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A Method for Layer 2 Switch Content Collaboration Based on Software Defined Networking

A software-defined network and layer-2 switch technology, applied in the network field, can solve the problems of lack of cooperative forwarding layer multi-node storage services, single-node storage capacity, speed and other limited capabilities, and achieve low network communication overhead and high forwarding rate Effect

Active Publication Date: 2020-02-04
北京中科海网科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the storage capacity and speed of a single node are limited, and there is still a lack of cooperative forwarding layer multi-node storage services.

Method used

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  • A Method for Layer 2 Switch Content Collaboration Based on Software Defined Networking
  • A Method for Layer 2 Switch Content Collaboration Based on Software Defined Networking
  • A Method for Layer 2 Switch Content Collaboration Based on Software Defined Networking

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] In a specific embodiment, what the present invention adopts is a POF switch, and a POF switch has higher flexibility and programmability than other switches. In a POF switch, which types of data packets in the network are cached and the cache strategy is passed Controller-side programming to achieve.

[0024] In the scenario of this embodiment, it is assumed that the caching policy is that when the local storage capacity value is lower than the threshold K, the POF switch does not store information locally, and adjacent POF switches store data cooperatively. When the local storage capacity value is higher than the threshold K, the POF switch directly stores the data locally.

[0025] In the scenario of this embodiment, it is assumed that the caching strategy is that when the local storage capacity is lower than the threshold K, the data is not stored ...

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Abstract

The present invention provides a method for coordinating the contents of two-layer switches based on software-defined networks. The method specifically includes: Step 1. The SDN controller periodically sends node discovery frames to each switch port of several switches, and performs flow according to the Ethernet frame type. Table matching, query local storage capacity information, obtain node discovery frame with storage capacity information; Step 2, report the node discovery frame in step 1 to the SDN controller, update and maintain the link table and cache status table in real time, delete Invalid link; step 3, through the analysis of the upper layer protocol, obtain the data packet that needs to store the message load; make a decision according to the local storage status and configuration storage strategy, and judge whether to perform local storage operation; the selected layer 2 switch makes a decision, judges Whether to cache the data packet; step 4, through the analysis of the upper layer protocol, it is determined that it is an Ethernet frame that needs to be read, and the layer 2 switch queries the local storage result to determine whether the cached data needs to be read.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a method for content collaboration of a layer-2 switch based on a software-defined network. Background technique [0002] Software Defined Network (Software Defined Network, SDN) is a new type of network architecture system. Its core technology, OpenFlow, realizes flexible control of network traffic by separating the control plane of network equipment from the data plane. The innovation provides a good platform. In SDN, the programmability of the network is improved by decoupling the forwarding layer and the control layer of the network. [0003] In recent years, Huawei has proposed a new software-defined network forwarding technology in the industry, and named it Protocol Oblivious Forwarding (POF). Defined entirely by the control plane. As an enhancement to the OpenFlow protocol, this technology expands the current application scenarios of OpenFlow and lays the foundation f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
CPCH04L67/1095H04L67/1097H04L67/563H04L67/5682H04L67/568
Inventor 王劲林朱晓东王玲芳齐卫宁丁力
Owner 北京中科海网科技有限公司
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