Redundant backup system and method for all-IP subway vehicle-mounted communication device

The invention relates to a redundant backup system and method for a full-IP subway vehicle-mounted communication device, and the system comprises a first switching board, a second switching board, a first control board, a second control board, and a plurality of business boards. The first switching board and the second switching board are respectively connected with the first control board, the second control board and the service boards in a star topology mode, the first switching board and the second switching board are cascaded, and the first control board and the second control board are backups for each other and jointly control the plurality of service boards. Compared with the prior art, the method has the advantages of being high in reliability, good in adaptability, high in flexibility, excellent in performance, good in expansibility and the like. 本发明涉及一种用于全IP化地铁车载通信装置的冗余备份系统及方法，其中冗余备份系统包括第一交换板、第二交换板、第一控制板、第二控制板和若干个业务板，第一交换板和第二交换板通过星形拓扑方式分别与第一控制板、第二控制板和业务板相连，第一交换板和第二交换板级联，第一控制和第二控制互为备份，共同控制控制若干个业务板。与