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SDN-based distributed virtual network mapping method

A technology of virtual network mapping and virtual network, applied in the field of regional networks, can solve the problems of wasting space resources and aggravating the communication burden of communication links, etc., to achieve the effects of strengthening centralized management and control, improving overall utilization efficiency, and reducing mapping time.

Active Publication Date: 2022-02-08
BEIJING UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, this form increases the communication burden of the communication link, uses too much communication space resources, and requires regular communication between nodes to maintain the accurate timeliness of the information table, so a lot of space resources are wasted

Method used

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  • SDN-based distributed virtual network mapping method
  • SDN-based distributed virtual network mapping method
  • SDN-based distributed virtual network mapping method

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Experimental program
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Embodiment Construction

[0023] Software Defined Networking (SDN) separates the control plane from the data plane and realizes regional centralized control, such as figure 2 . During the virtual network mapping process, the main function of the SDN controller is to receive the virtual network topology information that needs to be mapped, maintain the physical network topology information of the area, and control the mapping time and scope of the virtual network topology.

[0024] ①The SDN controller collects node resources and link resources in the control area, and establishes a physical node resource table and a physical link resource table arranged in descending order according to the amount of resources, and each physical node establishes a link information that is directly connected to itself. Physical link resource sub-table;

[0025] The SDN controller and each physical node need to establish a resource table. Such as image 3 , the control area of ​​the SDN controller contains 6 physical n...

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Abstract

The invention discloses an SDN-based distributed virtual network mapping method. Virtual network mapping is divided into virtual node mapping and virtual link mapping. Under the control of the SDN controller, the controller can collect and master all the node and link information of the regional network, and perform virtual node mapping according to the CPU size used by the virtual nodes arranged in descending order. After the virtual node is successfully mapped, the information to be mapped is sent to the physical node, so that the physical node can map the relevant links in a distributed manner, and use the shortest path algorithm to select the best path according to the link bandwidth and link length. Virtual link mapping. In this way, the latest status of nodes and links can be controlled globally, and link mapping can be performed in a distributed manner while reducing the use of node resources, which shortens the mapping time, strengthens the security of the physical network, and improves the mapping efficiency.

Description

technical field [0001] The invention relates to the technical field of virtual network mapping, especially in a regional network under the centralized control of a software-defined network (SDN) controller. Background technique [0002] The measuring standard of the virtual network mapping is the length of the mapping time and the usage of the transmission space during the mapping process. [0003] The virtual network mapping under the SDN controller, because there is an SDN controller for centralized monitoring and management of the area, the area information can be updated in real time; in terms of mapping, the mapping and matching of nodes and links can be performed inside the controller, and the matching Success information is sent to the corresponding nodes and links. In this way, the matching time can be reduced, and the occupation of redundant transmission space can also be reduced. However, the SDN controller can only perform sequential matching during the matching...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L41/04H04L41/12H04L41/14
CPCH04L41/04H04L41/12H04L41/145
Inventor 韩永亮霍如
Owner BEIJING UNIV OF TECH
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