We get routing information from NSX controller for NSX logical switches but for Non-NSX PGs, physical switches must be added as data sources in vRNI,
Once you add supported physical switch to vRNI, it will start showing the path.Karthic Kumar,
Sr.MTS. vRealize Network Insight.
Hi npavlov -
I had this problem as well and it was resolved when I added the physical routers and switches to vRNI. Go to Settings --> Add Source, and add the router/switch in for discovery.