Routing networks through different WAN links on Mikrotik

Question

Computer networks

Given:
- 3 subnets (office machines, server machines and guest);
- two links from the provider (with one gateway).
- Mikrotik 1100AHx2 It is
necessary to start server machines through one link, and all the rest through another. Once I found a solution to this problem through marking, but I did not save the link. Now I can't remember.
Who can faced a similar task?

Answer 1

Faced. On Habré, every article is the second about it!

Answer 2

Lots of options. Starting from marking traffic through the mangle, ending with the organization of pbr through route rules.
In fact, there are really a lot of articles on this topic on Habré, namely on dividing different clients into different uplinks