I have also not yet found the Info why
2 NIC's are reccomended.
I suppose it is because you can then let the internet router stay as it is (using DHCP) and the MD's get their DHCP from the Core. But are there other reasons ?
I would like to only have one network in my house, so I don't see the reason for the Core having two network cards. If it did I would connect the outside network card to the Internet router and everything else to the internal switch.
With one network I would connect everything to the Internet router/switch and disable the DHCP server in the router. I am familiar with DHCP, PXE boot and TCP/IP so I am sure I can get along with that kind of system.
With one networkcard I would get a Virtual ETH0:1 where DHCP is running, right ?
Thanks for any feedback