Hello!
I am a VoIP technician attempting to do a Dual WAN fail-over. I am not trying to load balance, but more so once the main connection is down, have the Mikrotik RB2011u roll over to the other WAN without a hitch. I am trying to figure out any marks or mangle rules needed, but for now I am just using the routes to manage the dual WAN. Any information on how to set this up correctly would be greatly appreciated. Thanks!
Well, just use routes than.
And, to monitor if link is UP, you can do it by creating some recursive routes and use those routes to create default routes with different distances and with CHECK GATEWAY enabled.
No need to do anything in mangle.
And will provide fail-over with constant pinging and monitoring if external connectivity is UP.
TIP: You can use DNS ROOT-SERVERS close to you to create those recursive routes.
You need mangle to be able to return incoming connections back via the right interface.
Well, for only failover, you need to use the check-gateway or Netwatch which they will disable the default route. Since the default route are static and not dynamic.
Now, to use both links between your devices, then you need to do a load balance or say to some IPs to use the secondary link through mangle rules.