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Troubleshooting Information
Refer to this table and the information that follows the table to troubleshoot your hub.
Symptom | Cause | Solution | |
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| |
Amber Col LED | There is data collision on | Data collision is normal on Ethernet networks. | |
blinks. | the network. | No action is required. | |
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| |
Amber Col LED blinks | There is data collision on | Make sure connected devices are operating in | |
excessively. | the network because the | ||
| network is extremely | with devices that operate in | |
| busy | If you suspect that there might be a defective | |
| or defective devices are | device on the network, disconnect devices one | |
| connected on the | at a time to isolate the defective unit on the | |
| network that cannot | network. | |
| detect network traffic or | If the network is extremely busy, you may have | |
| collision. | to segment the network with an Ethernet switch | |
|
| such as a NETGEAR Ethernet switch or to | |
|
| upgrade your network to Fast Ethernet | |
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| operation. | |
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| |
| Wrong or miswired | Make sure the correct UTP cables are used. | |
| cables are used. | See the table in the installation section of this | |
|
| guide for cable use and Normal/Uplink push | |
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| button information. Note that home telephone | |
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| cables can cause a collision condition and | |
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| cannot be used in place of UTP cables. | |
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| |
Green Link LED is | The port is not detecting | Check for a bad cable, cable pairs that are not | |
off when a cable is | a successful link. | correctly wired, or loose connectors. Make sure | |
attached. |
| that there is power to both the hub and the | |
|
| Ethernet transceiver on the connected device. | |
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| |
Green Link LED is not | The port is not detecting | Check for a bad cable, cable pairs that are not | |
blinking when there is | data transmission. | correctly wired, or loose connectors. Make sure | |
data transmission. |
| that there is power to both the hub and the | |
|
| Ethernet transceiver on the connected device. | |
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| |
Green Active LED on | The port is not detecting | Make sure that each segment is terminated | |
the BNC port is not | a successful link. | with a BNC 50 terminator at both ends. Check | |
on when the port is |
| for a bad cable. | |
connected. |
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| |
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| |
Green Rx LED on | The port is not detecting | Check for a bad cable or loose connectors. | |
the BNC port is not | data transmission. | Make sure that there is power to both the hub | |
blinking when there is |
| and the connected device. | |
data transmission. |
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| |
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| |
Green Active LED on | The port is not detecting | Make sure that the AUI transceiver is | |
the AUI port is not | a successful link. | functioning properly, the coaxial segment is | |
on when the port is |
| terminated correctly, the segment is not | |
connected. |
| disconnected along the cable length, and the | |
|
| signal quality error (SQE) test on the | |
|
| transceiver is disabled. Refer to your | |
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| transceiver documentation for instructions on | |
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| setting the SQE. | |
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| |
Green Rx LED on the | The port is not detecting | Check for a bad cable or loose connectors. | |
AUI port is not | data transmission. | Make sure that there is power to both the hub | |
blinking when there is |
| and the connected device. | |
data transmission. |
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| |
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Model EN104/EN108/EN116 Ethernet Hub Installation Guide