Inter-domain multicast routing.

The or data packet's method and system for pass-along message, (21) transmitted from the single transmitting the information or a data packet to each (i.e. a group of receiver, the transmission method of called multi-path transmission generally; Transmission range of a single-channel in transmission network, i.e., wherein a substantially is not claims a method and device for multi-path transmission of flexible the network, the network (22-24) is composed of multiple sub-networks. The connection is equal to the network node or the gateway (25-29) and multi-path transmission receiving the )or the lower receiving station's group) routing table, and each information's first) is defined the equal associated permanent address's multi-path transmission receiving station's the information of set.