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[Junos] How to monitor Routing Engine's CPU Load Averages using SNMP



Article ID: KB23726 KB Last Updated: 26 Dec 2019Version: 2.0

This article shows which MIB OIDs to use for monitoring CPU Load Averages in 1, 5, and/or 15 minute timespans.

Since Junos 11.3 release, a new set of MIBs were introduced to track the Routing Engine's CPU Load Averages for 1, 5, and 15 minute timespans. The relevant MIBs are listed under the jnxOperatingEntry tree:
jnxOperating1MinLoadAvg. (.
jnxOperating5MinLoadAvg. (.
jnxOperating15MinLoadAvg. (.
Run the following command to see these MIBs in the CLI on a SRX:
root@srx> show snmp mib walk jnxOperatingEntry | match LoadAvg.
jnxOperating1MinLoadAvg. = 18
jnxOperating5MinLoadAvg. = 12
jnxOperating15MinLoadAvg. = 8
 The suffix index corresponds to the Routing Engine:
root@srx> show snmp mib walk jnxOperatingEntry | match OperatingDescr.
jnxOperatingDescr. = Routing Engine
If this is a Chassis Cluster/HA environment, then there will be a separate suffix ( for the Routing Engine in node1:
jnxOperatingDescr. = node0 Routing Engine
jnxOperatingDescr. = node1 Routing Engine
The values from these MIBs correspond to the Load averages reported in the "show chassis routing-engine" command in the CLI:

root@Juniper> show chassis routing-engine
Routing Engine status:
    Temperature                 52 degrees C / 125 degrees F
    Total memory              1024 MB Max   625 MB used ( 61 percent)
      Control plane memory     560 MB Max   459 MB used ( 82 percent)
      Data plane memory        464 MB Max   162 MB used ( 35 percent)
    CPU utilization:
      User                       4 percent
      Background                 0 percent
      Kernel                     9 percent
      Interrupt                  0 percent
      Idle                      86 percent
    Model                          RE-SRX100H
    Serial ID                      
    Start time                     2012-04-25 15:27:25 UTC
    Uptime                         23 hours, 44 minutes, 13 seconds
    Last reboot reason             Router rebooted after a normal shutdown.
    Load averages:                 1 minute   5 minute  15 minute
                                       0.06       0.06       0.06

For more information about the jnxOperatingEntry and other MIB objects available for Junos devices, please see use the SNMP MIB Explorer here:

Modification History:
2019-12-26: Updated MIB explorer related link.

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