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Multiple port ethernet exchanging device and data transmission method

A switching device, Ethernet technology, applied in the field of multi-port Ethernet switching devices and data transmission, can solve the problems of small forwarding delay and the like

Inactive Publication Date: 2009-12-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the "straight-through" method is that the forwarding delay is small. The problem is that the wrong data frame will also be sent, so it is less used

Method used

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  • Multiple port ethernet exchanging device and data transmission method
  • Multiple port ethernet exchanging device and data transmission method
  • Multiple port ethernet exchanging device and data transmission method

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Embodiment Construction

[0084] Now, specific embodiments according to the present invention will be described with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0085] figure 1 is a block diagram of a multi-port Ethernet switching device according to the present invention, and the processing device is a chip. The rest of the figure except the external memory 130 constitutes this design scheme, and the external memory 130 uses industry-standard DDR SDRAM, which reduces the cost of the entire system while providing high performance. The high-performance Ethernet switching device of the present invention is composed of a data path and a control path. In the figure, the thin solid lines indicate control information or business processing information, and the units connected by the thin solid lines form a control channel to complete behavio...

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Abstract

The present invention provides multiple port ether net switching unit and data transmission method; said processing unit based on store-and-forward and sharing cache mode, featuring said switching unit having service repeating process with data access process separated structure. It contains data path, used for using network received data frame saving to one peripheral storage without any service treatment, in response to control path controlling to read out data frame, to make essential process then transmitting network; and control path adopting multiple stage pipeline architecture used for processing data frame control information, controlling said data path transmitting process to data frame.

Description

technical field [0001] The invention relates to an Ethernet switching device and a data transmission method, in particular to a multi-port Ethernet switching device and a data transmission method with a forwarding and storage separation structure. Background technique [0002] The function of the Ethernet switch chip is to provide two-layer or above-level message forwarding among multiple Ethernet ports. If it is two-layer forwarding, the forwarding behavior should be strictly in accordance with IEEE 802.3 (the standard defined by the International Institute of Electrical and Electronics Engineers on Ethernet Local area network protocol) protocol definition, if it is forwarding above the second layer, it should be implemented in accordance with the IP protocol definition. The Ethernet switching chip is the core device of the Ethernet switching equipment, which determines the performance and functions of the Ethernet switch. [0003] The most important indicator of Ethernet ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/933
Inventor 林郁梅柳波林晖崔靖杰
Owner HUAWEI TECH CO LTD