Flow control method, device and system

Abstract

The invention discloses a flow control method, device and system. The method comprises the steps of analyzing input messages in a current time domain, and obtaining a length value of each input message; reading cache message information about a memory in an internal register; obtaining an input total flow value according to each input message length value and the cache message information; if theinput total flow value is smaller than a preset flow threshold register value, judging whether a message is stored in a memory or not, if the message is stored in the memory, taking out the stored message, outputting the stored message and subsequent input flow to a server together, and meanwhile, updating a message reading initial address and a pre-read first message length value in cache messageinformation; and if the flow value is greater than or equal to the flow valve register value, storing the subsequent input flow into a memory, and meanwhile, updating a message storage ending addressin the cached message information. The method, device and system have the beneficial effects that servers and complex operations do not need to be added, and the integrity of the messages is kept bysacrificing the timeliness of part of the messages.

Description

technical field [0001] The present invention relates to the technical field of network security, in particular to a flow control method, device and system. Background technique [0002] With the continuous improvement of the transmission link rate and the continuous growth of network traffic, the transmission of traffic is often not uniform, and there are sudden situations. That is, the flow reaches a high peak in a certain period of time, but the flow drops to a lower point in the next period of time, and the fluctuation changes greatly. Huge burst traffic often exceeds the storage space and processing capabilities of the backend server, causing the server to discard some packets. Therefore, in addition to the aggregation and distribution of traffic, the front-end equipment can monitor the burst traffic in real time, cache the burst traffic, and output it smoothly after shaping to ensure that the processing capacity of the back-end server is not exceeded. [0003] The exi...

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Problems solved by technology

[0008] Based on the above reasons, the object of the present invention is to provide a flow control method, device and system, which is used to solve the problem that the port storage space of the server in the existing method is very limited and cannot cope with the temporary storage requirements of burst traffic, and the method does not need to increase transmission The number of lines and back-end servers can ensure the integrity of message flow

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