Three-Rings Redundancy Industrial Ethernet Based on RSTP

The paper design a new three-rings Redundancy Industrial Ethernet system for the settlement of Industrial Intelligent based on rapid spanning tree protocol, according to the requirements of as reliability and real-time performance in the control data transmission of the three layers Frame Industrial Ethernet, analyse the method of solving the loop, apply the rapid spanning tree protocol and the multi-spanning tree to the system, so as to resolve the situation that the existence of loop in the switched networks led to the emergence of broadcast storm, resulting the failure of MAC address in an exchange network. At last, the result of the network test indicated that this system was a really reliable network system, which can be used in the modern industry control field that had a pivotal requirement in the system reliability and network management.