Maintaining the MX480 Fan Tray
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 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 environmentClass Item Status Measurement Temp PEM 0 OK 40 degrees C / 104 degrees F PEM 1 OK 40 degrees C / 104 degrees F PEM 2 Absent PEM 3 Absent Routing Engine 0 OK 36 degrees C / 96 degrees F Routing Engine 0 CPU OK 32 degrees C / 89 degrees F Routing Engine 1 OK 35 degrees C / 95 degrees F Routing Engine 1 CPU OK 32 degrees C / 89 degrees F CB 0 Intake OK 33 degrees C / 91 degrees F CB 0 Exhaust A OK 32 degrees C / 89 degrees F CB 0 Exhaust B OK 36 degrees C / 96 degrees F CB 0 ACBC OK 35 degrees C / 95 degrees F CB 0 SF A OK 49 degrees C / 120 degrees F CB 0 SF B OK 43 degrees C / 109 degrees F CB 1 Intake OK 33 degrees C / 91 degrees F CB 1 Exhaust A OK 30 degrees C / 86 degrees F CB 1 Exhaust B OK 37 degrees C / 98 degrees F CB 1 ACBC OK 34 degrees C / 93 degrees F CB 1 SF A OK 46 degrees C / 114 degrees F CB 1 SF B OK 43 degrees C / 109 degrees F FPC 1 Intake OK 37 degrees C / 98 degrees F FPC 1 Exhaust A OK 32 degrees C / 89 degrees F FPC 1 Exhaust B OK 35 degrees C / 95 degrees F FPC 1 QX 0 TSen OK 50 degrees C / 122 degrees F FPC 1 QX 0 Chip OK 58 degrees C / 136 degrees F FPC 1 LU 0 TCAM TSen OK 50 degrees C / 122 degrees F FPC 1 LU 0 TCAM Chip OK 43 degrees C / 109 degrees F FPC 1 LU 0 TSen OK 50 degrees C / 122 degrees F FPC 1 LU 0 Chip OK 51 degrees C / 123 degrees F FPC 1 MQ 0 TSen OK 50 degrees C / 122 degrees F FPC 1 MQ 0 Chip OK 53 degrees C / 127 degrees F FPC 1 QX 1 TSen OK 48 degrees C / 118 degrees F FPC 1 QX 1 Chip OK 51 degrees C / 123 degrees F FPC 1 LU 1 TCAM TSen OK 48 degrees C / 118 degrees F FPC 1 LU 1 TCAM Chip OK 47 degrees C / 116 degrees F FPC 1 LU 1 TSen OK 48 degrees C / 118 degrees F FPC 1 LU 1 Chip OK 53 degrees C / 127 degrees F FPC 1 MQ 1 TSen OK 48 degrees C / 118 degrees F FPC 1 MQ 1 Chip OK 54 degrees C / 129 degrees F FPC 2 Intake OK 34 degrees C / 93 degrees F FPC 2 Exhaust A OK 38 degrees C / 100 degrees F FPC 2 Exhaust B OK 34 degrees C / 93 degrees F FPC 2 QX 0 TSen OK 47 degrees C / 116 degrees F FPC 2 QX 0 Chip OK 51 degrees C / 123 degrees F FPC 2 LU 0 TCAM TSen OK 47 degrees C / 116 degrees F FPC 2 LU 0 TCAM Chip OK 47 degrees C / 116 degrees F FPC 2 LU 0 TSen OK 47 degrees C / 116 degrees F FPC 2 LU 0 Chip OK 51 degrees C / 123 degrees F FPC 2 MQ 0 TSen OK 47 degrees C / 116 degrees F FPC 2 MQ 0 Chip OK 51 degrees C / 123 degrees F FPC 3 Intake OK 30 degrees C / 86 degrees F FPC 3 Exhaust A OK 39 degrees C / 102 degrees F FPC 3 Exhaust B OK 47 