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Data forwarding method and device

A forwarding method and forwarding equipment technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as high price and large volume, and achieve the effect of solving overflow

Active Publication Date: 2015-10-21
BEIJING HAN NETWORKS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the use of a high-precision local oscillator can reduce the clock deviation as much as possible to avoid packet loss, but the high-precision local oscillator has disadvantages such as high price and large volume.

Method used

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Embodiment Construction

[0025] The various embodiments described below are by way of illustration only and should not be construed as limiting the scope of the present disclosure. Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail. Also, terms described below that are defined in consideration of functions in the present invention may differ according to user and operator's intention or practice.

[0026] figure 1 A block diagram of a data forwarding device 100 according to an embodiment of the present invention is shown.

[0027] like figure 1 As shown in , the data forwarding device 100 may include a buffer 120 , an adjustment unit 130 , a detection unit 150 , a determination unit 160 and a setting unit 170 .

[0028] Buffer 120 may store data packets to be forwarded. The de...

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Abstract

The invention provides a method and equipment for forwarding data. The method for forwarding the data comprises the following steps of setting a buffer threshold value related to a buffer area which is used for storing data packets to be forwarded; detecting the storing state of the buffer area, and determining whether the storing state of the buffer area reaches or exceeds the buffer threshold value or not; and when the storing state of the buffer area reaches or exceeds the buffer threshold value, reducing the byte length of a lead code of at least one data packet contained in the forwarded data packets. The method for forwarding the data has the advantage that the problems of overflowing of the data packets of the buffer area and the overlong waiting time of the data packets of the buffer area are solved.

Description

technical field [0001] The present invention relates to a data forwarding method and device, more specifically, to a data forwarding method and device based on a variable-length preamble. Background technique [0002] In recent years, with the increase of Ethernet-based data traffic, the requirements for Ethernet switches are getting higher and higher. In the Ethernet switchboard, the clock synchronization technology is not adopted, but the asynchronous mode in which the clock is generated by the local oscillator is adopted. According to the IEEE802.3 standard, Ethernet devices allow ±100PPM frequency deviation. When negative skew occurs in an Ethernet switch (that is, the receive rate is greater than the send rate), especially in the case of forwarding at wire speed, the packet buffer of the switch is slowly filled up and eventually loss occurs due to buffer overflow. package phenomenon. [0003] Although the use of a high-precision local oscillator can reduce the clock ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/861
Inventor 李西昆马奔利
Owner BEIJING HAN NETWORKS TECH CO LTD