How to configure Mikrotik for two providers, one PPPoE and the second PPTP?

Question

Mikrotik

Given: Two providers, the first (main) with PPPoE, the second (backup) with PPTP connection.
According to the instructions , I set up the router, adjusted for the PPPoE of the first provider. The main channel is working correctly. From the second channel via DHCP, I get IP and DNS. How to add PPTP to it now?

Answer 1

Something like this - https://habr.com/post/313342/ . The 2xEthernet and 2xPPPoE options work this way. I don't think that it won't take off with PPtP :)
In general, in the simplest version, you can simply put 2 default routes with different metrics and if the link falls off, the second one will work. True, if not the link falls off, but the "external Internet" from the provider - this option will not work.

Answer 2

In general, you need to determine the gateway IP address and routes that are issued by the provider's dhcp server. The easiest way to do this is on a windows PC connected directly to the provider's network. Then add a dhcp client in Mikrotik by specifying the Add Default Route=no parameter and specify in the routes what should be issued by the dhcp server, specifying the IP address as the gateway, not the interface. Make sure that the pptp server address matches the added routes, if not, add a route to the pptp server, also specifying the IP address received via dhcp as the gateway.