CHAPTER 28
Maintaining Components
•
Maintaining the M7i Cooling System on page 191
•
Maintaining the M7i Routing Engine on page 192
•
Maintaining the M7i FIC and FIC Cables and PICs and PIC Cables on page 192
•
Maintaining the M7i Power Supplies on page 194
•
Maintaining the M7i CFEB and CFEB-E on page 195
Maintaining the M7i Cooling System
Purpose For optimum cooling, verify the condition of the fans.
Action The router has a single fan tray that installs into the back of the chassis, as shown in
Figure 6 on page 12.
To check the status of the fans in the fan tray, issue the show chassis environment
command. The output includes an entry for each fan in the fan tray:
user@host> show chassis environment
Class Item Status Measurement
Power Power Supply 0 OK
Power Supply 1 OK
Temp Intake OK 24 degrees C / 75 degrees F
PICs OK 27 degrees C / 80 degrees F
Power Supplies OK 27 degrees C / 80 degrees F
CFEB Intake OK 27 degrees C / 80 degrees F
CFEB Exhaust OK 33 degrees C / 91 degrees F
Routing Engine OK 26 degrees C / 78 degrees F
Fans Left Fan Tray Present
Left Tray front fan OK Spinning at normal speed
Left Tray second fan OK Spinning at normal speed
Left Tray third fan OK Spinning at normal speed
Left Tray fourth fan OK Spinning at normal speed
For further description of the output from the command, see the CLI Explorer.
Related
Documentation
M7i Cooling System Overview on page 15•
• Replacing the M7i Fan Tray on page 137
191Copyright © 2019, Juniper Networks, Inc.
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