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Method and system for distinguishing and transmitting elephant flow

A technology of elephant flow and forwarding tables, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as congestion, elephant flow differential treatment, and increasing data, and achieve the effect of reducing congestion

Inactive Publication Date: 2013-03-20
SUZHOU CENTEC COMM CO LTD
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Problems solved by technology

However, in the prior art, elephant flows are not treated differently, which increases the possibility of data "congestion"

Method used

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  • Method and system for distinguishing and transmitting elephant flow
  • Method and system for distinguishing and transmitting elephant flow
  • Method and system for distinguishing and transmitting elephant flow

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. But these embodiments do not limit the present invention. Based on the various embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work should be included in the protection scope of the present invention .

[0022] Please refer to figure 1 and figure 2 As shown, it is a specific embodiment of the system and corresponding method for distinguishing and forwarding elephant flows in the present invention. Due to the high degree of dependence on the TCAM in the existing flow control scheme, limited by the cost and size of the TCAM, it is difficult to support large flow table entries. Therefore, in the embodiment of the present invention, a hash (Hash) table is mainly used for implementation, wherein the system mainly includes: an access control list (Access Control List...

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Abstract

The invention provides a method and a system for distinguishing and transmitting an elephant flow. The method comprises the following steps: S1, setting characteristic flow entry of the elephant flow and an elephant flow recognizer for recognizing the elephant flow to capture a flow belonging to the elephant flow; S2, extracting a keyword combination in the captured flow to be installed in a micro-flow table, and determining an optimal path for transmitting the data flow; and S3, looking up the micro-flow table and transmitting the elephant flow based on the optimal path, and looking up a second layer or a third layer transmitting table to transmit normal flows. According to the method, by capturing the flow belonging to the elephant flow, making a difference to the elephant flow data package and selecting an optimal transmitting path to transmit the elephant flow, as a result, the possibility of 'congestion' is greatly reduced.

Description

technical field [0001] The invention relates to the field of Ethernet switching chips, in particular to an ASIC-based method and system for realizing distinguishing and forwarding elephant flows. Background technique [0002] Currently, in the data center network, flow control is the core content. In the existing technology, a single flow table (such as TCAM) is generally used for simple control, and the ACL is used to match the data flow for redirection and forwarding. Since there are too many data flows in the data center, it is too costly to control all the flows. Big. Statistics show that 90% of the data traffic in the data center is generated by 10% of the flows, so as long as the 10% of the flows can be identified and controlled, the data center network can be well optimized. % of the flow we call the elephant flow. However, the elephant flow is not treated differently in the prior art, thus increasing the possibility of data "congestion". Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/813H04L47/20
Inventor 张卫峰方沛昱廖继平
Owner SUZHOU CENTEC COMM CO LTD
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