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Towards Incremental Deployment of Diverse Network Architectures on the Internet

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China Communications 2018年第5期15卷 149-161页

作者： Ming Chen Ke Ding Changyou Xing Honghua Zhao Qinghua Wu Gaogang Xie Army Engineering University of PLA Nanjing 210007China Institute of Computing Technology CASBeijing 100190China

In the past decades, many cleanslate future network architectures have gained limited deployment in current Internet, due to the stability and rigidity of TCP/IP, the narrow waist of the Internet. We first propose three principles that the future Internet architecture should obey to be well-defined network architecture, i.e. supporting service innovation and enabling evolvability. By abstracting different modes from TCP/IP network and sdn technology, we argue that the centric-distributed-centric(CDC) mode has great potential for the well-defined future network architecture in which diverse network architectures could be incrementally deployed and coexist with each other. Prototype system regulated by CDC mode was developed. Experimental results reveal that CDC can support diverse architectures to coexist in the current Internet and thus enables the Internet to evolve.

关键词：网络体系结构因特网 TCP/IP 原型系统建筑学 CDC 稳定性 sdn

Virtual network embedding in software-defined hybrid networks

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The Journal of China Universities of Posts and Telecommunications 2018年第4期25卷 75-85页

作者： Xu Ran Wang Wendong Gong Xiangyang Que Xirong State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunication

Network virtualization provides a powerful way of sharing substrate networks. Efficient allocation of network resources for multiple virtual networks( VNs) has always been a challenging task. Especially under the everincreasing demand of customized VN requests,many problems arise as network conditions change constantly.Particularly with the emergance of resource conflict alongside the development of VNs,service provider( SP) needs to provide a faster and more effective solution. Recently,software defined network( sdn) has emerged as a new networking paradigm,sdn’s centralized control and customizable routing features present new opportunities for convenient and flexible embedding VNs in the network. However,due to the limitations of sdn,replacing all legacy devices in current operational networks by sdn-enabled switches in a short span of time is impractical.Thus,in our study,we focus on the scenario of VN embedding( VNE) in software-defined hybrid networks. In this work,first of all,we propose partially deploying sdn nodes; and then,we use the characteristics of sdn to allocate resources for VN requests,and redirect the path for requests conflict in hybrid sdn network. We formulate the problems and provide simple algorithms to solve them. Simulation results show that our scheme has high ratio in responsiveness and acceptance.

关键词： sdn hybrid network VNE

ForSA — A New Software Defined Network Architecture Based on ForCES

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China Communications 2016年第S1期13卷 16-31页

作者： LI Chuanhuang CEN Lijie GONG Liang WANG Weiming JIN Rong LAN Julong School of Information and Electronic Engineering Zhejiang Gongshang University National Digital Switching System Engineering & Technological R&D Center

In recent years, sdn(Software Defined Network) as a new network architecture has become the hot research point. Meanwhile,the well-known Open Flow-based sdn got a lot of attention. But it can't provide a flexible and effective network resource description method.As an open programmable technology, For CES(Forwarding and Control Element Separation)has also been concerned. However, For CES is confined within a single network node and cannot be applied to the entire network. This paper proposes a new architecture — ForS A(ForC ESbased sdn architecture). The architecture is added a configuration layer based on the traditional sdn architecture, which solves the problem that the northbound interface is not clear between the application layer and the control layer in the sdn architecture. ForS A also implements the compatibility within various forwarding devices in the forwarding layer.

关键词： software defined network ForCES sdn architecture

On Effective Virtual Networks Interconnection

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China Communications 2016年第3期13卷 165-173页

作者： Huang Tao Huang Chengyuan Ma Ningning State Key Laboratory of Networking and Switching Technology BUPTChina Beijing Advanced Innovation Center for Future lntemet Technology Beijing 100876China

The network services today require extremely agile and mobile, however, the traditional IP infrastructures are so rigid that cannot fit services well. A way should be put forward to automate the network to improve responsiveness to change. sdn and network virtualization(NV) are two hottest approaches to make networking more automated and scalable to support virtualized and cloud environments. Network virtualization combines hardware and software network resources and network functionality into a single virtual network. sdn is created to simplify traffic management and achieve operational efficiencies by establish and exercising central control over packet forwarding. In this paper, we focus on the situation where sdn controller needs to connect two virtual networks temporarily. We put forward three algorithms to try to make this connection more effective and evaluate these three algorithms.

