How to select one of two gateways

RouterOS Beginner Basics
1

Hi there,

I have this scenario

ether1: wan
ether2: wan
ether3: lan

both ether1 and ether2 are in dhcp client mode and can reach internet.
Using traceroute I want to select ether1 or ether2 as interface to reach internet?
How can I do this? Do I have to set cost on routes or do I have to manage the “default route distance” in dhcp client advanced options?

2

State your requirements more clearly…
Hint. A one line is not sufficient.