Identifying reverse path forwarding information

The invention claims a method, device and data structure and computer with are connected to the computer-readable medium, mechanism and device for equal, for improving and using a data structure shape (2); the data structure is used in aggregate of multiple address mark of between nodes in opposite forwarding information (RPF). A data structure comprises a mark multiple teeth communicating with teeth node for matching address sides (212, 213 and 214) address search data structure (250). Multiple teeth nodes (212, 213 and 214) comprises a corresponding to the rotor data structure (260) opposite manner forwarding connected (RPF) ring of the back of forwarding information (RPF). With the middle accessibility node (211) blade node each specific device comprises the opposite manner forwarding information (RPF) and a specific connected ring of the special stator structure for data in network. The middle accessibility node (211) can be or can not to different intranet (200 and 210) gateway node. The middle accessibility node (211) is generally node in network nodes and a communicating the current capacity between flowing traversal.