3Com 9400 manual Diagnosing Problems, LED Status Possible Sources of the Problem Steps to Take

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.	Check the Administration Console display.
	■ Cable problem.
	■ No data being transmitted or
	received.
	■ Port is disabled
	■ Port is off-line.
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.

■Cable is not fully attached to the port. 2 If a GBIC port is affected, verify that the transceiver is properly seated.

■ Port cable is faulty.	Re-seat the GBIC. If the transceiver is properly seated, try another
	transceiver.
■ Device attached to port is not
	3 Test for faulty cables.
powered on.
	4 Clean the fiber optic ports and connectors. See next section.
■ Fiber optic ports or connectors are
dirty.	When the problem is corrected, the LED lights green.
■ If a GBIC port is affected, the	If the LED still does not light, contact your network supplier or 3Com
transceiver may not be properly	Technical Support.
seated or is defective.