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Flow-control method based on network processor

A network processor and flow control technology, applied in the field of data communication, can solve the problems of unsmooth controlled flow, unsmooth flow, inaccurate control, etc., and achieve the effect of fixed service time, simple implementation and accurate control

Inactive Publication Date: 2005-04-20
ZTE CORP
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Problems solved by technology

[0009] Although this method uses a hardware timer, its control method is based on seconds as the calculation unit, and the timer is refreshed every second, resulting in uneven traffic. From the control results, there will be occasional interruptions in user traffic. Continued situation
[0010] To sum up, there are problems in the existing flow control technology, such as complicated algorithm implementation, inaccurate control, unsmooth controlled flow, unfixed service time, and difficult generalization. Due to the limitations of the network processor itself in the existing technology, it is necessary to propose a flow control method based on the network processor to solve the above problems

Method used

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specific Embodiment approach

[0054] In this specific embodiment, the network processor IXP1200 of Intel Corporation is utilized to realize the flow control method based on the network processor proposed by the present invention. Since there is no clock in the IXP1200, there is only one counter, so the time unit second needs to be converted into cycle. The main frequency of the counter in the IXP1200 is consistent with that of the CPU, which is 200MHz / second. Related experiments have been done on Intel's network processor IXP1200, and the specific implementation methods are as follows:

[0055] Hardware environment: IXP1200 network

[0056] The processing steps of the software part are as follows:

[0057] After the user accesses, the control CPU writes the user's bandwidth value P into the memory as one of the input parameters of the algorithm, and at this time, the arrival time t1 of the previous data packet and the remaining token number C1 in the token bucket The initial value is 0;

[0058] When t...

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Abstract

A flow control method based on a network processor includes: designing parameters for the flow control algorithm, computing parameters related to the arrived time scale of the current data packet, transmitting said data packet and token if L is smaller than C2 according to the compared result to the length L of the current data packet and current token number C2 in the token bucket, otherwise, they are given up, regulating the two parameter values of the token number and time scale in said token bucket.

Description

technical field [0001] The invention relates to a flow control method in the field of data communication, in particular to a method for controlling Internet flow of broadband network users on a network processor. Background technique [0002] At present, with the promotion and development of broadband networks, the number of users of broadband networks has increased dramatically. Since most users using the broadband network are relatively scattered, telecom operators not only need to perform general business management on the access broadband users, but also need to have the ability to provide different service levels for users of different levels, that is, to provide users with The used bandwidth is controlled separately; each flow control method is based on different hardware, which must not only meet the general requirements of user flow control, but also be simple to operate and control accurately. [0003] In the current network equipment, the...

Claims

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Application Information

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IPC IPC(8): H04L12/08H04L12/24H04Q3/00H04Q3/545
Inventor 胡福军
Owner ZTE CORP
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