Cloud Router Issue

Hi
Good day

We have two Mikrotik cloud routers model No.CRS212 and we want to configure loopback on both and then use traffic generator to generate traffic which passes through both and comes back. Please suggest the method.
We configure VLAN and master port in the same router but none of the ports pass full traffic and we have at least 950MB which must be 1G.
Please let us know what the problem/solution can be in two above cases.



Best regards
S.A.Alavian