Hello
I will explain the topology I am building, and I want know what is the right way to do it.
I have 3 internet sources (routers) connected to switch then to a port of mikrotik.
and I have many PPPOE clients connected to another port of the mikrotik which has pppoe server enabled
so I have mikrotik with two port,
one connected to the switch + internet sources
second with PPPOE is connected to switch that has many PPPOE clients

I want to choose each PPPoe client, and through which router it reaches the internet ..

what should I do exactly ? I am really lost