How to route multiple networks on Mikrotik?

Question

network hardware

There is a task - to route several networks among themselves. The networks are “internal”, respectively, I will not have a WAN port as such, respectively, I need routing, not NAT. There is no need to filter traffic, all ports should work.
The task is quite simple theoretically, static routing is enough, i.e. A PC with several interfaces and Linux will do just fine, but I want a separate “iron” solution, from an inexpensive one with a sufficient number of ports, the choice fell on RouterBoard.
I looked at examples, wikis, and panicked a little. Share an example of a config with routing (doesn't matter, static, RIP, OSPF) between multiple networks and without using a firewall.

Answer 1

Yes, everything is simple there. You just add several local subnets (192.168.1.0/24, 192.168.2.0/24, etc.) to the list of IP addresses (IP-> Addresses), while specifying ether2-master-local for all. And that's it, the networks will "see" each other.

Answer 2

If everything is in one l2 space (one switch, without VLAN or several stupid switches without VLAN), then Andrey's advice is higher (lower).
If there is a VLAN or you want to differentiate traffic / make your own DHCP for each network - then each port of the Mikrotik has its own address - and to your switch (to your network segment), or on one port, add a VLAN and each VLAN has its own address and each VLAN - this is its own segment of the network.
Everything else will really work by itself (and at a speed close to wired). Enjoy.