Contact your local distributor if the problem persists.
4.2 Improper Network Cabling and Topology
Improper network cabling or topology setup is a common cause of poor network performance or even
network failure.
Figure 19 Troubleshooting Improper Network Cabling and Topology
PROBLEM 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 Table 2 on page 9 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.
A loop in the
data path
A data path loop forms when there is more than one path or route between two networked
computers. This results in broadcast storms that will severely affect your network performance.
Make sure there are no loops in your network topology.
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