Kronstrand, Alexander, Holmqvist, Andreas · KTH Publication Database DiVA (KTH Royal Institute of Technology) · 2015
Nowadays, optical fiber is widely used in several areas, especially in communication networking. The main reason is that optical fiber has low attenuation and high bandwidth. However, the switching functionality is performed in the electrical domain (inside the router), thus we have transmission delays in the network lanes. In this study we explore the possibility of developing a hardware “plug-in” that can be connected in parallel with routers of the network enabling the router with “plug-in” to let it bypass time-critical traffic. We researched different switching techniques for optical fibers and realized it would be an expensive endeavor to create one for a large number of wavelength/connections, thus, we scaled it down to prove the concept “plug-in” where we use fiber optical switches and Mux/Demuxes for our design. With our chosen optical components, we were able to bypass the routers (layer 3 switches) in our test environment and switch between different users to chose which one has the direct link. The conclusion can be drawn that it is possible to create such a “plug-in” which could be used by ISPs, to provide a faster lane to consumers with less modification of existing networks.
Cited by 0Open access
SpringerReference · 2011
Cited by 1
Wojciech Galuba, Šarūnas Girdzijauskas · Encyclopedia of Database Systems · 2009
Cited by 0
David Wonnacott, Barbara Chapman, James LaGrone et al. · 2011
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Wojciech Galuba, Šarūnas Girdzijauskas · Encyclopedia of Database Systems · 2016
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Vasilios Darlagiannis · 2005
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Khaled Ragab · 2007 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Workshops · 2007
Abstract Peer-to-Peer Overlay networks enabling an end-end application level-multicast service have drawn enormous attention. This paper proposes a self- organized <delta,mu >-Multicast Overlay Network (<delta,mu >-MON) that enables an efficient end-end application level multicast. The <delta,mu >-MON is organized into MON- Clusters, where delta is the maximum physical number of hops between any two end-nodes in each MON-Cluster. Thus, end-users accessing from different areas are able to broadcast data into each MON-Cluster within a constant delta physical number of hops. However in a dense-mode, increasing the size of MON-Clusters induces a long logical diameter that manifests high stress per physical links and high delay to disseminate data. Thus, this paper limits the expansion of each MON-Cluster within a specific logical diameter mu. Each MON-Cluster is constructed with at most logical hops over delta physical hops. Thus, end-users are able to efficiently disseminate data into each MON-Cluster within mu logical hops over delta physical hops with reasonable stress per physical links and bandwidth consumption.
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Georgios Smaragdakis · 2009
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Naoki Wakamiya And, Naoki Wakamiya, Masayuki Murata · 2005
Simultaneous overlay networks compete for network resources and disrupt each other. If they cooperate with each other, the collective performance can be improved and they can coexist comfortably. Taking inspiration from biology, in this paper we present a model of symbiotic overlay networks. Coexisting overlay networks dynamically evolve, interact with each other, and change their internal structures. Overlay networks in a symbiotic condition eventually establish the strong relationship and finally merge into one. We also evaluate the effect of interconnection of two overlay networks from the viewpoint of the robustness and the rate of message dissemination.
Cited by 0
Md. Moinuddin Bhuiyan · Figshare · 2021
Advances in wireless technology and mobile computing have provided a major impetus towards development of P2P network over MANET. Both peer-to-peer overlays and mobile ad-hoc network share the key characteristics of self-organizing and decentralization; both need to solve same fundamental problem, that is, how to route queries or packets efficiently. Congestion affecting the performance of P2P overlay on wireless ad-hoc network occurs not only due to buffer overflow but also due to error prone nature of the wireless medium used and the mobility of users. When paths of multiple downloading sessions intersect with each other, they mutually cause congestion for each other that result in packet drops. We identified that P2P MANET suffers query performance primarily due to significant congestion during download session. The unawareness of congestion in P2P MANET system may lead to the longer user response time, high overhead and many packet losses. In order to alleviate the congestion problem, we propose a modification to RAON, CANON, which includes congestion awareness for improving the RAON performance. We evaluated our system through simulation, which shows that CAON improves the performance of query success rate, query delay, packet losses significantly. We also evaluated the impact of mobility model on our system by simulating under both Random way point mobility model and Manhattan mobility model.
