Maintaining the MX2020 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 Absent
PSM 1 Absent
PSM 2 Absent
PSM 3 Absent
PSM 4 OK 34 degrees C / 93 degrees F
PSM 5 OK 31 degrees C / 87 degrees F
PSM 6 OK 30 degrees C / 86 degrees F
PSM 7 OK 30 degrees C / 86 degrees F
PSM 8 OK 31 degrees C / 87 degrees F
PSM 9 Absent
PSM 10 Absent
PSM 11 Absent
PSM 12 Absent
PSM 13 OK 32 degrees C / 89 degrees F
PSM 14 OK 31 degrees C / 87 degrees F
PSM 15 OK 30 degrees C / 86 degrees F
PSM 16 OK 30 degrees C / 86 degrees F
PSM 17 OK 30 degrees C / 86 degrees F
PDM 0 OK
PDM 1 OK
PDM 2 OK
PDM 3 OK
CB 0 IntakeA-Zone0 OK 25 degrees C / 77 degrees F
CB 0 IntakeB-Zone1 OK 29 degrees C / 84 degrees F
442
To Next Page
Loading...
Need help?
General
