Juniper EX9208 - Maintaining the Fan Tray in EX9200 Switches

The output is of an EX9208 switch. The output is similar for all EX9200 switches.
To check the status of a specific Switch Fabric, issue the show chassis environment cb
command and include the slot number of the SF. The output is similar to the following:
user@switch> show chassis environment cb 0
CB 0 status:
State Online Master
Temperature 30 degrees C / 86 degrees F
Power 1
1.0 V 1002 mV
1.2 V 1218 mV
1.5 V 1475 mV
1.8 V 1827 mV
2.5 V 2526 mV
3.3 V 3338 mV
5.0 V 5053 mV
5.0 V RE 4969 mV
12.0 V 12220 mV
12.0 V RE 12123 mV
Power 2
4.6 V bias MidPlane 4840 mV
11.3 V bias PEM 11176 mV
11.3 V bias FPD 11292 mV
11.3 V bias POE 0 11272 mV
11.3 V bias POE 1 11311 mV
Bus Revision 64
FPGA Revision 13
PMBus Expected Measured Measured Calculated
device voltage voltage current power
XF ASIC A 1000 mV 997 mV 13609 mA 13568 mW
XF ASIC B 1000 mV 1000 mV 12484 mA 12484 mW
The output is of an EX9208 switch. The output is similar for all EX9200 switches.
For more information about using the CLI, see the Junos OS documentation.
Related
Documentation
Craft Interface in an EX9200 Switch on page 19•
• EX9204 Switch Hardware Overview
• EX9208 Switch Hardware Overview on page 3
• EX9214 Switch Hardware Overview
Maintaining the Fan Tray in EX9200 Switches
Purpose For optimum cooling, verify the condition of the fans.
Action Monitor the status of the fans. A fan tray contains multiple fans that work in unison to
cool the switch components. If one fan fails, the host subsystem adjusts the speed of
•
the remaining fans to maintain proper cooling. A major alarm is triggered when a fan
fails and a minor alarm and a major alarm are triggered when a fan tray is removed.
• To display the status of the cooling system, issue the show chassis environment
command. The output is similar to the following:
user@switch> show chassis environment
277Copyright © 2017, Juniper Networks, Inc.
Chapter 26: Routine Maintenance