SDN (software-defined networking)-based ICN (information-centric networking) routing method

A routing and router technology, applied in the Internet field, can solve the problems of low ICN routing efficiency and inflexible control

Active Publication Date: 2016-07-27
GUANGDONG POLYTECHNIC NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a new ICN routing mechanism under the fusion fr...

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  • SDN (software-defined networking)-based ICN (information-centric networking) routing method
  • SDN (software-defined networking)-based ICN (information-centric networking) routing method

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Experimental program
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Embodiment Construction

[0012] specific implementation method

[0013] The schematic diagram of the implementation framework of the present invention is as figure 1 shown.

[0014] Step1: The user sends an interest packet to router 1. If the content corresponding to the interest packet is cached in the CS in router 1, the content will be returned to the user in the form of a data packet. If there is no corresponding content in the CS, then query the PIT , if the list contains matching content, then add the requested port to the PIT list, otherwise, query the forwarding information database (ForwardingInformationTable), if there is matching content in the FIB, then forward according to the FIB The rule forwards the Interest to the next-hop router. If no matching information is found in the above three libraries, the Interest packet is forwarded to the controller.

[0015] Step2: Complete the generation of the interest packet routing mechanism in the controller, and the flow chart of the mechanism g...

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Abstract

The invention relates to an SDN (software-defined networking)-based ICN (information-centric networking) routing method. According to the method, the thought of the separation of control and forwarding of SDN (software-defined networking) is fused in an ICN (information-centric networking) structure, network sources and network statuses are sensed, and the content name-based routing of the ICN is realized. The method mainly comprises following two steps: (1) if the interest packet of the query content of the ICN and the content are located in the same controller and are in the same community, a shortest path is adopted to forward the interest packet, if the interest packet of the query content of the ICN and the content are not in the same community, a shortest path which passes the least communities is adopted to forward the interest packet; and (2) if the interest packet of the query content of the ICN and the content are not under the same controller, query is carried out according to the set of adjoining caching capacity importance degrees of current controller, if the content is in a node controlled by a certain adjoining controller, the data packet is returned to a user along a route, if the content is not in nodes controlled by the adjoining controllers, a controller with the largest neighbor connection importance degree is set as the current controller, a next round of query is carried out until the number of the times of query achieves the maximum number of the times of query. With the method adopted, problems such as low routing efficiency and difficult configuration of the ICN can be solved.

Description

technical field [0001] The invention belongs to the technical field of Internet. Background technique [0002] According to Cisco (Cisco) statistics, global network traffic has increased by 4 times in the past 5 years. From 2012 to 2017, global network traffic will continue to grow at a compound annual growth rate of 23%. And with the continuous emergence of new applications (such as the Internet of Things model, cloud computing model), traffic generation and transmission methods will also undergo fundamental changes. Most of this traffic will come from user-driven content acquisition apps. In order to adapt to the transformation of Internet applications from the sender-driven end-to-end communication mode to the receiver-driven massive content acquisition mode, researchers have proposed a new type of information-centric network architecture in recent years, collectively referred to as information-centric networks. (Information-Centric Networking, referred to as ICN). At...

Claims

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Application Information

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IPC IPC(8): H04L29/08
CPCH04L67/63
Inventor 蔡君
Owner GUANGDONG POLYTECHNIC NORMAL UNIV
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