Realizing method of data stream constraint control

Abstract

The method comprises: constructing a token bucket that includes depth parameter and bandwidth parameter; the depth of the token bucket is sum of the fixing token bucket value and the dynamical token bucket depth value; in term of flow rate allocating to users, the relevant token numbers are added into the token bucket, and meanwhile in term of actual flow rate of users, the token numbers is subtracted from the token bucket; before subtracting the token numbers, it is made illegal that the token numbers is small than the depth value of fixing token bucket; when the token is added at the next time, firstly the depth value of fixing token bucket is filled up, and then the flow rate of users is allowed to pass through; it also can be implemented by adding tokens based on flow rate; the depth value of dynamical token bucket varies along with maximum bandwidth; the depth value of fixing token bucket can be a token numbers corresponding to a length of packet with maximum data length.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for realizing data flow constraint control. Background technique [0002] CAR (Committed Access Rate) is an allowed access rate technology used to restrict user traffic, and it is an effective bandwidth management method for IP networks. CAR is mainly used in the communication field to limit traffic for customers. [0003] It is unrealistic to rely on users to consciously send data streams according to service rules. The user's traffic is likely to exceed the service level agreement (SLA) signed with the service provider, which will occupy the bandwidth of other users, resulting in other legitimate traffic. services. In this case, in order to ensure the normal operation of the network, user traffic needs to be restricted at the network entrance to ensure that user traffic does not violate regulations and that users do not receive additional services beyond the a...

AI Technical Summary

Problems solved by technology

[0021] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art when the data flow is constrained, the token bucket occupies a large storage space, the control of short-term burst flow is defective, and the pass rate of long data packets is relatively low, and provides a A method for implementing data flow constraint control, improving the pass rate of long data packets, effectively controlling short-term burst traffic, and reducing the storage space occupied by token buckets

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