Method and equipment for link aggregation

Abstract

The invention provides a method and equipment for link aggregation. The method comprises the following steps of: closing data frame transceiving functions of all ports; when a timer of a transmit machine is up to time, selecting an aggregation group for the ports by a selection logic machine, setting a timer of a Mux machine and starting timing, and preparing for adding the ports to the aggregation group by the Mux machine; and when the timers of the Mux machine and the transmit machine are up to time at the same time, adding the ports to the aggregation group by the Mux machine, and opening the data frame transceiving functions of the ports by the Mux machine according to the aggregation state information in the received LACPDU message to perform transmission of application message. The method and the equipment for the link aggregation ensure that the data frame transceiving functions are simultaneously opened by reasonably setting the time length of the timer of each machine, reduce the loss of the application message, and improve the reliability of the aggregation link transmission application message by closing the data frame transceiving functions in time when the aggregation link is abnormal.

Description

technical field [0001] The present invention relates to the field of network communication, in particular to a link aggregation method and equipment. Background technique [0002] Link Aggregation Control Protocol (Link Aggregation Control Protocol, LACP) is a protocol to achieve dynamic link aggregation. LACP aggregates one or more links together to form a link aggregation group (TRUNK), so that media access The control (MAC) application layer can treat the link aggregation group as a single link. After a link is added to a link aggregation group, application packets can be transmitted only after the data frame sending and receiving functions of the ports at both ends of the aggregation link in the link aggregation group are enabled, otherwise, the application packets will be lost . [0003] There are six state machines in LACP: Receive machine, Periodic Transmission machine, Selection Logic machine, Mux machine, Transmit machine ) and the Churn Detection machine. Usual...

AI Technical Summary

Problems solved by technology

Therefore, if the timer of the sending state machine has not expired, the port status information of the local port cannot be notified to the peer port in time, so that the data frame sending and receiving functions cannot be enabled at the same time, and it is easy to cause the loss of application messages.

[0008] However, the durations of the respective timers of the above four state machines with timers are not clearly given in LACP, and the relationship between them is uncertain. Currently, in the process of link aggregation control using LACP, each timing The timer duration is set by using the experience value or by the user; when the user sets the timer, often due to unreasonable settings, the state information of the port at one end of the aggregation link cannot be notified to the other end in time, causing the data frame The sending and receiving functions cannot be turned on at the same time, resulting in the loss of application messages during transmission

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