Message processing method and device

Abstract

The embodiment of the invention provides a message processing method and device, and the method comprises the steps: obtaining the triple information of a to-be-forwarded message, and carrying out the first Hash operation based on the triple information, and obtaining a first Hash operation result; obtaining port number information of the message to be forwarded, wherein the port number information comprises a source port number and a destination port number, and carrying out second Hash operation based on the port number information to obtain a second Hash operation result; determining a message type of the to-be-forwarded message, wherein the message type comprises a fragmented message and a non-fragmented message; if the to-be-forwarded message is a fragmented message, determining a first forwarding link based on the first hash operation result; and if the to-be-forwarded message is a non-fragmented message, performing a third hash operation based on the first hash operation result and the second hash operation result to obtain a third hash operation result, and determining a second forwarding link based on the third hash operation result. On the premise that the utilization rate of the bandwidth of the switch is high, the Hash path consistency of the fragmented message can be guaranteed.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a message processing method and device. Background technique [0002] Hash is usually transliterated into hash, and can also be translated into hash, which is to convert fixed or arbitrary length input into fixed length output through hash algorithm, and the output is hash value. [0003] In the field of data communication, network devices usually support hash algorithms, which can be used to implement load sharing for data packets. [0004] The specific process is: when there are multiple forwarding links, the switch chip obtains the five-tuple of the message as the hash key, that is, the hash key. The five-tuple includes source ip address source ip, destination ip address destination ip, protocol number ipprotocol, The l4 layer source port number l4srcport and the l4 layer destination port number l4 destination port are hashed according to the five-tuple, ...

AI Technical Summary

Problems solved by technology

[0006] However, the current mainstream switch chip does not involve the judgment of whether the packet is fragmented in the hash operation logic. For the fragmented non-first packet, since the position of the four-layer port number is actually the data field, if the five-tuple is selected When used as a hash key, the data field will be mistakenly used as the l4 port to participate in the calculation of the hash value. This will cause multiple fragmented messages of the same message to be forwarded through different links and reach different servers. business operation

[0007] Therefore, the hash key can only be set as the triplet source ip, destination ip, and ipprotocol of the packet, but this will lead to uneven load sharing of the packet and waste the bandwidth of the switch

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