3Com SuperStack II Switch 9300, Getting Started Manual

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Diagnosing Problems 41
Table 9 Troubleshooting Abnormal Port LED Activity
LED Status Possible Sources of the Problem Steps to Take
Pckt LED does not light. Software error Check the Administration Console display.
Stat LED does not light. System does not recognize a
connection to the port.
■
Cable is not fully attached to the
port.
■
Port cable is faulty.
■
Fiber optic ports or connectors are
dirty.
1 Verify that all cables are firmly inserted into both the system’s affected
port and the attached device.
2 Test for faulty cables.
3 Clean the fiber optic ports and connectors. See next section.
When the problem is corrected, the LED lights green.
If the LED still does not light, contact your network supplier or 3Com
Technical Support.