FIELD: physics, computer engineering.
SUBSTANCE: invention discloses a link aggregation method and device. The method includes turning off data frame transmitting-receiving functions of all ports; when a timer of a transmit machine expires, a selection logic machine selects a TRUNK for a port, a timer of a multiplexing machine is set and started, and the multiplexing machine prepares to add the port to the selected TRUNK; and when the timer of the multiplexing machine and the timer of the transmit machine expire simultaneously, the multiplexing machine adds the port to the selected TRUNK, turns on the data frame transmitting-receiving function of the port according to aggregation state information in a received LACPDU message, and performs application message transmission.
EFFECT: simultaneous turning-on of the data frame transmitting-receiving function by properly setting the timer duration of each state machine, thereby reducing application message loss; in case a breakdown occurs in an aggregated link, when no link aggregation control protocol data unit (LACPDU) message is received from the opposite side, the data frame transmitting-receiving function is turned off timely, increasing reliability of application message transmission by the aggregated link.
10 cl, 6 dwg
