How to connect 3 different routers

RouterOS Beginner Basics
1

Hi,

I need help to set up the inter-connection between 3 mikrotik routers. We have installed 3 routers in different sites : A, B, C. Between Router A and B it is possible to link the routers physically by ethernet cable, but site C is too far. Each router has their own internet connection as shown below.
I have tried setting up in 1 mikrotik in site B for dual WAN (ISP 1 and ISP 2) with pcc load balancing and failover, but somehow the ISP2 wont connect.

  • So currently I set each router with their own configuration, but now I want to configure the automatic failover in case their main ISP is down; which method should I use?
  • Another problem, I’d like to allow clients from site B and C to access the server in site A, which has a static local IP 192.168.3.251, how should I do that?

mikrotik setup.jpg
Many many thanks in advance for all your help
Regards,
Dee

2

For failover i wouldnt use PCC, if you have PPPoE tunnels with your ISPs then configure your distances correctly, like 1 and 2, then you should create some policy routing if your server should be accessible from public users…
In case no tunnels are used, then you should use recursive failover…

Also, the sites B and C can be connected through VPN, SSTP for example, so that the users on site C can access your server.