关键词：网络互联虚拟化网络服务 sdn 基础设施知识产权响应速度虚拟网络

面向sdn数据层的双虚假IP地址动态跳变技术

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信息网络安全 2022年第2期 76-85页

作者：胡瑞钦谭晶磊彭心荷张红旗信息工程大学密码工程学院郑州450001 河南省信息安全重点实验室郑州450001 延安大学经济与管理学院延安716000

嗅探攻击是一种常见且隐蔽性很强的网络攻击方式,这种攻击方式对通信数据的机密性造成了严重威胁,然而传统的防御手段受制于网络攻防对抗的严重不对称性,难以有效应对这种威胁。文章提出了一种面向sdn数据层的双虚假IP地址动态跳变技术... 详细信息

嗅探攻击是一种常见且隐蔽性很强的网络攻击方式,这种攻击方式对通信数据的机密性造成了严重威胁,然而传统的防御手段受制于网络攻防对抗的严重不对称性,难以有效应对这种威胁。文章提出了一种面向sdn数据层的双虚假IP地址动态跳变技术,首先利用双虚假IP地址破坏通信数据在空间维度上的关联性,然后通过周期性IP地址跳变破坏通信数据在时间维度上的关联性,从而提高嗅探攻击者重组通信数据的难度以及成本。抗攻击有效性分析以及仿真实验表明,文章所提技术在提高抗嗅探攻击能力的同时,能保证较低的CPU消耗和通信时延。

关键词：嗅探攻击移动目标防御 IP跳变 sdn

Reliable Failure Restoration with Bayesian Congestion Aware for Software Defined Networks

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Computer Systems Science & Engineering 2023年第9期46卷 3729-3748页

作者： Babangida Isyaku Kamalrulnizam Bin Abu Bakar Wamda Nagmeldin Abdelzahir Abdelmaboud Faisal Saeed Fuad A.Ghaleb Faculty of Computing Universiti Teknologi MalaysiaJohor Bahru81310Malaysia Faculty of Computing and Information Technology Sule Lamido UniversityKafin HausaP.M.B.048Nigeria College of Computer Engineering and Sciences PrinceSattam bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia Department of Information Systems King Khalid UniversityMuhayel Aseer61913Saudi Arabia Taibah University P.O.Box 344Medina41411Saudi Arabia School of Computing and Digital Technology Birmingham City UniversityBirminghamB47XGUK

SoftwareDefined Networks(sdn)introduced better network management by decoupling control and data plane.However,communication reliability is the desired property in computer networks.The frequency of communication link failure degrades network performance,and service disruptions are likely to occur.Emerging network applications,such as delaysensitive applications,suffer packet loss with higher Round Trip Time(RTT).Several failure recovery schemes have been proposed to address link failure recovery issues in sdn.However,these schemes have various weaknesses,which may not always guarantee service availability.Communication paths differ in their roles;some paths are critical because of the higher frequency usage.Other paths frequently share links between primary and backup.Rerouting the affected flows after failure occurrences without investigating the path roles can lead to post-recovery congestion with packet loss and system throughput.Therefore,there is a lack of studies to incorporate path criticality and residual path capacity to reroute the affected flows in case of link failure.This paper proposed Reliable Failure Restoration with Congestion Aware for sdn to select the reliable backup path that decreases packet loss and RTT,increasing network throughput while minimizing post-recovery congestion.The affected flows are redirected through a path with minimal risk of failure,while Bayesian probability is used to predict post-recovery congestion.Both the former and latter path with a minimal score is chosen.The simulation results improved throughput by(45%),reduced packet losses(87%),and lowered RTT(89%)compared to benchmarking works.

