Maintaining The Router Components; Maintaining The Fan Module - Juniper MX204 Hardware Manual
3d universal edge router
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Also See for MX204:
- Hardware manual (191 pages) ,
- Quick start manual (26 pages) ,
- Quick start manual (31 pages)
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CHAPTER 20
Maintaining the Router Components
Maintaining the MX204 Fan Module
Purpose
Action
Copyright © 2018, Juniper Networks, Inc.
Maintaining the MX204 Fan Module on page 115
Maintaining the MX204 Power Supplies on page 116
Maintaining the MX204 Routing Engine on page 117
For optimum cooling, verify the condition of the fans.
Monitor the status of the fans. A fan module contains multiple fans that work in unison
to cool the router components. If one fan fails, the router 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 a red alarm are triggered when a fan module is removed.
To display the status of the cooling system, issue the
command. The output is similar to the following:
user@host> show chassis environment
Class Item
Temp
CB 0 Top Right Inlet Sensor
CB 0 Top Left Inlet Sensor
CB 0 Top Right Exhaust Sensor
CB 0 Top Left Exhaust Sensor
CB 0 CPU Core-0 Temp
CB 0 CPU Core-1 Temp
CB 0 CPU Core-2 Temp
CB 0 CPU Core-3 Temp
CB 0 CPU Core-4 Temp
CB 0 CPU Core-5 Temp
CB 0 CPU Core-6 Temp
CB 0 CPU Core-7 Temp
FPC 0 EA0_HMC0 Logic die
FPC 0 EA0_HMC0 DRAM botm
FPC 0 EA0_HMC1 Logic die
FPC 0 EA0_HMC1 DRAM botm
FPC 0 EA0 Chip
FPC 0 EA0-XR0 Chip
FPC 0 EA0-XR1 Chip
Power PEM 0
PEM 1
Fans
Fan Tray 0 Fan 0
Fan Tray 0 Fan 1
show chassis environment
Status
Measurement
OK
35 degrees C / 95 degrees F
OK
38 degrees C / 100 degrees F
OK
45 degrees C / 113 degrees F
OK
64 degrees C / 147 degrees F
OK
49 degrees C / 120 degrees F
OK
49 degrees C / 120 degrees F
OK
48 degrees C / 118 degrees F
OK
49 degrees C / 120 degrees F
OK
49 degrees C / 120 degrees F
OK
48 degrees C / 118 degrees F
OK
48 degrees C / 118 degrees F
OK
48 degrees C / 118 degrees F
OK
81 degrees C / 177 degrees F
OK
78 degrees C / 172 degrees F
OK
85 degrees C / 185 degrees F
OK
82 degrees C / 179 degrees F
OK
93 degrees C / 199 degrees F
OK
69 degrees C / 156 degrees F
OK
73 degrees C / 163 degrees F
ok
OK
49 degrees C / 120 degrees F
OK
Spinning at normal speed
OK
Spinning at normal speed
115
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