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A virtual network mapping method and device

A technology for virtual network mapping and virtual network, which is applied in the field of virtual network mapping methods and devices, and can solve the problem that SDN environment cannot be fully applied.

Active Publication Date: 2019-07-05
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this cooperative node and link mapping algorithm is a traditional virtual network mapping algorithm and cannot be fully applied in the SDN environment.

Method used

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  • A virtual network mapping method and device
  • A virtual network mapping method and device
  • A virtual network mapping method and device

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0057] In order to facilitate the understanding of the virtual network mapping method provided by the embodiment of the present invention, the principle content on which the virtual network mapping method provided by the embodiment of the present invention is first introduced. The details are as follows:

[0058] The underlying physical network is represented by an undirected weighted graph, and G is used in the embodiment of the present invention S =(N S ,E S )...

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Abstract

The embodiment of the present invention discloses a virtual network mapping method and device. The method includes: when a virtual network request arrives, according to each virtual node n V The corresponding candidate physical node range, aggregate all candidate physical node sets n corresponding to each virtual node V* ;The candidate collection node n of the underlying physical network V* Connect according to the same connection mode as the underlying physical network; determine the available physical links in the reconstructed underlying physical network, and connect each virtual link to ij The corresponding available physical links form the set of available physical links Calculate the link availability of each physical link and the link availability of each virtual link, and sort them in descending order according to link availability; according to the sorted set of available physical links and a virtual link to map the virtual network. By applying the embodiment of the present invention, virtual network mapping in an SDN environment can be realized, and mapping overhead can be reduced.

Description

technical field [0001] The invention relates to the technical field of network virtualization, in particular to a virtual network mapping method and device. Background technique [0002] Network virtualization technology is an important means of network resource sharing in the future network. This technology supports multiple heterogeneous virtual networks (VN, virtual network) to coexist in the same physical network isolated from each other, which is conducive to improving the flexibility and physical Utilization of network resources. In a network virtualization environment, a virtual network provider (VNP, virtual network provider) is responsible for generating VN requests and renting physical resources according to the request; an infrastructure provider (InP, infrastructure provider) is responsible for providing physical resources for carrying VNs. [0003] Due to the strong limitations of the traditional network architecture, a new network architecture is urgently need...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L12/721H04L12/733H04L45/122
CPCH04L12/4641H04L45/122H04L45/123
Inventor 王颖李文璟钟旭霞芮兰兰
Owner BEIJING UNIV OF POSTS & TELECOMM
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