I need to assign external dynamic IP address from my ISP on one of my ethernet ports in my router.
Today all ports are configured to be behind NAT (local IP’s). What changes do I need to do to achieve this?
You have to remove that one ethernet port from any bridge or switching (master-port) and then configure that ether to their type of connection, i.e. DHCP, PPPoE.
This is one way to do what I think you want. You would adjust your source NAT to have out-interface be the bridge.
An alternative would be to perform 1:1 NAT between a public IP and an internal IP.
Thanks for your fast replies guys, but i’m to much of a noob to understand 
In interfaces i can see that i have a bridge named bridge.
The port i would like to set the external IP to has the name ether11.
My ISP gives me the external IP:S automatically from their DHCP-server.
My internal NAT = 192.168.10.0 /24. Local DHCP-server range for NAT = 192.168.10.2-192.168.10.254
ether1 = my port that are connected direct to my ISP and have the external IP-address.
I tried to change Master Port on ether11 from ether2-master to ether1, but that diden’t work, my device on connected to ether11 didn’t receive a external IP-address.
Anyone who can point me in the right direction on a verry noob’ish way 
dkz, no worries. Which model do you have? An easy way to get everything to working would be to remove the special switch interfaces from the picture. To explain a little, RouterOS has Ethernet interfaces and certain models have chips capable of switching packets at a high rate of speed. This is done under the umbrella of the switch interface. While this is good it can be fairly confusing to new users. What makes this worse is it only really increases the speed of packets forwarded within a VLAN. In other words it only accelerates traffic between say 2 PCs on the local network. Any traffic that would escape a VLAN will still be process switched, handled by the CPU.
I’m still looking for some clarification. You want port ether11 to have an external IP. Do you mean you have a device plugged like a server plugged into that port and that device needs the public IP?
The router I have is a Cloud Router Switch (RouterOS) model CRS125-24G-1S-2HnD. Yes, I have a IP TV-box from my ISP that needs to be connected direct to them with their IP address on my port ether11. It doesn’t work behind NAT according them.
Anyone wha can help me, i cant see IP-TV in my livingroom… 