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CLC number: TP393

On-line Access: 2018-01-12

Received: 2016-07-08

Revision Accepted: 2016-11-10

Crosschecked: 2017-11-24

Cited: 0

Clicked: 1820

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Hong-chao Hu

http://orcid.org/0000-0002-9770-6610

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Frontiers of Information Technology & Electronic Engineering  2017 Vol.18 No.11 P.1854-1866

10.1631/FITEE.1601404


A forwarding graph embedding algorithm exploiting regional topology information


Author(s):  Hong-chao Hu, Fan Zhang, Yu-xing Mao, Zhen-peng Wang

Affiliation(s):  National Digital Switching System Engineering & Technological R&D Center, Zhengzhou 450002, China

Corresponding email(s):   huhongchao@gmail.com

Key Words:  Network function virtualization, Virtual network function, Forwarding graph embedding


Hong-chao Hu, Fan Zhang, Yu-xing Mao, Zhen-peng Wang. A forwarding graph embedding algorithm exploiting regional topology information[J]. Frontiers of Information Technology & Electronic Engineering, 2017, 18(11): 1854-1866.

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Abstract: 
network function virtualization (NFV) is a newly proposed technique designed to construct and manage network functions dynamically and efficiently. Allocating physical resources to the virtual network function forwarding graph is a critical issue in NFV. We formulate the forwarding graph embedding (FGE) problem as a binary integer programming problem, which aims to increase the revenue and decrease the cost to a service provider (SP) while considering limited network resources and the requirements of virtual functions. We then design a novel regional resource clustering metric to quantify the embedding potential of each substrate node and propose a topology-aware FGE algorithm called ‘regional resource clustering FGE’ (RRC-FGE). After implementing our algorithms in C++, simulation results showed that the total revenue was increased by more than 50 units and the acceptance ratio by more than 15%, and the cost of the service provider was decreased by more than 60 units.

一种基于区域拓扑信息的转发图映射算法

概要:转网络功能虚拟化(network function virtualization, NFV)是近年提出一种用于动态和有效地构建和管理网络功能的新技术。如何为虚拟网络功能的转发图分配资源是NFV研究中的关键难题之一。本文将转发图映射(forwarding graph embedding, FGE)问题建模为0-1整数规划问题,旨在增加服务提供商的收益并降低开销,同时满足受限资源和虚拟功能需要的约束。接着,设计了量化每个底层节点嵌入潜力的新型区域资源聚类指标,并提出基于拓扑感知的转发图映射算法,即基于区域资源聚类的转发图算法(regional resour cecluster-FGE, RRC-FGE)。最后,通过C++语言实现了该算法,仿真结果表明:服务提供商的收益增加了50多个单位,接受率提高了15%以上,同时成本下降了60多个单位。

关键词:网络功能虚拟化;虚拟网络功能;转发图映射

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