Load Balancing and DNS servers?

So I’m pretty new at this but I think I’ve got a somewhat good idea of whats going on. Anyways, I’m subscribed to 2 static cable internet lines and I’m trying to figure out what to do about having 2 sets of dns servers to work with. I’ve got the modems set up using load balancing and I’m not sure which dns servers im supposed to use in the primary and secondary /ip dns fields. Also am I supposed to have the same dns servers listed under the /ip dhcp server network category? Sorry if these are noob questions, but like I said im new at this. Im using winbox v3.11 on a RB333. Thanks in advance.

I would recommend you use the primary server for both ISPs, however if you’re expecting to have fallover on your two links you might want to add a static route for each DNS server.

Eg:
Primary dns: 1.1.1.1
Secondary dns: 2.2.2.2

add route gateway=isp1 dst-address=1.1.1.1
add route gateway=isp2 dst-address=2.2.2.2

This way you’ll be able to get dns resolutions even if one of the links is offline.