Mikrotik failover

Question

Mikrotik

Hi all!

Tell me, is it possible and what technology stacks to smoke, if, as usual, you want something strange.

Now there is:
PC with 2 network cards under debian 7 with XEN.
managed switch
2 providers connected to the switch and via vlans going into one virtual router.

What you want:
buy RB951Ui-2HnD
Assemble into a ring:

In xen, run the second routerOS.

How to set it up so that:
- in normal mode, the iron Mikrotik picks up both providers and routes everything. (failover of the fall of one of the providers is practically a regular function, no questions)
- in the event of a break in any cable in the ring between the switch, router and xen, connectivity was maintained. STP? And what can be tweaked so that the links can be used simultaneously?
- in case of switch disconnection - of course, for Mikrotik it looks like provider 1 has fallen and everything is normal.
- in the event of a Mikrotik shutdown, its functions were intercepted by a virtual machine. And when the physical piece of iron was returned, control was returned to it. Will there be enough licenses on the virtual machine for this Free license? How to sync settings changes?

The verdict “maybe” and the direction of digging are enough for me.

PS: why do I need this - just for fun.

Answer 1

That's definitely not done. Throw out the switch, in such a scheme it is clearly superfluous, stick the second provider directly into the server, raise it between the router and the OSPF server and balance the traffic.