Yes, it is possible to use a MikroTik router to do load balancing and failover with at least two Internet lines. MikroTik routers are quite versatile and powerful, offering extensive configuration capabilities that allow users to tailor their network to various specific needs, including load balancing and failover.

Load balancing allows you to distribute your network traffic between two or more Internet lines to optimize bandwidth utilization, improve access speed for users, and increase redundancy. Failover, on the other hand, ensures that if one of your Internet lines fails, traffic will automatically be redirected to another available line, thus minimizing downtime and keeping your Internet connection stable.

To configure both load balancing and failover on a MikroTik router, you can use scripting and mangle rules in the firewall to mark packets and routes in the routing table. It is also possible to use various functionalities such as PCC (Per-Connection Classifier) ​​for load balancing and specific routing configurations for failover.

These are the basic steps to configure load balancing and failover on a MikroTik router:

Identify WAN interfaces

First, you must identify the interfaces that will be connected to your Internet lines.

Configure IP addresses

Make sure each Internet line has an IP address assigned to the corresponding interface on the router.

Create mangrove rules

This allows you to mark packets so that they can be treated differently depending on their origin or destination.

Configure routes and routing tables

You will need to configure routes on your MikroTik router to define how marked packets will be handled, including specific routes for failover.

Tests and adjustments

It is crucial to test your configuration to ensure that load balancing and failover are working as expected. You may need to make adjustments based on the actual behavior of your network.

While these steps provide a general overview, specific settings may vary depending on your exact needs and the model of MikroTik router you are using.

It is recommended to consult the official MikroTik documentation and, if necessary, seek the assistance of a professional to ensure that the configuration is done correctly and safely.