Troubleshooting The Cooling System On The Srx3400 Services Gateway - Juniper SRX3400 Hardware Manual

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Troubleshooting the Cooling System on the SRX3400 Services Gateway

Copyright © 2017, Juniper Networks, Inc.
Table 35: Backup Routing Engine Alarms (continued)
Chassis
Component Alarm Condition
FRU Offline The backup Routing Engine
has stopped communicating
with the master Routing
Engine.
Hard Disk Error in reading or writing hard
disk on the backup Routing
Engine.
Multibit Memory The backup Routing Engine
reports a multibit ECC error.
ECC
SRX3400 Services Gateway Switch Fabric Board on page 7
SRX3600 Services Gateway Switch Fabric Board
The services gateway cooling system consists of a fan tray and an air filter, both of which
are located vertically in the rear of the chassis. The fan tray contains four fans. The fan
tray provides cooling to the components installed in the services gateway.
An air filter installed in the rear of the chassis helps keep dust and other particles from
entering the cooling system. To function properly, the entire cooling system requires an
unobstructed airflow and proper clearance around the site, as described in
Preparation Checklist for the SRX3400 Services Gateway" on page
During normal operation, the fans in the fan tray function at less than full speed. The
Routing Engine constantly monitors the temperatures detected by sensors and services
gateway components, adjusting the speed of the fans as necessary. If the services gateway
temperature exceeds the acceptable maximum, the Routing Engine turns off the power
supplies. The following conditions automatically cause the fans to run at full speed and
also trigger the indicated alarm:
Chapter 25: Troubleshooting Components
Remedy
Open a support case using
the Case Manager link at
http:/ /www.juniper.net/support/
or call 1-888-314-5822 (toll
free, US & Canada) or
1-408-745-9500 (from
outside the United States).
Reformat hard disk and
install bootable image. If this
fails, replace failed backup
Routing Engine.
Reboot the system with
the board reset button on
the backup Routing
Engine.
If the alarm recurs, open a
support case using the
Case Manager link at
http:/ /www.juniper.net/support/
or call 1-888-314-5822
(toll free, US & Canada) or
1-408-745-9500 (from
outside the United
States).
"Site
54.
Alarm
Severity
Yellow
Yellow
Yellow
157