Rear Top Tray Fan 7 OK Spinning at high speed
Rear Top Tray Fan 8 OK Spinning at high speed
Rear Bottom Tray Fan 1 OK Spinning at high speed
Rear Bottom Tray Fan 2 OK Spinning at high speed
Rear Bottom Tray Fan 3 OK Spinning at high speed
Rear Bottom Tray Fan 4 OK Spinning at high speed
Rear Bottom Tray Fan 5 OK Spinning at high speed
Rear Bottom Tray Fan 6 OK Spinning at high speed
Rear Bottom Tray Fan 7 OK Spinning at high speed
Rear Bottom Tray Fan 8 OK Spinning at high speed
NOTE:
The fan numbers are stamped into the fan tray sheet metal next to
each fan.
Related
Documentation
M120 Cooling System Description on page 32
•
•
Replacing an M120 Fan Tray on page 134
•
Troubleshooting the M120 Cooling System on page 120
Maintaining the M120 Host Subsystem
Purpose
For optimum router performance, verify the condition of the host subsystem. The host
subsystem comprises a Routing Engine installed directly into a CB.
Action
On a regular basis:
•
Check the LEDs on the craft interface to view information about the status of the
Routing Engines. For more information about the LEDs and the display, see “M120 Craft
Interface Description” on page 23.
•
Check the LEDs on the CB faceplate to see information about them.
•
Check the LEDs on the Routing Engine faceplate to see information about them.
•
To check the status of the Routing Engines, issue the
show chassis routing-engine
command. The output is similar to the following:
user@host>
show chassis routing-engine routing engine status
Routing Engine status:
Slot 0:
Current state Master
Election priority Master (default)
Temperature 56 degrees C / 132 degrees F
CPU temperature 63 degrees C / 145 degrees F
DRAM 3584 MB
Memory utilization 12 percent
CPU utilization:
User 0 percent
Background 0 percent
Kernel 6 percent
Interrupt 0 percent
Copyright © 2010, Juniper Networks, Inc.
104
M120 Multiservice Edge Router Hardware Guide
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