Action
•
Monitor the status of the fans. A fan tray contains 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 and red alarm is 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@host> show chassis environment
Class Item Status Measurement
Temp PEM 0 OK 40 degrees C / 104 degrees F
PEM 1 Absent
PEM 2 Absent
PEM 3 OK 40 degrees C / 104 degrees F
Routing Engine 0 OK 39 degrees C / 102 degrees F
Routing Engine 1 OK 42 degrees C / 107 degrees F
CB 0 Intake OK 26 degrees C / 78 degrees F
CB 0 Exhaust A OK 27 degrees C / 80 degrees F
CB 0 Exhaust B OK 27 degrees C / 80 degrees F
CB 0 ACBC OK 26 degrees C / 78 degrees F
CB 0 SF A OK 37 degrees C / 98 degrees F
CB 0 SF B OK 35 degrees C / 95 degrees F
CB 1 Intake OK 27 degrees C / 80 degrees F
CB 1 Exhaust A OK 30 degrees C / 86 degrees F
CB 1 Exhaust B OK 28 degrees C / 82 degrees F
CB 1 ACBC OK 27 degrees C / 80 degrees F
CB 1 SF A OK 36 degrees C / 96 degrees F
CB 1 SF B OK 36 degrees C / 96 degrees F
CB 2 Intake Absent
CB 2 Exhaust A Absent
CB 2 Exhaust B Absent
CB 2 ACBC Absent
CB 2 SF A Absent
CB 2 SF B Absent
FPC 2 Intake OK 22 degrees C / 71 degrees F
FPC 2 Exhaust A OK 27 degrees C / 80 degrees F
FPC 2 Exhaust B OK 33 degrees C / 91 degrees F
FPC 2 I3 0 TSensor OK 33 degrees C / 91 degrees F
FPC 2 I3 0 Chip OK 35 degrees C / 95 degrees F
FPC 2 I3 1 TSensor OK 33 degrees C / 91 degrees F
FPC 2 I3 1 Chip OK 33 degrees C / 91 degrees F
FPC 2 I3 2 TSensor OK 33 degrees C / 91 degrees F
593
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