3Com 3C94024 Getting Started Guide - Page 39

Table 9, LED Status, Possible Sources of the Problem, Steps to Take, Diagnosing Problems

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Diagnosing Problems 39 Table 9 Troubleshooting Abnormal Port LED Activity LED Status Possible Sources of the Problem Steps to Take Pckt LED does not light. System is not processing any packets. s Cable problem. s No data being transmitted or received. s Port is disabled s Port is off-line. Check the Administration Console display. Stat LED does not light. System does not recognize a connection 1 Verify that all cables are firmly plugged into both the system's affected to the port. port and the attached device. s Cable is not fully attached to the port. 2 If a GBIC port is affected, verify that the transceiver is properly seated. s Port cable is faulty. s Device attached to port is not powered on. Re-seat the GBIC. If the transceiver is properly seated, try another transceiver. 3 Test for faulty cables. s Fiber optic ports or connectors are 4 Clean the fiber optic ports and connectors. See next section. dirty. When the problem is corrected, the LED lights green. s If a GBIC port is affected, the transceiver may not be properly seated or is defective. If the LED still does not light, contact your network supplier or 3Com Technical Support.

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Diagnosing Problems
39
Table 9
Troubleshooting Abnormal Port
LED Activity
LED Status
Possible Sources of the Problem
Steps to Take
Pckt
LED does not light.
System is not processing any packets.
■
Cable problem.
■
No data being transmitted or
received.
■
Port is disabled
■
Port is off-line.
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.
■
Device attached to port is not
powered on.
■
Fiber optic ports or connectors are
dirty.
■
If a GBIC port is affected, the
transceiver may not be properly
seated or is defective.
1
Verify that all cables are firmly plugged into both the system’s affected
port and the attached device.
2
If a GBIC port is affected, verify that the transceiver is properly seated.
Re-seat the GBIC. If the transceiver is properly seated, try another
transceiver.
3
Test for faulty cables.
4
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.