Juniper Networks E-Series manual Slot slotnumber command

10-8CHAPTER 10 Troubleshooting

Table 10-4Troubleshooting abnormal LED activity on modules (continued)

Diagnostic Signs	Possible Problems		Actions
FAIL LED lights	•	The line module and I/O	1	Check that the line and I/O modules are compatible;
		module are incompatible.		replace if necessary.
	• A hardware failure, such		2	If you replaced the I/O module only, issue the reload
		as a failed module.		slot slot_number command.
			3	If you replaced the line module or if there was a
				hardware failure, the system should automatically
				reset the module.
			4	If condition persists, contact Juniper Networks
				Customer Service.
• FAN OK does not light	•	Fan is not working	Contact Juniper Networks Customer Service; the system
		properly or has slowed	must be serviced.
		down.
• FAN FAIL LED lights	•	Fan needs replacement.
LINK LED is not lit	•	Ethernet connection is	1	Check that Ethernet cables are properly connected to
		down.		both the Ethernet port and the appropriate network
				device.
			2	Contact Juniper Networks Customer Service.
RED ALM	•	System does not	1	Check that all cables are firmly plugged into the ports
		recognize a port		and the attached network device.
		connection.	2	Verify that cables are clean.
	• Cabling is not connected
			3	Test for faulty cables.
		properly.	4	Verify clock source and configuration.
	•	Cable is faulty.
			5	Reset system.
	•	Clocking problem exists.
			Note: Problem is corrected when normal LED activity is

observed.

YEL ALM

Note: This LED is not functional on the HSSI line module.

•Far end receive failure (FERF) exists.

1Correct FERF problem.

2 Reset system.

Note: Problem is corrected when normal LED activity is observed.

•	System will not boot.	A slot group is overloaded.	1	Issue the show version command to display board
•	Module(s) held offline.			status.
			2	Review section on proper slot group configuration in
•	FAIL LED lights.
				Chapter 5, Installing Modules.
			3	Reconfigure system with correct slot group
				configuration.
			4	Reset system.