Cluster-Based Autoconfiguration for Mobile Ad hoc Networks

IP address autoconfiguration of mobile nodes is highly desirable in the practical usage of most mobile ad hoc networks (MANETs). This paper proposes cluster-based autoconfiguration, a novel approach for the efficient address autoconfiguration of MANETs. The cluster structure derived from clustering techniques is used to manage address assignment and conflict resolution. By introducing the concept of virtual address agents (AAs), the proposed approach can be applicable to many existing clustering protocols. Finally, analysis and simulation demonstrate that the proposed scheme outperforms the previous autoconfiguration approaches.

Domain‐based autoconfiguration framework for large‐scale MANETs

IP autoconfiguration of the mobile node addresses is important in the practical usage of most mobile ad hoc networks (MANETs). This paper proposes domain‐based autoconfiguration framework (DACF), a novel approach for the efficient address autoconfiguration of MANETs. To construct a hierarchy of addresses, this framework defines a loose domain structure where nodes in the same domain may roam to different locations after they are configured. This framework uses the passive Duplicate Address Detection(PDAD) but the proposed domain structure is able to reduce the initial conflict probability and accelerate the conflict resolution significantly. To evaluate the correctness and efficiency of the proposed framework, we also present an exemplified full‐functioned implementation of the proposed framework. Through the detailed analysis and simulation, we believe the proposed scheme provides a promising autoconfiguration framework for large‐scale MANETs. Copyright © 2008 John Wiley & Sons, Ltd.     

Spanning-tree based autoconfiguration for mobile ad hoc networks

In order to allow truly spontaneous and infrastructureless networking, autoconfiguration algorithm is needed in the practical usage of most mobile ad hoc networks (MANETs). This paper presents spanning-tree based autoconfiguration for mobile ad hoc networks, a novel approach for the efficient distributed address autoconfiguration. With the help of the spanning tree, the proposed scheme attempts to distribute address resources as balanced as possible at the first beginning. Since each node holds a block of free addresses, a newly joining node can obtain a free address almost immediately. Subnet partitioning and merging are well supported. Finally, analysis and simulation demonstrate that our algorithm outperforms the existing approaches in terms of both communication overhead and configuration latency.     

ad hoc网络地址自动配置技术研究

针对ad hoc网络的地址自动配置问题,介绍了该领域研究现状和最新进展,以及有代表性的配置机制的配置思想和实施方法,比较了各配置机制的相关性能,在此基础上给出了结论.     

Mobile ad hoc networks - current approaches and future directions

Most research efforts in the area of MANETs focus on developing efficient routing protocols. Although routing protocols assume unique node addresses, the question of how to provide them remains open. In order to allow truly spontaneous and infrastructureless networking, a protocol for dynamic allocation of unique addresses is needed. Recently, various address autoconfiguration protocols for MANETs have been proposed. This article gives an overview of the challenges of address autoconfiguration in MANETs, presents current approaches, and discusses their advantages and drawbacks.     

对IPv6网络安全接入问题的研究

本文提出了一种新的IPv6网络安全接入方案.文中首先介绍了IPv6网络安全接入所要解决的问题以及现有解决方案,然后在详细分析IPv6地址自动配置过程的基础上,提出了一种新的基于认证的IPv6地址自动配置方案,以解决IPv6网络安全接入问题,并对其中涉及到的关键问题进行了详细讨论,提出了一些切实可行的方法.接着,论述了本方案的突出优点,证实了本方案是能够从源头上解决IPv6网络安全接入问题的轻量级方案,非常适合应用于未来的无线网络中.最后,对本方案的应用前景进行了展望.     

Agent-Based Passive Autoconfiguration for Large Scale MANETs

The autoconfiguration algorithm of the mobile node addresses is important in the practical usage of most mobile ad hoc networks (MANETs). The passive Duplicate Address Detection (PDAD) protocols can detect address conflicts in a passive manner and thus have very low protocol overhead. However, the blindly random assignment algorithm used in PDAD leads to a high initial conflict probability. In this paper, we propose a novel concept of address agent, based on which arises a novel autoconfiguration approach, to obtain the least address conflict probability. Most features of PDAD are inherited, e.g., address conflicts are still detected in a passive manner based on anomalies in routing protocol traffic. Analysis and simulation show that our algorithm outperforms existing methods.     

