Maintaining The Fan Tray In Ex9253 Switches - Juniper EX9253 Hardware Manual

Maintaining the Fan Tray in EX9253 Switches

IN THIS SECTION
Purpose | 114
Action | 114
Purpose
For optimum cooling, verify the condition of the fans.
Action
• 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 speed of the remaining fans is adjusted 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 show chassis environment command.
user@switch> show chassis environment
Class Item
Temp CB 0 Exhaust Temp Sensor
CB 0 Inlet Temp Sensor
CB 0 CPU DIE Temp Sensor
FPC 0 Intake Temp Sensor
FPC 0 Exhaust-A Temp Sensor
FPC 0 Exhaust-B Temp Sensor
FPC 0 EA0 Chip
FPC 0 EA0-XR0 Chip
FPC 0 EA0-XR1 Chip
FPC 0 EA1 Chip
FPC 0 EA1-XR0 Chip
FPC 0 EA1-XR1 Chip
FPC 0 EA2 Chip
FPC 0 EA2-XR0 Chip
FPC 0 EA2-XR1 Chip
FPC 0 PF Chip
Status Measurement
OK 41 degrees C / 105 degrees F
OK 37 degrees C / 98 degrees F
OK 54 degrees C / 129 degrees F
OK 44 degrees C / 111 degrees F
OK 51 degrees C / 123 degrees F
OK 47 degrees C / 116 degrees F
OK 68 degrees C / 154 degrees F
OK 79 degrees C / 174 degrees F
OK 83 degrees C / 181 degrees F
OK 77 degrees C / 170 degrees F
OK 82 degrees C / 179 degrees F
OK 86 degrees C / 186 degrees F
OK 62 degrees C / 143 degrees F
OK 74 degrees C / 165 degrees F
OK 74 degrees C / 165 degrees F
OK 63 degrees C / 145 degrees F
114