Dual WAN with PPPoE - Best practice for routing and firewall

Hi Community,

I’ve got an small problem… maybe…

Iam not sure what is the best way with RouterOS for me. I think policy based routing is the best way…?

Situation:

VLAN100 172.16.0.0/24 internal/private
VLAN101 172.16.1.0/24 internal/private
VLAN102 172.16.2.0/24 internal/private
VLAN104 172.16.3.0/24 internal/private
VLAN104 172.16.4.0/24 guest-network

pppoe0 dial up the first internet connection for internal/private networks (no problem)
pppoe1 is to make the second internet connection for guest network

Both pppoe cennoctions use interface eth10

When only pppoe0 is online all networks can reach the public internet. after dialing the second ppoe connection the local networks lost the connection to the public internet. tracert 8.8.8.8 cant find the route to the public internet, the mikrotik router ist still online and can reach the internet.

After a few seconds the local networks can reach the internet for a few seconds while the router can do.

I think the best practice for me ist to define a route (policy based routing)?
172.16.0.0/22 → use interface pppoe0
172.16.4.0/24 → use interface pppoe1?

Do i think right?

After dial up two pppoe connetions i want to make a small setup for the firewall, but this later.

Nobody can help me?

Both PPPoE-cocnections have the same gateway.

How can i set up, that vlan104 traffic only use the pppoe-guest connection and all other networks use pppoe-company line?
routes-config.png
Thank you for your help.

Hi,
use Mangle to highlight the connection / packages and routing tables to transport the selected packages over the desired WAN.

Example:
Mangle.JPG
routing.JPG

Thank you very much for your help.
Can you please post the screens with the column names on the top. I can only guess what is meant.

THX

routing.JPG
Mangle.JPG

I’ll give a try. Tomorow.
You are from Germany too?

Yes I am from Germany.

Hi Melbar,

iam back on site and dont get the config working.

Can i contact you via personal mail?