JUNOS Internet Software Network Operations Guide: Hardware
62 ! Using the Basic Monitoring Method
Routing Engine Error in reading or writing
compact flash.
Reformat the compact flash
and install a bootable
image. If this fails, replace
the failed Routing Engine.
Yellow
System booted from hard
disk.
Install a bootable image on
the compact flash. If this
fails, replace failed Routing
Engine.
Yellow
Compact flash is missing in
boot list.
Replace the failed Routing
Engine.
Red
Hard disk is missing in boot
list.
Replace the failed Routing
Engine.
Red
Power supplies A power supply was removed
from the chassis.
Install the missing power
supply.
Yellow
A power supply failed. Replace the failed power
supply.
Red
Temperature The chassis temperature
exceeded 55 degrees, the
fans were turned on to full
speed, and one or more fans
failed.
! Check the room
temperature.
! Check the air filter and
replace it.
! Check the air flow.
! Check the fan.
Yellow
The chassis temperature
exceeded 65 degrees C and
the fans turned on to full
speed.
! Check the room
temperature.
! Check the air filter and
replace it.
! Check the air flow.
! Check the fan.
Yellow
The chassis temperature
exceeded 65 degrees C and a
fan has failed. If this
condition persists for more
than 4 minutes, the router
shuts down.
! Check the room
temperature.
! Check the air filter and
replace it.
! Check the air flow.
! Check the fan.
Red
The chassis temperature
exceeded 75 degrees C. If
this condition persists for
more than 4 minutes, the
router shuts down.
! Check the room
temperature.
! Check the air filter and
replace it.
! Check the air flow.
! Check the fan.
Red
The temperature sensor
failed.
For technical support, open
a support case using the
Case Manager link at
http://www.juniper.net
/support/
or call
1-888-314-JTAC (within the
United States) or
1-408-745-9500 (outside
the United States).
Red
Chassis
Component
Alarm Condition Remedy
Alarm
Severity
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