关键词： sdn OpenFlow failure restoration critical path Bayesian probability

An sdn Oriented Loop Detection Mechanism Based on TTL Statistics

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China Communications 2020年第6期17卷 1-12页

作者： Tao Yu Longfei Yu Diyue Chen Hongyan Cui Jilong Wang Institute of Network Science and Cyberspace Tsinghua UniversityBeijing 100084China Beijing Advanced Information Network Key Laboratory School of Information and Communication EngineeringBeijing University of Posts and TelecommunicationsBeijing 100876China Network System Architecture and Integration Beijing Key Laboratory Beijing 100876China

The rise of the network has injected new impetus into the development of traditional networks.Due to the complexity of the network itself and its network programmability,there is a risk of routing loops occurring in the sdn network.This paper proposes a loop detection mechanism.According to the Time To Live(TTL)value of the loop packet,there is approximately periodicity in the same loop.We use sFlow to count the number of packets corresponding to each TTL value of a switch in the loop over a period of time,and perform discrete Fourier transform on the obtained finite-length sequence to observe its frequency domain performance and determine whether there are periodic features.By doing so,it is determined whether there is a routing loop,and the purpose of passively detecting the routing loop is achieved.Compared to existing algorithms,it has advantages in real-time,scalability and false positive rate.The experimental results show that the routing loop detection algorithm based on TTL statistics in this paper still maintains high judgment accuracy under the scenarios of lower stream sampling rate and smaller detection period.

关键词： sdn Loop Detection TTL sFlow

基于sdn与NDN的卫星网络多约束路由算法

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计算机应用研究 2022年第8期39卷 2454-2458页

作者：刘治国姚巧雨潘成胜大连大学信息工程学院辽宁大连116600 大连大学通信与网络重点实验室辽宁大连116600 南京信息工程大学电子与信息工程学院南京211800

针对NDN卫星网络内容传输时延高、丢包率高且请求命中率低的问题,提出了一种基于sdn与NDN的卫星网络多约束路由算法,并命名为SNMcRA。基于sdn的集中控制与全局视图,通过建立多约束路由模型,将链路多约束信息与蚁群算法相结合以求解满足... 详细信息

针对NDN卫星网络内容传输时延高、丢包率高且请求命中率低的问题,提出了一种基于sdn与NDN的卫星网络多约束路由算法,并命名为SNMcRA。基于sdn的集中控制与全局视图,通过建立多约束路由模型,将链路多约束信息与蚁群算法相结合以求解满足时延、带宽、丢包率多约束的代价最小路径,由节点在包转发的过程中动态完成转发表FIB和待定请求表PIT的构建。实验结果表明,该算法与DSP算法相比时延降低了35%,带宽利用率提升了29%,丢包率降低了17%,并且在请求命中率方面也具有显著优势。

关键词： sdn NDN 卫星网络路由算法

基于sdn/NFV的卫星互联网服务功能资源分配研究

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天地一体化信息网络 2022年第1期3卷 44-49页

作者：徐媚琳贾敏郭庆哈尔滨工业大学电子与信息工程学院黑龙江哈尔滨150006

软件定义网络和网络功能虚拟化能够有效解决大型网络难以管控、资源调度困难等问题。随着大规模卫星网络广泛应用,用户数量激增,对服务性能要求逐渐增加,这给网络管控和资源调度带来极大的负担,将软件定义网络的架构模型以及网络功能虚... 详细信息

软件定义网络和网络功能虚拟化能够有效解决大型网络难以管控、资源调度困难等问题。随着大规模卫星网络广泛应用,用户数量激增,对服务性能要求逐渐增加,这给网络管控和资源调度带来极大的负担,将软件定义网络的架构模型以及网络功能虚拟化等技术应用在大规模卫星互联网,可以有效解决目前存在的一些问题。提出基于sdn/NFV的新型卫星互联网架构,不同的卫星域可负责不同的功能,星间和域间可利用sdn和NVF进行有效协作,高效地利用网络资源,同时对其服务功能资源分配技术进行研究,优化VNF部署;提出基于资源感知的模拟退火算法,仿真结果表明此算法可以有效地降低服务功能链(SFC)数据流在传输时的端到端时延和带宽消耗,可以为用户提供更好的服务。

关键词：卫星互联网 sdn NFV SFC