I am having is that the NPM Topology isn’t working correcty with our Dell N3000 series switches and our legacy Dell Force 10 S50v:
Good example:

Based on this article https://support.solarwinds.com/Success_Center/Network_Performance_Monitor_(NPM)/Topology_related_OIDs_polled_by_the_Orion_Platform?CMPSource=THW&CMP=ORGANIC it mentions using the OIDs for LLDP That are used for discovery:

View from command on switch:

snmpwalk:

As you can see the information is missing/incomplete from NPM
I also notice that the MIB browser from the node detail shows:

Obviously the new mapping feature is pretty useless, we have multiple sites with these 2 types of switches. What can be done to resolve this?