Netgear GSM7224 설치 가이드
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APPENDIX B: TROUBLESHOOTING
This appendix provides information about troubleshooting the NETGEAR Model GSM7224 Managed Layer
2 Gigabit Ethernet Switch.
2 Gigabit Ethernet Switch.
Troubleshooting Chart
The table below lists symptoms, causes, and solutions of possible problems.
Table B-1. Troubleshooting Chart
Symptom
Cause
Solution
Power LED is off.
No power is received
Check the power cord connection at the switch
and the connected device.
and the connected device.
Make sure all cables used are correct and
comply with Ethernet specifications.
comply with Ethernet specifications.
Link LED is off or intermittent.
Port connection is not
working.
working.
Check the crimp on the 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.
Check for a defective adapter card, cable, or
port by testing them in an alternate
environment where all products are functioning.
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.
Check for a defective adapter card, cable, or
port by testing them in an alternate
environment where all products are functioning.
File transfer is slow or
performance degradation is a
problem.
performance degradation is a
problem.
Half- or full-duplex setting
on the switch and the
connected device are not
the same.
on the switch and the
connected device are not
the same.
Make sure the attached device is set to auto
negotiate.
Check System message log.
negotiate.
Check System message log.
A segment or device is not
recognized as part of the network.
recognized as part of the network.
One or more devices are not
properly connected, or
cabling does not meet
Ethernet guidelines.
properly connected, or
cabling does not meet
Ethernet guidelines.
Verify that the cabling is correct. Be sure all
connectors are securely positioned in the
required ports. Equipment may have been
accidentally disconnected.
connectors are securely positioned in the
required ports. Equipment may have been
accidentally disconnected.
ACT LED is flashing continuously
on all connected ports and the
network is disabled
on all connected ports and the
network is disabled
A network loop (redundant
path) has been created (see
Figure 2-3).
path) has been created (see
Figure 2-3).
Break the loop by ensuring that there is only
one path from any networked device to any
other networked device.
one path from any networked device to any
other networked device.
Additional Troubleshooting Suggestions
If the suggestions in Table B-1 do not resolve your problem, refer to the troubleshooting suggestions
below:
Network Adapter Cards
Make sure the network adapter cards installed in the computers are in working condition and the software
driver has been installed.
below:
Network Adapter Cards
Make sure the network adapter cards installed in the computers are in working condition and the software
driver has been installed.
Configuration
If problems occur after altering the network configuration, restore the original connections and determine
the cause by implementing the new 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.
If problems occur after altering the network configuration, restore the original connections and determine
the cause by implementing the new 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.