Hi, i need to make a setup like this:

i have one mikrotik rb750 as main router with public ip address (server)

i have another 2 rb750s as clients with wan port connected to internet (4g).

what i need to achieve is to make devices A and B on the clients sites visible to each other as if they where in one switch with ip addresses from same subnet.

Am i right with EOIP option? can somebody help me with config?

Thanks, S.

Pretty much yeah. You should create GRE tunnel from site to site.

Hi.
I think, your 4G provider didn't gave you a static IP-address. In this case, I recommend you any client/server configuration (PPTP, SSTP, L2TP, OVPN) connecting to the main site. Over that connection, you can create an EOIP tunnel.

Regards: Xen