Maintaining The Fan Tray In Ex9200 Switches - Juniper EX9214 Hardware Manual

Related
Documentation

Maintaining the Fan Tray in EX9200 Switches

Purpose
Action
Copyright © 2015, Juniper Networks, Inc.
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
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
Temperature
Power 1
1.0 V
1.2 V
1.5 V
1.8 V
2.5 V
3.3 V
5.0 V
5.0 V RE
12.0 V
12.0 V RE
Power 2
4.6 V bias MidPlane
11.3 V bias PEM
11.3 V bias FPD
11.3 V bias POE 0
11.3 V bias POE 1
Bus Revision
FPGA Revision
PMBus Expected
device voltage
XF ASIC A 1000 mV
XF ASIC B 1000 mV
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.
Craft Interface in an EX9200 Switch on page 20
EX9204 Switch Hardware Overview
EX9208 Switch Hardware Overview
EX9214 Switch Hardware Overview on page 3
For optimum cooling, verify the condition of the fans.
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
command. The output is similar to the following:
user@switch> show chassis environment
show chassis environment cb
Online Master
30 degrees C / 86 degrees F
1002 mV
1218 mV
1475 mV
1827 mV
2526 mV
3338 mV
5053 mV
4969 mV
12220 mV
12123 mV
4840 mV
11176 mV
11292 mV
11272 mV
11311 mV
64
13
Measured Measured Calculated
voltage current power
997 mV 13609 mA
1000 mV 12484 mA
show chassis environment
Chapter 25: Routine Maintenance
13568 mW
12484 mW
239