Foundry MRP cohabit with STP

Hi, We are deploying a network using MRP of Foundry (Metro Ring Protocol of Brocade now) and STP (in this case Rapid Spanning Tree Protocol-802.1W). The problem is that in some networking segment, we must enable both of protocols in the same interfaces and vlans for the correct function of our network. By the way, as MRP and STP are 2 protocols of loop prevention, the devices of Brocade force us choosing and activating just one among them that not our intention. Anybody has the same situation of some experiences in this case: how to make coexist these two protocols. (MRP and STP). Best thanks, Viet Ton.