A link aggregation method and device

Abstract

The invention discloses a link aggregation method and device, comprising: aggregating N links respectively connecting a first network device and a plurality of second network devices into a cross-device link aggregation group; through the N links sending N detection packets to the plurality of second network devices, so that the plurality of second network devices respectively send first packets to the first network device through the N links, and receive the plurality of The N first packets sent by the second network device, each first packet includes the MAC address and port information of the second network device sending the first packet; according to the second packet in each first packet The MAC address and port information of the network device respectively aggregate the links between the first network device and each of the second network devices into a single-device link aggregation group. By adopting the embodiment of the present invention, the direct link and port occupation between network devices can be reduced, and the flow load balance between multiple network devices can be effectively realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a link aggregation method and device. Background technique [0002] Link aggregation includes inter-device link aggregation (English: multi-chassis link aggregation) and on-device link aggregation. Among them, inter-device link aggregation refers to connecting a downstream device (which can be a server) through a member port (English: constituent Ports) link aggregation group (English: Link AggregationGroup, abbreviation: LAG) terminated on different network devices is connected to a cluster system composed of multiple network devices, thereby increasing the network access bandwidth of downstream devices. Such as figure 1 As shown in the figure, it is a schematic diagram of a cross-device link aggregation network. Both device 1 and device 2 are member devices of the cluster system. Link 1 between the server and device 1 and link 2 between the server and device 2 f...

AI Technical Summary

Problems solved by technology

However, if Figure 3B As shown, if the data stream of device 1 needs to be forwarded to server 2 that is dual-homed to device 2 and device 3, device 1 can either forward the data stream through device 2 or forward the data stream through device 3, but The first link and the second link are independent and do not form an MC-LAG. Therefore, when device 1 sends data streams to server 2, the load balance between the first link and the second link cannot be guaranteed.

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