If you get an SNMPwalk on these devices do that match the same thing you are seeing on the Cisco devices?
Did some additional digging and looks like only the Cisco Viptela SD-WAN devices use AES128 Priv as that is all that is supported. I verified that Username/Auth/Priv combo successfully in NTM but I setup a second user for that configuration, NTM scan sees the device and adds to the map, but does not show any connections to the upstream equipment.
I tried an SNMPWalk from the NTM server, but it seems like it just runs forever so I am assuming I am doing it incorrectly. Need to learn about how to do that now, I suppose.
we are using SNMP v3, SHA1, AES128
vEDGE Device can be added and monitored via "Manage Nodes" and it's showing Interface utilization
From NTM server a snmmpwalk is working fine. (tested with Solarwinds and 3rd party snmpwalk)
But when trying to add SNMP v3 credential in NTM the "Test Credential" doesn't work.
From my pov this is the root cause for not being able to discover vEDGE devices with NTM.
Seems that something is messed up in NTM when trying to use snmpv3. At least with SHA1, AES128