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Method and system for realizing variable-length packet switching

A switching system and switching plane technology, applied in the communication field, can solve problems such as the inability to guarantee the load balance of the switching plane, and achieve the effect of simplifying the transmission of control parameters, simple implementation, and low hardware implementation cost

Inactive Publication Date: 2006-12-13
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Although these two schemes can guarantee the order of transmission of each packet, neither of these two schemes can guarantee the load balancing of each switching plane, and the latter processing scheme also needs to reassemble the packet

Method used

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  • Method and system for realizing variable-length packet switching
  • Method and system for realizing variable-length packet switching
  • Method and system for realizing variable-length packet switching

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Embodiment Construction

[0062] The solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0063] Such as figure 2 Shown, the processing of the scheme of the present invention comprises the following steps:

[0064] Step 201, the input port logically divides the received variable-length packet.

[0065] Specifically, when the packet arrives at the input port of the switching system, the packet is not physically cut, but is logically divided into fixed-length data segments, that is, fixed-length cells, and A "head" mark is marked on the first logical cell of the packet, and a tail mark "tail" is marked on the last logical cell of the packet. The divided variable-length packets are as follows: image 3 as shown, image 3 It includes multiple variable-length packets, and the first cell on the right is marked with "head", and the fourth cell is marked with "tail" to identify a variable-length packet, follow...

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Abstract

The invention discloses a variable-length sectionalization bag switching method and system in the multi-plane switching system, which comprises the following steps: a. the distributor records service quantity of each switching plane; the input port proceeds logical split for the received variable-length sectionalization bag; b. the distributor of input port selects minimum plane of service quantity from all switching planes to send sectionalization bag to the selected plane after it affirms itself idle condition and the variable-length sectionalization bag reaches the input port; c. the switching plane transmits the received sectionalization bag sequence to corresponding multi-connector of output end; d. the multi-connector sends itself sectionalization bag to output port. The invention can transmit variable-length sectionalization bag on each switching plane balancedly without remodeling combined sectionalization bag for multi-connector, which improves the switching efficiency.

Description

technical field [0001] The present invention relates to switching technology in the field of communication, more precisely, to a method and system for realizing variable-length packet switching. Background technique [0002] At present, factors such as the rapid growth of network traffic, the improvement of IP QoS requirements, and the gradual improvement of optical transmission technology have made the industry's performance requirements for network routers / switches continue to increase. For example, routers / switches are usually required to have large switching capacity. , and require it to have a short switching delay, etc. [0003] The current large-capacity switching system is usually implemented based on cell-based. Specifically, before the variable-length packet is switched, the packet (packet) is first divided into fixed-length cells. After all cells have passed through the switch fabric, they are reassembled into packets at the output port. This technology can brin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56
Inventor 许都洪峰钟海珊
Owner HUAWEI TECH CO LTD
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