Juniper MX2010, Hardware Manual

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Figure 320: Air Baffle
Action
•
On a regular basis, check the air baffle and adjust accordingly to redirect exhaust air.
SEE ALSO
Tools and Parts Required for Replacing MX2010 Hardware Components | 430
MX2010 Cooling System Description | 45
Maintaining the MX2010 Fan Trays
Purpose
For optimum cooling, verify the condition of the fans.
Action
•
Monitor the status of the fans. The fan trays each contain multiple fans that work in unison to cool the
router components. If one fan fails, the host subsystem adjusts the speed of the remaining fans to
maintain proper cooling. A red alarm is triggered when a fan fails, and a yellow alarm is triggered when
a fan tray is removed. During normal operation, the fans in each fan tray function at normal speed.
•
To display the status of the cooling system, issue the show chassis environment command, show chassis
environment monitored command, show chassis temperature-thresholds command, or show chassis
fan command.
For the fan trays, the output for the show chassis environment command is similar to the following:
user@host>
show chassis environment
Class Item Status Measurement
Temp PSM 0 OK 31 degrees C / 87 degrees F
PSM 1 OK 28 degrees C / 82 degrees F
PSM 2 OK 28 degrees C / 82 degrees F
PSM 3 OK 26 degrees C / 78 degrees F
PSM 4 OK 28 degrees C / 82 degrees F
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