JUNOS Internet Software Network Operations Guide: Hardware
540 ! Displaying Redundant Cooling System Components
For an M40 router (see also Figure 214 on page 529):
user@host>
show chassis environment
Class Item Status Measurement
[...Output truncated...]
Fans Top Impeller OK Spinning at normal speed
Bottom impeller OK Spinning at normal speed
Rear Left Fan OK Spinning at normal speed
Rear Center Fan OK Spinning at normal speed
Rear Right Fan OK Spinning at normal speed
Misc Craft Interface OK
For M40e and M160 routers (see also Figure 217 on page 531):
user@host>
show chassis environment
Class Item Status Measurement
[...Output truncated...]
Fans Rear Bottom Blower OK Spinning at normal speed
Rear Top Blower OK Spinning at normal speed
Front Top Blower OK Spinning at normal speed
Fan Tray Rear Left OK Spinning at normal speed
Fan Tray Rear Right OK Spinning at normal speed
Fan Tray Front Left OK Spinning at normal speed
Fan Tray Front Right OK Spinning at normal speed
Misc CIP OK
For an M320 router (see also Figure 219 on page 533):
user@host>
show chassis environment
Class Item Status Measurement
Fan Top Left Front fan OK Spinning at normal speed
Top Right Rear fan OK Spinning at normal speed
Top Right Front fan OK Spinning at normal speed
Top Left Rear fan OK Spinning at normal speed
Bottom Left Front fan OK Spinning at normal speed
Bottom Right Rear fan OK Spinning at normal speed
Bottom Right Front fan OK Spinning at normal speed
Bottom Left Rear fan OK Spinning at normal speed
Rear Fan 1 (TOP) OK Spinning at normal speed
Rear Fan 2 OK Spinning at normal speed
Rear Fan 3 OK Spinning at normal speed
Rear Fan 4 OK Spinning at normal speed
Rear Fan 5 OK Spinning at normal speed
Rear Fan 6 OK Spinning at normal speed
Rear Fan 7 (Bottom) OK Spinning at normal speed
For T320 routers and T640 routing nodes (see also Figure 221 on page 535,
Figure 222 on page 536, Figure 223 on page 537, and Figure 224 on page 538):
user@host>
show chassis environment
Class Item Status Measurement
Fans Top Left Front fan OK Spinning at normal speed
Top Left Middle fan OK Spinning at normal speed
Top Left Rear fan OK Spinning at normal speed
Top Right Front fan OK Spinning at normal speed
Top Right Middle fan OK Spinning at normal speed
Top Right Rear fan OK Spinning at normal speed
Bottom Left Front fan OK Spinning at normal speed
Bottom Left Middle fan OK Spinning at normal speed
Bottom Left Rear fan OK Spinning at normal speed
Bottom Right Front fan OK Spinning at normal speed
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