Oi Vey! You whipped that up so quick @jgjimenezs 
Yes the second picture would be accurate…two switches (stacked) and workstations, laptops, printers, VM Hosts connected to the switches. We use Proxmox as our Hypervisor (clustered with 4 severs) so I’ll be running Nethserver on Proxmox as a VM to deliver a Domain, DHCP and DNS to our network of virtual machines and physical hardware (printers, laptops, thin clients).
I’ve been reading up on this tutorial (albeit using Nethserver 6) but it had two NICS on Nethserver which threw me off as I thought I only needed one.
Thank you,