A lightweight stateful address autoconfiguration for 6LoWPAN

Sensor networks have become increasingly important in various areas, and most current applications require connectivity between sensor networks and the Internet. By being seamlessly integrated into IP network infrastructure, sensor network applications would benefit from standardized and established technology, as well as from the plethora of readily available applications. Preparing sensor networks for IP communication and integrating them into the IP network, however, present new challenges on the architecture and its functional blocks, e.g., the adaptation of the respective link technology for IP support, development of security mechanisms, and autoconfiguration to support ad hoc deployment. In this paper, we focus on the IPv6 address autoconfiguration issue and propose a proxy-based autoconfiguration protocol. The proposed protocol guarantees the assignment of a unique address to each node in the network. The protocol is simulated and implemented on off-the-shelf sensor network platforms. The experiment results show that our mechanism outperforms similar network address configuring mechanisms in terms of latency and overhead.     

基于6LoWPAN的物联网寻址策略研究

在6LoWPAN (IPv6 over Low-power Wireless Personal Area Network)的基础上,该文提出应用于物联网的寻址策略,实现基于IEEE 802.15.4协议的底层异构网络与互联网的实时通信。寻址策略包括IPv6地址自动配置和报头压缩。采用的分层地址自动配置策略,首先在底层网络内部允许节点使用16位短地址导出的链路本地地址进行数据分组传输,该链路本地地址需通过执行基于分簇的重复地址检测机制保证唯一性;其次,每个底层网络中的Sink节点通过上层IP路由器获取全球路由前缀,并与接口标识符相结合,形成Sink节点的全球地址,实现底层网络与互联网的数据交换。同时,通过在报头压缩编码中植入链路本地地址和全球地址控制位,提出了一种适用于物联网应用的报头压缩方案IIPHC (IoTs IPv6 Header Compression)。如果地址类型为链路本地地址,则采用简单灵活的IIPHC1方案,如果地址类型为全球地址,则采用相对复杂但有效的IIPHC2方案。仿真及测试结果表明,基于6LoWPAN的物联网寻址策略在网络开销、时延、吞吐量、能耗等性能方面存在一定的优越性。     

RAA: a ring-based address autoconfiguration protocol in mobile ad hoc networks

The problem for dynamic IP address assignment is manifest in mobile ad hoc networks, especially in 4G all-IP-based heterogeneous networks. Existing solutions are mainly riveted to decentralized algorithms, applying a large number of broadcast messages to (1) maintain available IP address pools and (2) ensure no address duplication occurring. In this paper, we propose a ring-based address autoconfiguration protocol to configure node addresses. This work aims at the decentralized ring-based address autoconfiguration (DRAA) protocol, which has the advantage of low latency, low communication overhead and high uninterruptible connection. The DRAA protocol is a low-latency solution because each node independently allocates partial IP addresses and does not need to perform the duplicate addresses detection (DAD) during the node-join operation. Communication overhead is significantly lessened in that DRAA protocol uses the logical ring, thus utilizing fewer control messages solely by means of uni-cast messages to distribute address resources and to retrieve invalid addresses. Furthermore, if duplicate addresses are shown at network merging, the DRAA protocol checks the number of both TCP connections and of nodes to allow duplicate nodes to rejoin the smaller network so that lost connections are fast re-connected. To improve communication overhead and provide the evenness of address resources, the centralized ring-based address autoconfiguration (CRAA) protocol is discussed. The CRAA protocol reduces larger numbers of broadcast messages during network merging. The other contribution is that our CRAA protocol also has an even capability so that address resources can be evenly distributed in each node in networks; this accounts for the reason our solution is suitable for large-scale networks. Finally, the performance analysis illustrates performance achievements of RAA protocols. The simulation result shows that the DRAA protocol has the shortest latency, that the CRAA protocol has the capability to evenly distribute address resources and that both of DRAA and CRAA protocols are the good solutions which achieve low communication overhead and high uninterruptible connection.     

PACMAN: passive autoconfiguration for mobile ad hoc networks

Mobile ad hoc networks (MANETs) enable the communication between mobile nodes via multihop wireless routes without depending on a communication infrastructure. In contrast to infrastructure-based networks, MANET's support autonomous and spontaneous networking and, thus, should be capable of self-organization and -configuration. This paper presents passive autoconfiguration for mobile ad hoc network (PACMAN), a novel approach for the efficient distributed address autoconfiguration of mobile ad hoc networks. Special features of PACMAN are the support for frequent network partitioning and merging, and very low protocol overhead. This is accomplished by using cross-layer information derived from ongoing routing protocol traffic, e.g., address conflicts are detected in a passive manner based on anomalies in routing protocol traffic. Furthermore, PACMAN assigns Internet protocol (IP) addresses in a way that enables their compression, which can significantly reduce the routing protocol overhead. The performance of PACMAN is analyzed in detail based on various simulation results.     

