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 .22.214.171.124.4.1.26126.96.36.199.1.8
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 :-
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.
KM article depicting the issue from Juniper:-
Link to Download latest DDPs for NNMi:-
*DDP -> Device Driver Packs