[ceph-users] network ring recommendations wanted

Dear listers, for cluster network i have currently 3x Mikrotik switches CRS518-16XS-2XQ (connected via 100 GBit) and for the "public" connection to clients via 2x10 GBit  i have 5x Mikrotik switches CRS326-24S+2Q+RM (connected via 40 GBit) available. Looking at the hardware to me it seems there is only oen option to build network rings. MLAG seems to be supported only for up to two devices (not enough for me), RSTP seems unsupported. I read about people using MSTP (which is supported) but i'm unsure if it is suitable for ceph needs. I'm not talking about a high performance setup here, rather than file server and virtualization needs. Any thoughts/comments? Best regards, Kai