degrees C / 116 degrees F FPC 3 I3 0 TSensor OK 46 degrees C / 114 degrees F FPC 3 I3 0 Chip OK 51 degrees C / 123 degrees F FPC 3 I3 1 TSensor OK 43 degrees C / 109 degrees F FPC 3 I3 1 Chip OK 46 degrees C / 114 degrees F FPC 3 I3 2 TSensor OK 42 degrees C / 107 degrees F FPC 3 I3 2 Chip OK 45 degrees C / 113 degrees F FPC 3 I3 3 TSensor OK 40 degrees C / 104 degrees F FPC 3 I3 3 Chip OK 41 degrees C / 105 degrees F FPC 3 IA 0 TSensor OK 41 degrees C / 105 degrees F FPC 3 IA 0 Chip OK 40 degrees C / 104 degrees F FPC 3 IA 1 TSensor OK 41 degrees C / 105 degrees F FPC 3 IA 1 Chip OK 43 degrees C / 109 degrees F FPC 4 Intake OK 31 degrees C / 87 degrees F FPC 4 Exhaust A OK 38 degrees C / 100 degrees F FPC 4 Exhaust B OK 47 degrees C / 116 degrees F FPC 4 I3 0 TSensor OK 49 degrees C / 120 degrees F FPC 4 I3 0 Chip OK 53 degrees C / 127 degrees F FPC 4 I3 1 TSensor OK 48 degrees C / 118 degrees F FPC 4 I3 1 Chip OK 50 degrees C / 122 degrees F FPC 4 I3 2 TSensor OK 48 degrees C / 118 degrees F FPC 4 I3 2 Chip OK 51 degrees C / 123 degrees F FPC 4 I3 3 TSensor OK 44 degrees C / 111 degrees F FPC 4 I3 3 Chip OK 45 degrees C / 113 degrees F FPC 4 IA 0 TSensor OK 48 degrees C / 118 degrees F FPC 4 IA 0 Chip OK 42 degrees C / 107 degrees F FPC 4 IA 1 TSensor OK 47 degrees C / 116 degrees F FPC 4 IA 1 Chip OK 47 degrees C / 116 degrees F FPC 5 Intake OK 37 degrees C / 98 degrees F FPC 5 Exhaust A OK 45 degrees C / 113 degrees F FPC 5 Exhaust B OK 31 degrees C / 87 degrees F FPC 5 QX 0 TSen OK 54 degrees C / 129 degrees F FPC 5 QX 0 Chip OK 59 degrees C / 138 degrees F FPC 5 LU 0 TCAM TSen OK 54 degrees C / 129 degrees F FPC 5 LU 0 TCAM Chip OK 59 degrees C / 138 degrees F FPC 5 LU 0 TSen OK 54 degrees C / 129 degrees F FPC 5 LU 0 Chip OK 62 degrees C / 143 degrees F FPC 5 MQ 0 TSen OK 54 degrees C / 129 degrees F FPC 5 MQ 0 Chip OK 54 degrees C / 129 degrees F FPC 5 QX 1 TSen OK 48 degrees C / 118 degrees F FPC 5 QX 1 Chip OK 52 degrees C / 125 degrees F FPC 5 LU 1 TCAM TSen OK 48 degrees C / 118 degrees F FPC 5 LU 1 TCAM Chip OK 53 degrees C / 127 degrees F FPC 5 LU 1 TSen OK 48 degrees C / 118 degrees F FPC 5 LU 1 Chip OK 51 degrees C / 123 degrees F FPC 5 MQ 1 TSen OK 48 degrees C / 118 degrees F FPC 5 MQ 1 Chip OK 52 degrees C / 125 degrees F Fans Top Rear Fan OK Spinning at intermediate-speed Bottom Rear Fan OK Spinning at intermediate-speed Top Middle Fan OK Spinning at intermediate-speed Bottom Middle Fan OK Spinning at intermediate-speed Top Front Fan OK Spinning at intermediate-speed Bottom Front Fan OK Spinning at intermediate-speed
