How to set up a second channel on Mikrotik?

Question

Mikrotik

The essence of the question is this: there is a Mikrotik router with one Ethernet port and 5 LAN ports. There are two wires from one provider, one regular main one with filtering. It is necessary to somehow connect both wires to the Mikrotik, since the filtering must be on the same subnet, everything else works as before. Is it possible? And if so, how?

Answer 1

It's possible (to set up 2 providers), but it's impossible to simply suggest how this is done on the forum.
For example , here is an article
And so google "mikrotik 2 providers"
And 2 more providers are connected for different purposes, for balancing or redundancy, you can also google the one you need.

Answer 2

Mikrotiks do not have Ethernet and LAN ports, all ports are equal.
Better specify the teak model and what exactly needs to be done, 2 different subnets or one subnet and 2 gateways?