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Li Li, Mohammad Mahdian, Vahab Mirrokni · Lecture notes in computer science · 2006
Cited by 2
Naoki Wakamiya, Masayuki Murata · 2005
Simultaneous overlay networks compete for network resources and disrupt each other. If they cooperate with each other, the collective performance can be improved and they can coexist comfortably. Taking inspiration from biology, in this paper the authors presented a model of symbiotic overlay networks. Coexisting overlay networks dynamically evolve, interact with each other, and change their internal structures. Overlay networks in a symbiotic condition eventually establish the strong relationship and finally merge into one. The effect of interconnection of two overlay networks from the viewpoint of the robustness and the rate of message dissemination was also evaluated.
Cited by 24
Ibrahim Al‐Oqily, Ahmed Karmouch · Elsevier eBooks · 2010
Cited by 4
Feng Gu, Chongyang Xie, Min Peng et al. · IEEE Communications Letters · 2011
As applications continue to expand, there is a growing need to provide advance reservation scheduling for higher-end virtual overlay network services. Hence this work presents an optimization formulation for this problem and studies several heuristic solutions using network simulation.
Cited by 10
蕭惠珊, 盧寬儒, 曾信賓 · 2016
Cited by 0
Md. Moinuddin Bhuiyan · 2021
Advances in wireless technology and mobile computing have provided a major impetus towards development of P2P network over MANET. Both peer-to-peer overlays and mobile ad-hoc network share the key characteristics of self-organizing and decentralization; both need to solve same fundamental problem, that is, how to route queries or packets efficiently. Congestion affecting the performance of P2P overlay on wireless ad-hoc network occurs not only due to buffer overflow but also due to error prone nature of the wireless medium used and the mobility of users. When paths of multiple downloading sessions intersect with each other, they mutually cause congestion for each other that result in packet drops. We identified that P2P MANET suffers query performance primarily due to significant congestion during download session. The unawareness of congestion in P2P MANET system may lead to the longer user response time, high overhead and many packet losses. In order to alleviate the congestion problem, we propose a modification to RAON, CANON, which includes congestion awareness for improving the RAON performance. We evaluated our system through simulation, which shows that CAON improves the performance of query success rate, query delay, packet losses significantly. We also evaluated the impact of mobility model on our system by simulating under both Random way point mobility model and Manhattan mobility model.
Cited by 0Open access
Jin Tian, Haiyan JIN - · International Journal of Communications Network and System Sciences · 2009
This paper presents a method to model network delay for overlay network application. The network topology measurement technology and network AS information is used to build up model of network delay via AS and geographic distance. Based on global Internet measurement result, we calculated the parameters of the model. Furthermore, the model verification is done by comparing on AS-MMI protocol and HMTP protocol.
Cited by 2Open access
Eng Keong Lua, Xiaoming Zhou · 2007
Peer-to-Peer (P2P) overlay networks can be utilized to deploy massive Internet overlay services such as multicast, content distribution, file sharing, etc. efficiently without any underlying network support. The crucial step to meet this objective is to design network-aware overlay network topologies connecting all nodes that offer promising properties in terms of excellent communication quality. We exploit the underlying network locality and proximity of the nodes for overlay routing and node placement strategy. In this paper, we describe in greater specific details our network-aware SuperPeers-Peers geometric overlay network hierarchy and study its communication quality in a massive scale network environment. We evaluate our proposal using ten massive scale networks each consisting of 100,000 nodes. Our experimental results show high communication efficiency, quality and performance.
Cited by 12
Ranju Pant, Apinun Tunpan, Preechai Mekbungwan et al. · 2010
Wireless Mobile Ad-hoc Networks (MANETs) are characterized by frequent and unpredictable disconnections, due to mobility, interference, power management or any other issues. Such disconnections result in the failure of MANET routing protocols that are designed to establish end-to-end paths between the communicating nodes.
Cited by 10
Xun Duan, Jianshi Li · 2007
A problem of research on overlay network is lack of testing platform. Recent research has shown that one can use Distributed Hash Tables (DHTs) to build scalable, robust and efficient applications. However, large-scale distributed systems are hard to deploy, nor are DHTs . OpenDHT is a publicly accessible DHT service. In contrast to the usual DHT model, clients of OpenDHT can issue put and get operations to any DHT node, which processes the operations on their behalf. This paper introduces OpenDHT and concentrates on how to do the network testing based on OpenDHT. The testing about resource location is also expounded .
Cited by 7