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In this paper we propose a Packet-based measurement technique called Floating IP Active Measurement (FIPAM) that utilizes routing loop to measure Delay and Throughput in IP networks. Calculating these parameters in multi-provider and complex networks like Internet has became a challenge as most of current active measurement tools relying on ICMP and majority of today's networks block ICMP traffics...
The update process in an IP router after a failure is detected, is a complex process involving more than just recalculating shortest paths. When statistics related to forwarded traffic are not taken into account, which is generally the case, we show that packet loss can be significantly higher than is strictly needed. In this paper we present a combined control and traffic-driven routing table update...
Monitoring the end-to-end Quality-of-Service (QoS) is an important work for service providers' Operation Support System (OSS), because it is the fundamental requirement for QoS provisioning. However, it is in fact a challenging work, and there are few efficient approaches to address it. In this paper, for multi-protocol label switching (MPLS) virtual private networks (VPNs), we propose a queuing model...
Topology management protocols play an important role in WSNs, managing the sleep transitions of the nodes to make data transmissions occur in an energy-efficient way, thus prolonging network lifetime. However, classical topology management protocols are not suitable for real-time WSNs, as they may introduce unbounded delays. In a previous work, we presented a static topology management protocol specifically...
This paper investigates the stability characteristics of overlay networks performing switching between multiple virtual paths. A global stability condition for switched-control-systems has been applied to overlay path switching frequency, that can be incorporated into design of better routing protocols for overlay networks. Further, NS-2 based simulations have been carried out on an overlay network...
Local monitoring has been demonstrated as a powerful technique for mitigating security attacks in multi-hop ad-hoc networks. In local monitoring, nodes overhear partial neighborhood communication to detect misbehavior such as packet drop or delay. However, local monitoring as presented in the literature is vulnerable to an attack called misroutingattack. Packet misrouting disrupts the packet from...
A Mobile Ad hoc Network (MANET) is a transitory, dynamic, decentralised, self-organised and infrastructure-less network. This unique nature introduced new challenges in the security research field such that it became imperative to design new security mechanisms that suit these characteristics. The proposed work contributes to the problem of securing data forwarding in the network layer; this is accomplished...
We investigate adaptive routing in ad-hoc networks of mobile robots with an application of geographical cells. We show that the concept of geographical cells introduce an efficient information management system in ad-hoc networks of mobile robots. As compared to other existing ad-hoc routing concepts, geographical cell routing shows superiority in terms of delay, delay jitter and delivery ratio. Since...
A principal factor in sensor network design is energy efficiency. In this work, we propose to extend the lifetime of sensor networks using appropriate choice of sensor node distribution. The key idea of our scheme is to deploy more nodes in areas of extensive energy usage. Using this scheme of sensor node distribution, we use probabilistic angular routing to route data packets from the sensor nodes...
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