You didn't specify if you are using openwrt and which version. I used wrt1900 and wrt3200 as router with one of the latest openwrt (not the one posted) and do p

You didn't specify if you are using openwrt and which version. I used wrt1900 and wrt3200 as router with one of the latest openwrt (not the one posted) and do precisely that, have each switch physical lan port on a separate interface and network range. It has been possible for quite a while, but the latest DSA changes to the linux kernel make the process much simpler. https://openwrt.org/docs/guide-user/network/dsa/dsa-mini-tutorial https://openwrt.org/docs/guide-user/network/dsa/dsa-mini-tut... https://www.kernel.org/doc/html/latest/networking/dsa/dsa.html https://www.kernel.org/doc/html/latest/networking/dsa/dsa.ht...