I have several CRS317 as edge switches between some locations, all ports are bridged with vlan filtering on, main router has many vlan on a single bridge for inter vlan comunication.
Everything seems to work but now i need some redundancy in links, in past I had luck with rstp. I tried to enable MSTP or RSTP on all bridges on CRS317 trying to lower priority on root bridge but every switch only see 0x0.00:00:00:00:00:00 as root bridge instead of the MAC of the root bridge I choose. I don't need different paths for different vlan, just backup links if some switch fall down. Do you have any suggestions for that?