Hello,
I'm testing NSX-T in my lab with only TIer0 edge node and I have a confusion regarding the fp-nics:
- nic1 >> management.
- fp-eth0 >> connected to an overlay N-VDS, but I'm forced to select a vlan-backed portgroup from the ESXi host, from a VSS switch!!!, so, I'm confused about this, where should this interface lead and where should I exactly connect it, and what's the function of that interface?
- fp-eth1 and eth2 >> connected tl VLAN transport zone and I have no issues with them.
Regarding the confusion I have, fp-eth0 interface is now on the same vlan as the namagement nic, I gave it a static IP in that VLAN, and everything works fine, meaning, VMs on NSX-T can communicate with the physical world using BGP.
Again, what's the purpose of the interface(s) that connects to the overlay N-VDS, and why can't I choose a portgroup that already represents a segment (logical switch) on that N-VDS swich? 
All VMW guides are only focusing on multi-tier deployment, I need to test all scenarios, single tier, and multi tier.
Thanks,