ND++ – an extended IPv6 Neighbor Discovery protocol for enhanced stateless address autoconfiguration in MANETs

Recent trends in information and communications technologies are oriented toward the design of the Future Internet and the Internet of Things. While IPv6‐based mobile ad hoc networks (MANETs) are emerging as an important building block of these new technologies, it is necessary to come up with adequate self‐configuration capabilities allowing for seamless and automated configuration of addresses in mobile environment. The mechanisms of stateless address autoconfiguration proposed for IPv6 networks are supposed to automate some configuration steps; however, they would need to be aligned with the requirements imposed by MANET networks. Therefore, in this article, we present Neighbor Discovery ++ – an extended IPv6 Neighbor Discovery protocol for enhanced duplicate address detection in MANETs, which provides increased coverage of network nodes, while minimizing protocol overhead. It exploits efficient flooding mechanism on the basis of the multipoint relay concept, which makes it an interesting approach also for large‐scale networks. Trials performed on the designated real‐world testbed platform indicate that ND++ is a promising solution to support efficient address autoconfiguration in MANETs. Copyright © 2012 John Wiley & Sons, Ltd.     

MANET主机安全自配置协议研究

提出一种基于IPv6的安全地址自配置方案SMAAC(Security MANET Address Auto-Configuration),新节点以口令方式通过节点验证服务器的验证后,由该服务器发放节点授权票据,由邻居节点进行授权票据检验并根据相关硬件信息产生IPv6地址,并完成地址冲突检测,保证网络内节点身份合法性.最后对该方案进行了安全及性能分析与仿真.     

IPv6的地址结构特点与管理机制分析

本文主要介绍了有关IPv6互联网的网络地址结构及其管理机制。与现行的IPv4地址相比,IPv6在地址的长度、分类方法、表示方法和类型等方面均不同相同。它可有效地解决IP地址枯竭与路由效率低下的问题,同时具有地址聚类性、多播性、任播性和接口多址性等特点;而在IPv6地址管理方面则采用层次化路由选择策略,支持QoS路由协议,将地址解析通过领导发现协议来实现,新增了无态地址的自动配置,使得网络地址的重新编号变得更加简单快速。最后通过模拟仿真的方法,进一步分析说明了IPv6网络的性能。     

基于IPv6的网络传感器路由技术研究

在IPv6（Internet Protocol vision6）的地址结构中定义了一段新的IP地址,将这些IP地址作为每个传感器的标识IP地址。在mobile IPv6的基础上,提出了传感器的转交地址配置方法,即手动配置方法和mobile IPv6中的无状态自动地址配置方法,通过转交地址和标识地址的“完全绑定”来实现数据报的路由。最后给出了基于IPv6的传感器网络的网络结构。解决了传感器在计算机网络中相互区别的问题,并通过转交地址在传感器与计算机之间建立无缝连接,使计算机和传感器之间的数据报实现最优的直接传递。     

基于Linux平台的DNS服务器容错

在互联网中客户端都是采用域名的方式访问站点,域名到IP地址的映射由DNS域名解析服务器完成,一旦DNS域名解析服务器发生故障,将直接导致网站无法访问.LINUX是继UNIX功能的一种集安全性和高稳定性一体的开源和免费的操作系统.使用LINUX操作系统构建DNS域名解析服务器,通过使用区域传输来构建辅助DNS,能加强互联网站点的域名解析的安全性和容错功能.     

信息名址与移动域名解析过程探讨

信息名址是加快移动互联网发展的一个有效的途径,而移动域名能够让用户更快、更好地体验互联网带来的便捷。本文介绍了手机终端通过短信、彩信或WAP方式访问信息名址或移动域名时,信息名址解析平台是如何对其进行解析服务的。     

移动自组网的单播地址自动分配方案

移动自组网（MANET）是无固定基础设施的无线网络,具有多跳、拓扑结构动态变化、带宽、能量有限等特点。因此常规的地址配置方案,如动态主机配置（DHCP）并不适于MANET。MANET中的节点可以借助IPv6的自动配置机制,利用MAC地址或随机号来自动配置其地址。丈中对几种基于IPv6的MANET单播地址自动分配方案进行了讨论,从地址唯一性、简单性、适应性、健壮性等方面进行了综合比较。对移动自组网的地址分配方案提出了一些建议,并指出了进一步研究的问题。     

Autoconfiguration Management für Feldbusse — PROFIBUS Plug & Play

This article presents an autoconfiguration (ACFG) management framework for the realization of self-configuring fieldbus systems. After an introduction and a discussion of the requirements, an overview of the functions is given. The ACFG management framework contains proposals for protocol functions which, for example, realize an automatic solution for address conflicts or the automatic setting of the system’s bus parameters. Positive practical experience has already been gained during laboratory tests with PROFIBUS-DP.