In this type of scenario, route marking must be carried out in order to use them in static routes and route traffic where required.

Static routing can be used in combination with route marking on MikroTik devices to direct them along different routes. This technique is a powerful way to manage traffic on your network, allowing you to control how and where data packets are sent.

We explain how you can implement routing-mark:

Step 1: Route Marking

First, you need to mark the packets that you want to follow a specific route. This is usually done in the chain forward of the firewall using mangrove. You can mark packets based on various criteria, such as source or destination IP addresses, ports, protocols, among others.

Command example to mark packets:

/ip firewall mangle add chain=forward src-address=192.168.1.0/24 action=mark-routing new-routing-mark=viaISP1

This command marks packets coming from the 192.168.1.0/24 network with a routing mark viaISP1.

Step 2: Creating Static Routes

Once packets are marked, you can create static routes that use these marks to define which gateway they should exit through. This is done in the menu IP > Routes.

Example command to add a static route based on a routing flag:

/ip route add dst-address=0.0.0.0/0 gateway=192.168.2.1 routing-mark=viaISP1

This command states that all packets marked with viaISP1 They will be routed to the gateway 192.168.2.1, which could be, for example, your ISP1 connection.

Considerations

• Route Precedence: Marked routes take precedence over unmarked routes. This means that marked packets will follow the specific route assigned before considering other possible routes.
• Multipath Routing: You can use this technique to implement policy-based routing (PBR) or multipath routing, where different types of traffic are routed through different paths, based on policies defined by the network administrator.
• Load Balancing and Failover: In addition to specifically directing traffic, packet marking and static routing can also be used for advanced load balancing and failover configurations between multiple Internet connections.

Using static routing with route marking in MikroTik RouterOS is a flexible and powerful strategy for advanced traffic management, allowing network administrators to optimize the performance and reliability of their networks.