Managed Layer 2 Switches GSM7224 and GSM7248 Hardware Installation Guide
Table 3-1. Troubleshooting Chart (continued)
Problem | Cause | Solution |
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A segment or device is not | One or more devices are not | Verify that the cabling is correct. Be sure |
recognized as part of the | properly connected, or cabling | that all connectors are securely positioned |
network. | does not meet Ethernet | in the required ports. Equipment might have |
| guidelines. | been accidentally disconnected. |
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|
|
ACT LED is flashing | A network loop (redundant | Break the loop by ensuring that there is only |
continuously on all connected | path) has been created. | one path from any networked device to any |
ports, and the network is |
| other networked device. |
disabled. |
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Additional Troubleshooting Suggestions
If the suggestions in Table
•Network adapter cards
Make sure that the network adapter cards installed in the PCs are in working condition and that the software driver has been installed.
•Configuration
If problems occur after you change the network configuration, restore the original connections. Then find the problem by making the changes, one step at a time. Make sure that cable distances, repeater limits, and other physical aspects of the installation do not exceed the Ethernet limitations.
•Switch integrity
You can verify the integrity of the switch by resetting the switch. To reset the switch, use the Tools > Reset command, or remove AC power from the switch and then reapply AC power. If the problem continues, contact NETGEAR Technical Support.
•Auto-negotiation
The copper 10/100/1000 Mbps ports negotiate the correct duplex mode and speed if the device at the other end of the link supports
Troubleshooting |