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Abstract: Mobile Ad hoc NETworks (MANETs) are infrastructure-free, highly dynamic wireless networks, where central administration or configuration by the user is very difficult. In hardwired networks nodes usually rely on a centralized server and use a dynamic host configuration protocol, like DHCP [Droms et al. 2003], to acquire an IP address. Such a solution cannot be deployed in MANETs due to the unavailability of any centralized DHCP server. For small scale MANETs, it may be possible to allocate free IP addresses manually. However, the procedure becomes impractical for a large-scale or open system where mobile nodes are free to join and leave. Most of the autoconfiguration algorithms proposed for ad hoc networks are independent of the routing protocols and therefore, generate a significant overhead. Using the genuine optimization of the underlying routing protocol can significantly reduce the autoconfiguration overhead. One of the MANET protocols which have been promoted to experimental RFC is the OLSR routing protocol [Jacquet et al. 2003], on which this article focuses. This article aims at complementing the OLSR routing protocol specifications to handle autoconfiguration. The corner stone of this autoconfiguration protocol is an advanced duplicate address detection algorithm.

Abstract — Real-time applications are going to play a major role in Vehicular Ad-hoc Networks (VANETs). In this context, nodes ’ IP addresses need to be automatically configured in a very small time and with a reduced need for re-configurations. Due to the very high mobility of vehicles, however, traditional mechanisms for address auto-configuration fail to perform well. Aimed at solving this problem, we propose a novel Leader-based scheme that exploits the topology of VANETs and a distributed DHCP service to guarantee fast and stable address configuration. Keywords: Ad-hoc networks, VANET, address configuration. I.

Vehicular networks are characterized by unique properties and challenging problems. The high mobility and density of nodes impede the direct utilization of traditional techniques and protocols in this context. In particular, automatic IP address configuration in vehicular ad-hoc networks is a challenging and as yet unexplored issue. The importance of this problem cannot be overemphasized since any application that involves communication between two or more nodes requires the presence of unique identifiers to deliver the data to the right destination. Due to the very high mobility of vehicles, traditional mechanisms to automatically associate an IP address to a wireless node fail to perform well. To solve this problem, we propose a novel scheme that exploits the topology of vehicular ad-hoc networks and an enhanced DHCP service with dynamically elected leaders to guarantee reliable and fast address configuration. We provide extensive simulation results that demonstrate the efficacy of our scheme. Keywords: Ad-hoc networks, VANET, address configuration. I.

U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation thereon. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Laboratory or the U.S. Government. ABSTRACT 1 Configuration management is critical to correct and efficient operation of large networks. Where the users and networks are dynamic and ad hoc, manual configuration quickly becomes too complex. The combination of the sheer number of nodes with heterogeneity and dynamics makes it almost impossible for the system administrator to ensure good configuration or even correct operation. To achieve the vision of pervasive computing, nodes must automatically discover their environment and self-configure, then automatically reconfigure to adapt to changes. Protocols such as DHCP, DDNS, and mDNS provide some degree of host autoconfiguration, but network administrators must still configure information such as address pools, routing protocols, and OSPF routing areas. Only limited progress has been made in automating the configuration of routers, servers, and network topology. We propose the first unified attempt to combine both self-configuration of much of the host, router, and server information with automatic generation and maintenance of hierarchy under the same algorithmic framework. Testbed implementations show the approach is practical, while simulations reveal its scalability, rapidity, and efficiency with respect to network performance.

protocol for a multiple interfaces OLSR network

Abstract—Internetworking the mobile ad-hoc networks (MANETs) with the Internet has been a hot issue for many years. However, most researches have been concentrated on the use of MANETs as the access networks for the Internet. This paper introduces another use of MANETs: backup or load-balancing transit networks for the Internet. Although the MANETs capacity is currently low compared with other backbone technologies, we argue that MANETs is a suitable alternative for backup or load-balancing transit networks of the Internet based on its self-organized infrastructure-less multi-hop architecture and its increasing capacity in the near future. To provide the backup or load-balancing transit services for the Internet, a scalable, stable, lowoverhead, QoS-support ad-hoc routing architecture with the address auto-configuration is required. Moreover, how an

Abstract: Several data-centric communication paradigms have been proposed in the domain of Wireless Sensor Networks (WSN). Therefore, the principles of operation and maintenance in such networks are changing to control massively distributed systems. Previous addressing schemes fail or produce too much overhead if only locally unique addresses of sensor nodes are required. In this paper, we present a dynamic address allocation scheme for localised address assignments in WSN. We developed a round-based address assignment with subsequent duplicate address detection that operates in a self-organised manner. It inherently allows busy-sleep periods and does not assume always awake nodes. To verify the approach, we implemented the algorithm on Mica2 sensor motes and tested it in a WSN maintenance scenario. The results demonstrate that our method works well for operation and maintenance of WSN without prior address assignments.

Adres autoconfiguratie in ad hoc netwerken

Abstract—Wireless mesh networks (WMNs) are comprised of nodes with multiple radio interfaces and provide broadband residential internet access or connectivity to temporal events. Our goal is to simplify the network deployment of such a mesh network, and towards that we are presenting procedures for automatic configuration and optimisation of the network. We first present an architecture framework that supports the integration of key mechanisms to ensure the optimisation of the performance of a wireless mesh network. Secondly, we present three key mechanisms, namely autoconfiguration, channel assignment and quality of service (QoS) enforcement based on QoS routing. We provide a method for automatic mesh start-up, joining a node into an existing mesh network and automatic repair of temporary connectivity outage, targeting at simplifying the node configuration as much as possible. The second mechanism supports an efficient algorithm for joint channel selection and topology control, supporting different target objective expressed as utility functions. The third mechanism supports QoS, by allowing routing and admission control decisions, in order to ensure that all flows are handled with the demanded QoS. Finally, we give some simulation results that show the increased performance of our framework. Index Terms—Wireless Mesh Networks, channel selection, topology control, automatic configuration, quality of service, routing, admission control. I.