Is it possible on mikrotik crs125 to organize subnet load distribution between the processor and the switch chip, and if so, how best to do it?

Question

Mikrotik

There is a crs125 Mikrotik, as far as we know, it has a switch chip that can unload the percent, you need to make 2 subnets for video surveillance and so that the processing of the traffic of this subnet is not handled by the processor, but by the same chip.

Answer 1

Select the ports you need, output them from the bridge.
Create vlan on switch chip.
You will have two vlans, those are essentially two broadcast domains.
Naturally, routing between networks will already go at the CPU level.