This configuration cannot be performed if it is the same wireless card.

However, in a MikroTik access point (AP) it is possible to configure two different frequencies using CAPsMAN (Controlled Access Point system Manager, which is MikroTik's centralized access point management system) if there are two or more different wireless cards. This allows you to manage multiple APs from a single controller, including configuring different frequency bands, such as 2.4 GHz and 5 GHz, on the same device.

We explain how to do it:

1. CAPsMAN Configuration

First, you need to make sure CAPsMAN is properly configured on your MikroTik. This involves enabling CAPsMAN on a MikroTik that will act as the central controller:

/caps-man manager set enabled=yes
/caps-man manager interface add name=bridge1

2. Channel Configuration

Then, you configure the channels for each of the frequencies. You can create a channel for 2.4 GHz and another for 5 GHz:

/caps-man channel
add name="channel-2G" band=2ghz-b/g/n frequency=2412 width=20
add name="channel-5G" band=5ghz-a/n/ac frequency=5180 width=20

3. CAP Interfaces Configuration

Next, you must configure the CAP interfaces that the established channels will use. If you have dual radios on your AP, you can configure one for each band:

/caps-man datapath
add name="datapath1" bridge=bridge1

/caps-man configuration
add name="cfg-2G" mode=ap ssid="MikroTik-2G" channel="channel-2G" datapath="datapath1"
add name="cfg-5G" mode=ap ssid="MikroTik-5G" channel="channel-5G" datapath="datapath1"

4. Apply Configuration to Interfaces

Finally, apply these settings to the AP's physical interfaces:

/caps-man provisioning
add action=create-dynamic-enabled master-configuration="cfg-2G" slave-configuration="cfg-5G" hw-supported-modes=gn,an

5. Verification and Monitoring

Once configured, you can check the status of the CAPs and their configurations in CAPsMAN to ensure that both APs are working correctly on their respective bands. Use the monitoring and diagnostic commands in CAPsMAN to observe performance and any potential problems.

With these steps, you can have a MikroTik AP operating simultaneously on the 2.4 GHz and 5 GHz bands under CAPsMAN management, which is ideal for environments where you need to support a wide range of devices and ensure robust and efficient coverage.