Troubleshooting Modules; Interface Modules; Switch Fabric Management Modules - 3Com 4005 Installation And Maintenance Manual

Troubleshooting
Modules

Interface Modules

Switch Fabric
Management Modules
This section describes troubleshooting for the interface modules and the Switch
Fabric Management Module.
Before you contact your supplier, a technical support vendor, or 3Com, write
detailed notes of the situation, including the order of events and who was
involved. In addition, have ready key information about your network, including
other equipment, applications, and protocols in use.
Consider browsing the information on the support page of the 3Com Web site. In
particular, the 3Com Knowledgebase may contain technical tips or other
information that may help you.
For global 3Com contact information, see the Appendix A in this guide.
If you suspect a problem with an interface module, carry out these steps before
contacting your supplier, technical support vendor, or 3Com:
Verify that all the LEDs on the module are functioning properly. If not, take
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notes of what you believe are abnormalities.
Ensure that the chassis is powered-up.
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Ensure that the module is correctly installed in the chassis.
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Ensure that devices at the other end of all links are powered-up and operating
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correctly.
Verify that all connectors on modules and all attached devices are correctly
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engaged with the proper cabling.
If you are using a fiber optic cable, clean the terminators by wiping them gently
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with a clean tissue or cotton bud that is moistened with a little ethanol. Dirty
fiber terminators impair the quality of the light that is transmitted through the
cable.
If a port is not operating, move its cabling to a different but functional port so
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that you can determine if there is a problem with the cabling.
If a module is not operating, remove it and install it in a different slot to see if
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that makes a difference.
Write detailed notes of the situation, including the order of events and who
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was involved. Have ready information about your network, including other
equipment, applications, and protocols in use.
If you suspect a problem with a Switch Fabric Management Module (SFMM), carry
out these steps before contacting your supplier, technical support vendor, or
3Com:
Under normal conditions when you install the SFMM, the status LEDs light to
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display the operating state. If the chassis is powered on, but the SFMM
Diagnostic LED does not light, the SFMM has failed its self-diagnostic process.
Verify that the SFMM is installed correctly by following the installation
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instructions in this chapter.

Troubleshooting Modules

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