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With the rapid development of Internet, it has become an essential infrastructure for communication today, while the IP layer has a poor ability in fast failure recovery, which impending the improving of the Internet performance. Concerned to the single link failure problems, this paper proposed a fast link failure recovery mechanism based on multi-topology. Firstly, by theoretical analysis, the number...
This paper proposes a novel method to characterize unwanted email traffic. Research object is a significant, diverse, and representative set of Internet email traffic, The email session we choose is based on an extended deterministic finite automata (EFSA) model, then choose some parameters to capture email traffic characterization. The method is applied to two different volumes of email traffic data...
Research in large-scale distributed systems, such as P2P systems, often relies critically on simulations to validate research results. Though systems such as PlanetLab can be used to test on real networks in some cases, there are still significant practical challenges to evaluating large-scale distributed systems on actual hardware. Actual measured datasets such as the ones measured with King's method...
In the highly connected Internet most of domains have more than one interconnection link to different providers. In such a multi-homed scenario destinations for inter-domain traffic may be reachable through multiple egress routers with different offered cost and path performance. In this paper, we address the problem of route selection in a multi-homed stub network to optimize transit costs and paths...
Transit traffic exchanged with transit providers costs more for network providers compared to intra-domain traffic or traffic exchanged over peering links. We have measured and analyzed the peer distribution in BitTorrent, which is one of peer-assisted content delivery networks (CDNs). From the peer distribution, we show the potential of the high-cost transit traffic reduction. We then propose a peer...
We consider wireless mesh networks where some of the wireless routers also play a role of gateways to the internet. The assumed cognitive ability of the routers' radios is a cost efficient manner to increase available bandwidth but requires an adaptive bandwidth management mechanism to deal with dynamics of primary users' activities. To cope with this issue we propose an economic framework for adaptation...
The paper presents a proposal of a new multicast routing algorithm for finding a multicast tree in packet-switched networks. The objective of the MLRA (Multicast Routing Algorithm with Lagrange Relaxation) is to minimize the cost of paths between the source and each destination node using Lagrange relaxation, and eventually, minimize the total cost of multicast tree. A wide range of simulation experiments...
Overlay routing is an application-level routing mechanism and existing research has revealed that overlay routing can improve user-perceived performance. On the other hand, overlay routing may harm the ISPs' cost structure because of the policy mismatch between IP routing and overlay routing. In a previous study, we proposed a method to reduce inter-ISP transit cost caused by overlay routing while...
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...
Research and discussion on the Internets addressing and routing scalability problems has been for more than a decade. IP aware growing population, and learned needs in terms of site multi-homing, traffic engineering, non-aggregatable address allocations and policy based routing have resulted in the continuous alarming growth of the routing tables in the Default Free Zone (DFZ). Constraints posed by...
The rapid development of network technology in particular the widely use of the internet based on TCP/IP protocol, affects the way people work, learn and live greatly. Network's business value and importance increases as people get more dependent on network. Every walk of life's development and various activities of the word are inseparable from the Internet. However, as the telecommunication operation...
IPTV is defined as multimedia services delivered over IP based networks. This can be performed using the PIM-SM multicast routing architecture which enable IP multicast routing on existing IP networks. The RP is required for network running PIM-SM, and the RP location changes the efficiency of multicast data packets. In general, the PIM-SM is consisted of a shared tree for keep-alive packets and a...
This paper presents a trust-based QoS management implementation to assure trust and security of the IP network. In this architecture, every IP packet is forwarded and queued by its trust-value, which is the quantification of the network's expectation of this packet's behavior in networks. We also outlined the deployment of the trusted routers which carry out this algorithm. At last we provide the...
Analyzed the features of router-level topology simulation, and proposed an algorithm HRSA facing router-level network topology simulation based on Dijkstra algorithm aiming at actual Internet stratified topology structure. By the way of adding the shortest routing table on the core router, the time of searching the shortest path in router-level topology simulation has been reduced effectively. The...
The following topics are dealt with: graph theory; topology; internet routing; wireless network performance; internet trust; security; neutral access network; optical access network; nextaccess; and mobile network.
A new multi-paths routing algorithm has been proposed in this paper, which can solve the problem of congestion caused by overloads of links and provide a better environment compared with the traditional networking technologies. This methodology will call the routing mechanism when the links appear overloads, and it can adopt alternative path or multi-paths to complete data transmission to reduce congestion...
In order to become truly ubiquitous, the Internet of Things (IoT) has to evolve to provide connectivity anytime, any place, for any thing. IEEE 802.15.4-based wireless personal area networks (WPANs) is a preferable communication method for IoT. Wireless personal area networks (WPANs) are used to convey information over relatively short distances. Connections effected via WPANs involve little or no...
Applying WSN (wireless sensor networks) technology to the fire safety can actualize wireless requirement, network, and intelligent fire monitoring. A wireless fire detection system based on WSN was described in the thesis, which can acquire data of temperature and smoke concentration. Fire detection nodes using SOC CC2430 as the control unit to realize the communication between nodes, the software...
In large Internet backbones, Service Providers typically have to explicitly manage the traffic flows in order to optimize the use of network resources. This process is often referred to as Traffic Engineering (TE). Common objectives of traffic engineering include balance traffic distribution across the network and avoiding congestion hot spots. Raj P H and SVK Raja designed the Bayesian network approach...
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