If I had to guess, it sounds like you are missing the "system nve infra-vlans" on the Nexus 9200s, this is a requirement when using SVI uplinks.
You can found a bit more information about this command here:
When using SVI uplinks with VXLAN enabled on Cisco Nexus 9200 platform switches and Cisco Nexus 9300-EX platform switches, use the system nve infra-vlans command to specify the VLANs that are used for uplink SVI. Failing to specify the VLANs results in traffic loss.
I am trying to build a Spine Leaf lab topology. Does anyone happen to have a good guide I can refer too? I am kinda confused with certain things.
So far I am using the following:
OSPF - routing
ECMP - for load sharing
One question I have is are the VXLAN configs (VTEPs, VNI, etc) just entered on the leaves?
Can I simply swap out OSPF with EIGRP and is that really recommended if a Data Center is not planed to scale too large especially if Vmotion will not cross the WAN or something?