Monitoring Temperatures Of Modules - Juniper ERX-1410 Installation And User Manual

8-10 CHAPTER 8
Troubleshooting

Monitoring Temperatures of Modules

Table 8-6 Troubleshooting high-temperature conditions
Cause of High Operating
Temperature
Air vents to system are blocked
Ambient temperature exceeds
specifications
Cooling fan failure
Module failure
Table 8-5 Redundancy status of a line module
ONLINE LED REDUNDANT LED State of the Line Module
Off Off
On Off
Off On
On On
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.
Symptoms
Space around system does not meet
specifications (see
System Specifications).
Ambient temperature exceeds
specifications (see
System Specifications).
• FAN OK LED on SRP module is
not illuminated.
• FAN FAIL LED on SRP module is
illuminated.
FAIL LED on module is illuminated.
When you have resolved the cause of the high temperature, you must
power cycle the system to reset the modules.
Module is booting or is an inactive primary line
module.
Module is active, but no standby module is
available.
Module is in standby state.
Module is active, and a standby module is
available.
Resolution
Increase space around system.
Appendix A,
Provide extra cooling or heating in
Appendix A, the room where the system is
located.
Replace fan tray (see
Maintaining the ERX
Replace module (see
Installing ERX
Chapter 7,
System).
Chapter 3,
Modules).