I'm trying to set up a RouterBoard right now, but I don't think this question is specific to RouterBoard.
I have 4 ports all of which need to be on a certain subnet, we will say 192.168.2.0/24. However, one of the four ports must carry this plus another bit of traffic.
This RouterBoard does not allow me to do a "switch group" unfortunately, and that was my first thought. Adding these ports to a "switch group" would cause all traffic to be passed to each port, as if it were a switch, as demonstrated in these two images:
My other thought was to create a VLAN to facilitate this. Unfortunately I cannot use a VLAN because as noted before, one port needs to carry two distinct subnets, thus ruling out the possibility of configuring all the ports as access ports to a VLAN.
I am out of ideas, other than assigning each port a distinct IP on the subnet, which seems very messy and not at all eloquent...
Does anyone have any ideas of how I would be best to configure this?