Device for realizing data transmission and breaking ring of Ethernet in application of channel ring formation

The invention relates to a device for realizing data transmission and breaking ring of Ethernet in application of channel ring formation. The device is characterized in that a first output/input end of a conversion module from a user-defined route data frame to a fixed rate channel is correspondingly connected to a first output/input end of a conversion module frame group data frame synthesis to the transmission channel; a second output/input end of a conversion module from two group data frames synthesis to the transmission channel is correspondingly connected to the first output/input end ofthe conversion module from an Ethernet data to the fixed rate channel. The invention has the advantages that when the device is used, the software disconnects the Ethernet transmission on a certain node via a user-defined route protocol after detecting the ring formation of Ethernet network and prohibits to be sent to the sending port, thereby realizing the function of breaking ring. Under the condition of not using TCP/