Policy Routing in RouterOS 3.x

Using mangle is not required for policy (aka static) routing with RouterOS 3.x. This is an example of routing between networks without using mangle.

The example network setup:

Assuming addresses are assigned to all interfaces as above, static routes must be added to tell router1 that the 192.168.22.0/24 subnet is accessible via router2 and to tell router2 that the 192.168.20.0/24 subnet is accessible through router1. On router1:

/ip route add dst-address=192.168.22.0/24 gateway=192.168.21.2 disabled=no
/ip route rule add dst-address=192.168.22.0/24 action=lookup table=main

on router2:

/ip route add dst-address=192.168.20.0/24 gateway=192.168.21.1 disabled=no
/ip route rule add dst-address=192.168.20.0/24 action=lookup table=main