The invention discloses a data transmission method, network equipment and a device. The data transmission method comprises the following steps of: receiving data processed by a switch chip by a data transmission path in a data transmission device through a plurality of first logic interfaces corresponding to a first data transmission rate; confirming whether to discard the received data accordingto a second data transmission rate when the total data transmission rate of the plurality of first logic interfaces is larger than the second data transmission rate corresponding to second logic interface which is contained in the data transmission path and used for transmitting data to the peer data transmission device, wherein the second data transmission rate is larger than the first data transmission rate; and keeping the data to a transmission data buffer after the data are confirmed not to be discarded and transmitting the data in the transmission data buffer to the peer data transmission device through the second logic interface when the data in the transmission data buffer meet the transmission condition. The technical scheme can be adopted to improve the data transmission efficiency.