It is not necessary to configure another QoS on the new Mikrotik router that you are adding to your network, the traffic of the new LAN network segments that are on the new router can be managed by the CCR that is already configured with QoS and is the Primary Administrator .

When connecting a new MikroTik router with additional LAN networks to a CCR (Cloud Core Router) device that already has Quality of Service (QoS) configured, the decision of whether you need to configure QoS additionally on the new router depends on several factors related to your network design and specific traffic and prioritization requirements.

We present some points to consider:

Use CCR QoS

• Centralization of Traffic Control: If the CCR is the central point through which all your network traffic flows, keeping QoS settings centralized in the CCR can simplify management. This allows you to have a single point of management and adjustment for QoS policies.
• Sufficiency of Current QoS Configuration: If the current QoS configuration on the CCR is sufficient to handle and prioritize traffic coming from the new LANs appropriately, then it may not be necessary to configure additional QoS on the new MikroTik router. This would be applicable if QoS policies are broadly defined and do not require specific granularity for new traffic.

Configure QoS on the New MikroTik Router

• Specific LAN Traffic Requirements: If new LANs have unique traffic requirements or need specific prioritization that is not covered in the CCR QoS configuration, configuring additional QoS on the new router may be necessary. This allows LAN traffic to be treated appropriately before it reaches the CCR.
• Decongestion and Efficiency: Configuring QoS on the new MikroTik router can also help handle traffic efficiently within the LANs themselves, ensuring that critical services are appropriately prioritized before competing for bandwidth on the broader link to the CCR. and beyond.

General considerations

• Complexity vs. Control: Configuring QoS on multiple devices increases network complexity but offers more granular control over traffic. You need to evaluate the balance between the additional complexity and the level of control required.
• Maintenance and Scalability: Consider how adding QoS configurations at multiple points in the network will impact the long-term maintenance and scalability of your network infrastructure.

In conclusion

The decision of whether to configure another QoS on the new MikroTik router depends on the specific traffic and prioritization needs of your new LANs, as well as the configuration and capacity of the existing CCR.

A best practice is to start with a detailed assessment of your QoS needs and adjust settings on both devices as necessary to ensure optimal network performance.