NETGEAR GS724T-300NAS manual Additional Troubleshooting Suggestions, Network Adapter Cards

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GS716T/GS724T Hardware Installation Guide

Table A-1. Troubleshooting Chart

Symptom

Cause

Solution

 

 

 

A segment or device is

One or more devices are

Verify that the cabling is correct. Ensure all

not recognized as part of

not properly connected,

connectors are securely positioned in the required

the network.

or cabling does not meet

ports. Equipment may have been accidentally

 

Ethernet guidelines.

disconnected.

 

 

 

ACT LED is flashing

A network loop

Break the loop by ensuring that there is only one

continuously on all

(redundant path) has

path from any networked device to any other

connected ports and the

been created.

networked device.

network is disabled.

 

 

 

 

 

Additional Troubleshooting Suggestions

If the suggestions in Troubleshooting Chart do not resolve the problem, refer to the troubleshooting suggestions in this section.

Network Adapter Cards

Ensure the network adapter cards installed in the PCs 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 problem by implementing the new changes, one step at a time. Ensure that cable distances, repeater limits, and other physical aspects of the installation do not exceed the Ethernet limitations.

Switch Integrity

If required, verify the integrity of the switch by resetting the switch. To reset the switch, remove the AC power from the switch and then reapply AC power. If the problem continues, contact NETGEAR technical support. In North America, call 1-888-NETGEAR. If you are outside of North America, please refer to the support information card included with your product.

A-20

Troubleshooting

v1.0, January 2011

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Contents NETGEAR, Inc GS716T/GS724T Hardware Installation GuideTrademarks Contents Appendix B Technical Specifications Index Conventions, Formats and Scope About This ManualRevision History Overview Chapter IntroductionFeatures Package Contents GS716T/GS724T Hardware Installation Guide Chapter Physical Description GS716T Front and Back Panel ConfigurationSystem LEDs 10/100/1000 Mbps Ethernet Ports SFP Ports RS-232 Power Connector GS724T Front and Back Panel ConfigurationPort LEDs LED DesignationsPort DesignationSystem LEDs Device Hardware InterfacesRJ-45 Ports SFP Gbic Module Factory Defaults ButtonChapter Applications Desktop SwitchingApplications Characteristics Requirements Chapter InstallationPreparing the Site Installing the Switch on a Flat Surface Installing the SwitchInstalling the Switch in a Rack Checking the Installation Installing an SFP Gbic Module Connecting Devices to the SwitchApplying AC Power Managing the Switch using a Web Browser or the PC Utility Troubleshooting Chart Appendix a TroubleshootingSymptom Cause Solution Configuration Additional Troubleshooting SuggestionsSwitch Integrity Network Adapter CardsAuto-Negotiation Network Protocol and Standards Compatibility Appendix B Technical SpecificationsManagement InterfacePower Supply Performance SpecificationsPhysical Specifications Environmental SpecificationsModules Numerics IndexGS716TGS724T Hardware Installation Guide Index-29