static route

This might be a stupid question, but i am stuck !

i have 2 interfaces, ether1 and ether2 adn i want to route public IP from ether1 to ether2.

ether 2 is connected to router, having IP 1.2.3.1 — router 1.2.3.2
ether 1 has the public range, a.b.c.d,

how can i router a.b.c.d to the other interface ?

i have get gateway on mikrotik with the router ip 0.0.0.0 1.2.3.2

many thanks !

Not possible, only your ISP can do that.

the isp has already router the a.b.c.d range to 1.2.3.1

any help ??

Please post a picture showing your network diagram. At least to me your initial question is confusing in regards to layout, and a routing question is hard to answer without a clear layout

currenty mikrotik is setup as brigde, but i want to change this to router, so i have less bridge and more control on mikrotik !

So i want to move the IP on the router, to the Mikrotik customer interface. and put a /27 to connect router and mikrotik.
diagram.jpg

I guess that router in this network diagram belongs to your ISP, is that correct?

no, its ours, we have just added mikrotik as a firewall, but its in bridge mode, as we do not ned to do nat, its pure public IP.

You can remove the first router in the diagram and reconfigure MikroTik with the same IP configuration, or you can create a different network between router and MikroTik and route your public /27 network through MikroTik. It’s a simple task if you know how to reconfigure your router.