Juniper Networks E-Series Monitoring Temperatures of Modules, 10-9, State of the Line Module

Monitoring Temperatures of Modules

E-Series Routers

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

10-9

Diagnostic Signs	Possible Problems
None	•	System temperature is
		too high.
	•	Vents are blocked.
	• Fans are not operating.

Actions

1Check your console for a message indicating the problem. If you have the system log set to a severity of WARNING or higher, a Warning message indicating the failure is displayed.

2Issue the show environment command to display the temperatures. If the temperature is too high, power down the system.

3Regulate temperature.

4 Reset system.

Redundancy Status

You can determine the redundancy state of line modules by examining the online and redundant status LEDs (ERX-7xx/14xx models only). See Table 10-5.

Note: The REDUNDANT LED on the cOCx/STMx, FE-8, GE/FE, HSSI, and

OCx/STMx modules is nonfunctional.

Table 10-5Redundancy status of a line module

ONLINE LED	REDUNDANT LED	State of the Line Module
Off	Off	Module is booting or is an inactive primary line
		module.
On	Off	Module is active, but no standby module is
		available.
Off	On	Module is in standby state.
On	On	Module is active, and a standby module is
		available.

Monitoring Temperatures of Modules

You can view the temperature of each module by issuing the show environment all and show environment table commands. In addition, the system generates detailed log messages if the temperature of a module is outside normal operating limits.

If the temperature of any module exceeds the upper temperature limit, the system immediately goes into thermal protection mode. Once the system has entered thermal protection mode, you must resolve the cause of the high temperature.