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 11.
• 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
Idle 93 percent
Model RE-A-2000
Serial ID 1000642871
Start time 2006-08-29 10:06:11 PDT
Uptime 57 minutes, 49 seconds
Load averages: 1 minute 5 minute 15 minute
0.00 0.03 0.00
Routing Engine status:
Slot 1:
Current state Backup
Election priority Backup (default)
Temperature 45 degrees C / 113 degrees F
CPU temperature 52 degrees C / 125 degrees F
DRAM 3584 MB
Memory utilization 10 percent
CPU utilization:
User 0 percent
Background 0 percent
Kernel 0 percent
Interrupt 0 percent
Idle 100 percent
Model RE-A-2000
Serial ID 1000636825
Copyright © 2018, Juniper Networks, Inc.266
M120 Multiservice Edge Router Hardware Guide
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