Using RB2011LS to test WAN configs just for routing

Hi - I am totally new to the MikroTik family of routers - so I have very little experience on them.

I have a RB2011 which I would like to setup as follows…

Int ETH2 with IP a.b.c.d/30

Int ETH3 with IP e.f.g.h/30

Int ETH4 with IP i.j.k.l/30


I then plug into ETH2 another device which has an IP contained within the scope a.b.c.d/30. I can then PING from device plugged into ETH2 the ETH2 interface (effectively its Gateway).

Likewise, I do similar for ETH3 and ETH4.

How do I setup simple routing from device attached to ETH2 to the device plugged into ETH4 or ETH3.

Or from ETH3 to ETH2 or ETH4. I want to mimic the RB2011 in a similar way to the Cisco ISR 1841. The ISR 1841 only has 2 interfaces whereas the MikroTik has 10 useable interfaces.

Basic routing is all I need. Any ideas folks?

If the devices have default routes to 2011, the routing will work fine.