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Double-layer isolation method for network resources based on net field programmable gate array

A technology of network resources and switches, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as the inability to reserve network resources for a single service, the inability to adapt to changing network requirements, and the lack of implementation methods. Controllable allocation, reduced implementation costs, and simple implementation methods

Active Publication Date: 2013-06-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Integrated services reserve separate resources for each business, but it is easy to cause waste of resources; differentiated services flexibly allocate resources according to labels such as priority, but cannot reserve isolated network resources for a single business
[0003] The models of integrated services and differentiated services have their own advantages, but they lack flexibility and cannot adapt to changing network requirements; on the other hand, the current network resource allocation methods are mostly based on software simulation or theoretical derivation, and lack specific implementation methods

Method used

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  • Double-layer isolation method for network resources based on net field programmable gate array

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Embodiment Construction

[0018] The present invention will be described in detail below according to the accompanying drawings.

[0019] The present invention is based on the double-layer isolation method of the network resources of the programmable switch, comprising the following steps:

[0020] Step 1: The packet enters the programmable switch through one of the 8 input ports.

[0021] The programmable switch has 8 input ports in total, including 4 1G Ethernet ports and 4 DMA ports. The switch selects data packets from one of the eight input ports in turn to enter the network layer in a polling manner.

[0022] Step 2: The network layer protocol selects the output port of the data packet according to the data packet header according to the routing table, and marks the corresponding output queue in the data packet header (for use in step 4).

[0023] Step 3: Use a two-layer network resource isolation method to schedule the data packets marked with the output queue.

[0024] This step is the core ...

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Abstract

The invention discloses a double-layer isolation method for network resources based on a net field programmable gate array. In the method, the network resources are divided into a gathered flow layer and a flow layer, a specified bandwidth is reserved for each gathered flow when the gathered flow layer is scheduled, and a plurality of flows in each gathered flow compete for the bandwidth according to the weight when the flow layer is scheduled. By the aid of a low-cost Net FPGA (field programmable gate array) hardware device, the network resources are flexibly, fairly and controllably distributed, network resource distribution implementation cost is reduced, the implementation method is simple and convenient, measures are flexible, and network service quality can be remarkably ensured and is unrelated to a network layer protocol.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a method for double-layer isolation of network resources based on a programmable switch (Net Field Programmable Gate Array, NetFPGA). Background technique [0002] The Internet has achieved great success in the past few decades, and it provides people with a brand-new platform for exchanging information and receiving information. Its widespread popularity has promoted the development and application of network technology. However, the huge network also limits its future development. For example, with the scale and size of the current network, it is very difficult to guarantee the quality of service for each network service. Traditional QoS implementation methods are generally based on integrated service or differentiated service models. Integrated services reserve separate resources for each business, but it is easy to waste resources; differentiated services flexibl...

Claims

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Application Information

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IPC IPC(8): H04L12/931H04L12/861
Inventor 吴春明曾若瑜周伯阳姜明
Owner ZHEJIANG UNIV