I tried adding my NSX-T Manager to librenms, but unfortunately not much shows up. It appears that the VMware MIBs are a bit outdated.
librenms/mibs/vmware at master · librenms/librenms (github.com)
→ Dated from a few years back, and no trace of VMWARE-NSX-MIB.mib
The latest version is 7.11, available here (lower right): VMware Knowledge Base
I don’t really know if something else must be done afterwards in librenms to use this new MIB?
Thanks and kind regards,