I ran into the same issue as described by Eric Sloof:
The problem I had was i did not have enough uplinks to create a new dvSwitch to get the tunnel to work. For the tunnel to work, the geneve traffic has to leave the host and get routed back in. I had a layer 3 physical switch and decided to make use of inter-vlan routing.
Once logged into the switch:
- Enable ip routing
- Create an SVI(Switch Virtual Interface) for each vlan
console(config)#interface vlan 50 console(config)#ip address 184.108.40.206 255.255.255.0 console(config)#interface vlan 60 console(config)#ip address 10.1.1.1 255.255.255.0
- You can further restrict ip routes using ACLs
Login to NSX-T
- System->Fabric->Profiles->Uplink Profiles: Ensure the correct transport vlan is configured for the overlay uplink profile and the edge overlay uplink profile. In my case, vlan 50 and vlan 60.
- Networking->Ip Address Pools->Add/Edit overlay TEP ip address pool->Subnets-> Ensure the gateway is specified. In my case 220.127.116.11
- Networking->Ip Address Pools->Add/Edit Edge TEP ip address pool->Subnets-> Ensure the gateway is specified. In my case 10.1.1.1
- System->Fabric->Nodes->Edge Trasnport Nodes->Edit/Add Edge->Ensure the correct transport zone and the Edge TEP ip pool is selected.
Edit: This blog explains TEP ip addressing perfectly, https://spillthensxt.com/nsx-t-tep-ip-addressing/