Checking the Cooling System Status ! 267
Chapter 19: Monitoring the Cooling System
Checking the Cooling System Status
For the cooling system to operate properly, the clearance around the chassis must
be sufficient for unobstructed airflow. For clearance and maintenance
requirements, see the appropriate router hardware guide.
Action To check the cooling system status, use the following JUNOS command-line
interface (CLI) operational mode command:
user@host> show chassis environment
Sample Output For M5 and M10 routers (see also Figure 105 on page 253):
user@host>
show chassis environment
Class Item Status Measurement
[...Output truncated...]
Fans Left Fan 1 OK Spinning at normal speed
Left Fan 2 OK Spinning at normal speed
Left Fan 3 OK Spinning at normal speed
Left Fan 4 OK Spinning at normal speed
Misc Craft Interface OK
For M7i routers (see also Figure 106 on page 253):
user@host>
show chassis environment
Class Item Status Measurement
[...Output truncated...]
Fans Fan 1 OK Spinning at normal speed
Fan 2 OK Spinning at normal speed
Fan 3 OK Spinning at normal speed
Fan 4 OK Spinning at normal speed
For M10i routers (see also Figure 107 on page 254):
user@host>
show chassis environment
Class Item Status Measurement
[...Output truncated...]
Fans Fan Tray 0 Fan 1 OK Spinning at normal speed
Fan Tray 0 Fan 2 OK Spinning at normal speed
Fan Tray 0 Fan 3 OK Spinning at normal speed
Fan Tray 0 Fan 4 OK Spinning at normal speed
Fan Tray 0 Fan 5 OK Spinning at normal speed
Fan Tray 0 Fan 6 OK Spinning at normal speed
Fan Tray 0 Fan 7 OK Spinning at normal speed
Fan Tray 0 Fan 8 OK Spinning at normal speed
Fan Tray 1 Fan 1 OK Spinning at normal speed
Fan Tray 1 Fan 2 OK Spinning at normal speed
Fan Tray 1 Fan 3 OK Spinning at normal speed
Fan Tray 1 Fan 4 OK Spinning at normal speed
Fan Tray 1 Fan 5 OK Spinning at normal speed
Fan Tray 1 Fan 6 OK Spinning at normal speed
Fan Tray 1 Fan 7 OK Spinning at normal speed
Fan Tray 1 Fan 8 OK Spinning at normal speed
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