Juniper M Series User Manual

Checking the Cooling System Status
Purpose 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 operational mode command:
user@host> show chassis environment
Sample Output
For M5 and M10 routers (see also “M5 and M10 Router Cooling Systems” on page 320):
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 “M7i Router Cooling System” on page 320):
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 “M10i Router Cooling System” on page 321):
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
For an M20 router (see also “M20 Router Cooling System” on page 321):
user@host> show chassis environment
Class Item Status Measurement
339Copyright © 2012, Juniper Networks, Inc.
Chapter 11: Monitoring the Cooling System

Juniper M Series Specifications

General

Brand	Juniper
Model	M Series
Category	Network Router
Language	English