When running discover connections in Spectrum, if models are using a mix of LLDPv1 and LLDPv2, Spectrum will not create the connection automatically.
Release : 10.x
Component : Spectrum Discovery & Modeling
This is resolved in 10.4.1. This is also resolved in Bi Monthly Patch #1 for 10.3.2:
Symptom: Connections are not discovered between when different version of LLDP like LLDPv1 and LLDPv2 are neighbors.
Resolution: Spectrum is now enhanced to discover connections between different versions of LLDP neighbors.