Redundancy Status; Monitoring Temperatures Of Modules - Juniper E Series Hardware Manual

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 14.
NOTE: The REDUNDANT LED on the cOCx/STMx, FE-8, GE/FE, HSSI, and
OCx/STMx modules is nonfunctional.
Table 14: Redundancy Status of a Line Module

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.
For example, if the temperature of any forwarding controller exceeds 100° C, a
message appears on the console and the event is added to the system log. If you
receive this message, report it to your customer service representative.
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.
Table 15: Troubleshooting High-Temperature Conditions
Cause of High Operating
Temperature
Air vents to system are blocked
Ambient temperature exceeds
specifications
ONLINE LED
Off
On
Off
On
Symptoms
Space around system does not
meet specifications (see "System
Specifications" on page 113).
Ambient temperature exceeds
specifications (see "System
Specifications" on page 113).
REDUNDANT LED
Off
Off
On
On
Resolution
Increase space around system.
Provide extra cooling or heating in the
room where the system is located.
Monitoring Temperatures of Modules
Troubleshooting
State of the Line Module
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.
109