System and method for segmenting and regrouping data packets on basis of CLOS (Chinese library of science) switch network

A technology for switching networks and data packets, applied in data switching networks, digital transmission systems, transmission systems, etc., can solve problems such as bus efficiency can only reach 50%, increase bus operating frequency, throughput chip bottlenecks, etc., to achieve working clock The effect of low requirements, improved bus efficiency, and improved throughput

Active Publication Date: 2015-09-30
FENGHUO COMM SCI & TECH CO LTD +1
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Problems solved by technology

But it will also bring problems: the delay to reach the same OM through different CMs may be different
For 64 bytes, 129 bytes and other packet lengths, the bus efficiency can only reach 50%
In order to meet the throughput requirements of these data packets of a spe

Method used

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  • System and method for segmenting and regrouping data packets on basis of CLOS (Chinese library of science) switch network
  • System and method for segmenting and regrouping data packets on basis of CLOS (Chinese library of science) switch network
  • System and method for segmenting and regrouping data packets on basis of CLOS (Chinese library of science) switch network

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0037] see figure 2 As shown, the embodiment of the present invention provides a system based on CLOS switching network packet segmentation and reassembly. The CLOS switching network includes several input modules IM, several intermediate modules CM and several output modules OM; each CM Respectively connected to each IM and each OM, each IM includes a composite packet scheduler, a variable-length slice unit, and a routing unit; each OM includes a reassembly unit; where:

[0038] The composite package scheduler includes the queue scheduler, composite package container and raw package cache;

[0039] The queue scheduler is used to combine the data packets originating from the same virtual output queue VOQ and whose packet length is less than the preset value to form a combined package, which is marked with a corresponding mark and sent to the...

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Abstract

The invention discloses a system and a method for segmenting and regrouping data packets on the basis of a CLOS (Chinese library of science) switch network, and relates to the technical field of communication. The CLOS switch network comprises a plurality of input modules IM, a plurality of central modules CM and a plurality of output modules OM. Each central module CM is connected with each input module IM and each output module OM; each input module IM comprises a combined packet scheduler, a variable-length slicing unit and a routing unit; each output module OM comprises a regrouping unit. The system and the method have the advantages that the efficiency of buses can be improved, the throughput can be obviously enhanced for short packets and packets with special lengths under the conditions of identical widths of the buses and identical work efficiency of the buses, and the performance of the system can be obviously enhanced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a system and method for dividing and reassembling data packets based on a CLOS switching network. Background technique [0002] The cell-based CLOS switching network has the characteristics of non-blocking, expandable and large capacity, and has become the mainstream of switching chips at present. The CLOS switching network includes IM (Input Module, input module), CM (Central Module, intermediate module) and OM (Output Module, output module), which can form a 3-level CLOS structure and can be easily expanded to 5-level CLOS structure. By folding, the functions of IM and OM can be realized in one chip, while the function of CM can be realized in another chip. [0003] The Ethernet data packet (Packet) is variable in length, and the maximum packet length may reach 16,000 bytes. Switching based on data packets in the switch chip will bring a large delay and require a large ...

Claims

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Application Information

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IPC IPC(8): H04L12/951H04L47/43
CPCH04L49/9057
Inventor 张伟黄元波
Owner FENGHUO COMM SCI & TECH CO LTD
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