Two ESXi transport nodes in the same overlay transport zone host permitting VMs on one segment. How do those hosts interact to exchange overlay frames?
Select an answer to reveal the explanation.
Short Explanation
Each prepared host has a tunnel endpoint, like a civic mail chute. Same-segment VMs on different hosts talk Geneve from VTEP to VTEP on the underlay. They do not need Horizon or a firewall hairpin for that hop.
Full Explanation
When two ESXi transport nodes share an overlay transport zone, overlay frames between VMs on different hosts are encapsulated in Geneve and sent VTEP-to-VTEP across the underlay. That is the host-to-host overlay interaction. Unencapsulated flooding of every VLAN, Horizon Client, and a hardware hairpin are not how NSX-T overlay switching works between those hosts.