@MakisFil 

Omada routers are NAT devices ie 'gateways', not true routers.

The answer to your question is no unless you are using an Omada smartswitch, but I think you are asking your question the wrong way.

What you can do, is define your local network(s) such that some IPs or subnets get forced OUT a specific WAN port (Policy Routes) and inbound requests to one of your router can be port forwarded (or DMZ'd) to a specific host(s) on your LAN side.  In short you should be able to achieve what you want, just in a different way.

Hi @MakisFil 

Thanks for posting in our business forum.

I would appreciate it if you could make a complete title instead of this.

About your question, if you want to do something like that, you should first at least set up the VLAN on the ER605. If you want to separate the network in LAN, that's VLAN.

Next up, you need to route specifically to a different WAN on ER605 if you have one, you need to use Policy Routing.

But if you are talking about the one WAN on ER605 but three routers on the ER605 VLANs, you should not bother setting this. It does not make sense because it is just how a simple network works.