Method and apparatus for implementing dynamic speed adjustment for data packets based on logic

Abstract

The core idea of the method is: to implement the bandwidth control self-adapting along with the increasing of packet size, makes the bandwidth increase and decrease along the packet size; the bandwidth can be controlled in the range from 0% to 100%, and can be independently dispatched between multi ports. The method features following point: the time interval between packets dynamically varies along with the transmitted packet size to remove the influence of packet size on the available bandwidth by using current fixed time delay scheme.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a method and device for realizing dynamic speed regulation of data packets based on logic. Background technique [0002] In the field of data communication, all aspects of data communication product development, production, and operation network construction need to conduct data traffic test, especially in the field of data communication based on IP (Internet Protocol), the traffic test of data business is even more important. Flow test usually adopts the method of docking test between the equipment under test (such as transmission equipment, layer 2 / layer 3 switching equipment) and standard data test instruments, such as figure 1 As shown, the principle is: the test instrument generates test data according to the preset flow rate of the test terminal, and the test data is provided to the device under test through the test interface connected between the test instrumen...

AI Technical Summary

Problems solved by technology

[0028] Although the speed regulation scheme based on the fixed delay of the whole packet is relatively simple to implement, and the speed regulation of data services with fixed packet length is relatively accurate, it has a relatively prominent shortcoming: it cannot adapt to the change of packet length, resulting in When sending files, the actual transmission bandwidth of the line changes with the packet length. For example, 100M Ethernet sends messages with increasing length from 64 bytes to 1518 bytes. The fixed delay T0 calculated by the speed scheme = 12773 cycles (calculated according to the median value of 791 bytes), that is, no matter whether the length of the sent packet is 64 bytes or 1518 bytes, the delay between packets is fixed at 12773 cycles. From the actual line rate, When sending short packets (packets shorter than 791 bytes), the effective bandwidth of the line is lower than 50%; while sending long packets (packets longer than 791 bytes), the line utilization rate is higher than 50%.

[0029] Because of such defects, for incremental packet length, especially for random packet length test data, the actual effective bandwidth of the line is often difficult to be effectively controlled, resulting in the introduction of many uncertain factors in the test process, and the test effect is not satisfactory

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