Summary
Question
In Network Node Manager (NNMi) after the installation of the July-2017 DDP it will be observed that NNMi no longer polls for the metric cpu1min & cpu5min. Furthermore, this behaviour extends to all DDPs starting the July 2017 release.
Currently to check CPU utilization using the Juniper Networks enterprise chassis MIB, the following OID is being polled :-
jnxOperatingCPU (OID - or .1.3.6.1.4.1.2636.3.1.13.1.8
Answer
To counter the known issue reported in the following Change Request, the Device Driver Packs (DDP) release starting July-17 are designed to update the CPU monitoring policy for Juniper devices to poll only jnxOperatingCPU metrics and disable polling of the CPU LoadAvg metrics.
Reference to the change request:-
So currently to check the CPU utilization as a percentage, 'jnxOperatingCPU' metrics is polled :-
jnxOperatingCPU 1.3.6.1.4.1.2636.3.1.13.1.8
jnxOperating1MinLoadAvg .1.3.6.1.4.1.2636.3.1.13.1.20
jnxOperating5MinLoadAvg .1.3.6.1.4.1.2636.3.1.13.1.21
jnxOperating15MinLoadAvg .1.3.6.1.4.1.2636.3.1.13.1.22
This change will extend to NNMi versions 10.1x , 10.2x & 10.3x.
If the user intends to monitor CPU Average Load then Custom Poller can be engaged to poll for the CPU LoadAvg OIDs as mentioned above.
Reference -
KM article depicting the issue from Juniper:-
https://kb.juniper.net/InfoCenter/index?page=content&id=KB31764
Link to Download latest DDPs for NNMi:-
https://marketplace.microfocus.com/itom/content/device-driver-packs-for-nnmi
*DDP -> Device Driver Packs