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With the increasing popularity of cloud computing, the huge amount of energy consumed by data centers has gained much attention. Current proposals address the energy efficiency problem by two major methods: optimizing the allocation of physical servers and network elements (routers or switches). In order to improve resource utilization and minimize the energy consumption, the former method focuses...
MTC services are undergoing rapid increase; billions of MTC connections can be anticipated in a few years. When supporting MTC services in telecommunications networks, MTC traffic characteristics and its unique service requirements should be exploited in order to optimize resource utilization and offer satisfactory service quality for all devices. In this paper, we present an Information-Centric Virtual...
We present a reconfigurable dragonfly architecture for High-Performance-Computing (HPC) systems leveraging optical-circuit-switching. An SDN control plane monitors network traffic characteristics and optimizes the connectivity. Software-controlled reconfiguration of the optically interconnected topology is experimentally demonstrated.
Cloud computing not only requires high-capacity data center networks to accelerate bandwidth-hungry computations, but also causes considerable power expenses to cloud providers. In recent years many advanced data center network architectures have been proposed to increase the network throughput, such as Fat-Tree <xref ref-type="bibr" rid="ref1"> [1]</xref> and BCube...
There is a growing trend for service providers (SPs) to migrate their multi-tier applications from local clusters to public cloud networks. In the cloud environment, it is a great concern of SPs to improve the availability of their virtual networks, in addition to guarantees of their virtual resource requirements, such as VMs and bandwidth. However, meeting these requirements results in an inefficient...
Information-Centric Networking (ICN) provides substantial flexibility for users. One of the most important features of ICN is the universal in-network caching. The characteristics of ICN make it substantially different from traditional caching systems. In this paper we propose an age-based cooperative caching scheme in response to the special characteristics of ICN. We leverage the coupling between...
Cloud-based big data platforms are being widely adopted in industry, due to their advantages of facilitating the implementation of big data processing and enabling elastic service framework. Alongside with the widespread adoption of cloud-based MapReduce frameworks, a series of solutions have been proposed to improve the performance of big data services over cloud. Majorities of the existing studies...
Content Centric Networking (CCN) is a new emerging network architecture, shifting from an end-to-end connection to a content-centric communication model. A number of content-oriented characteristics, such as name-based routing, arbitrary topology and ubiquitous caching make caching in CCN different from the previous works. In this paper, we focus on the collaborative caching in CCN and propose a dominating-set-based...
Today's data center networks consume a great amount of energy, which significantly aggravates the operational cost of data centers and the carbon footprint. It is an ideal objective for operators to make the power consumption of data center networks proportional to the amount of network loads they carry. To this end, many recent researches are focusing on two representative methods: device-level sleeping...
Peer-to-peer (P2P) network topology measurement is the foundation for research of p2p network sharing behavior pattern and network resources dynamic distribution. To BitTorrent (BT) network, we present an active measurement method of network topology. Firstly, using seed crawler get entire BT network's seeds, then through analyzing every seed to get tracker servers' information, after that, BT crawler...
This article analyzes network management system based on C/S and B/S architecture. Incorporating with advantages of two types of architecture, a design idea is brought up for building a network management system based on J2EE and RIA technology. Major common functions for network management system are designed and realized through research and analysis of data transmission mechanism among each layer...
Due to the mobility of nodes, servers and clients, the reliability of service delivery over MANETs is a major concern. Traditional route discovery based method is to predict and detect breakdown of connectivity and try to find an alternative path from the client to the same server (We call it traditional rerouting method). The introduction of service delivery platform over MANETs enables and facilitates...
In this paper, we proposed a broad family of interconnection networks, denoted as Petersen-Gaussian(PG) networks, based on well-known Petersen network and Gaussian network. And the new networks include part of previously proposed Peterson-torus networks. Firstly, we extend the degree of Gaussian network from 4 to 10, and then set Petersen network as modules on grid points of the extended Gaussian...
The features of P2P networking architecture can contribute to robustness and scalability, however, it also introduces network-oblivious traffic, which brings big pressure to the ISPs. Meanwhile, since traffic of P2P applications occupies much of bandwidth in bottleneck links, non-p2p applications may be severely harmed due to lack of bandwidth. To conquer this problem, previous works mainly focused...
Because existing simulator can't meet the need of the P2P streaming system, we research and design a P2P streaming simulator called P2PMedSim. Our simulator comes with a rich set of join, duration, and bandwidth distributions as well as overlay metrics. It has good visual interface and supports C/S model, tree model, and mesh model. The simulator design is introduced in details. Furthermore, we compare...
In this paper, we propose and study how to provide multipath cross-layer service discovery (MCSD) for mobile ad hoc networks (MANETs). Cross-layer service discovery integrates service discovery into route discovery by taking advantage of network-layer topology information and routing message exchange. Multipath service discovery differs from multipath routing in that multipath service discovery can...
In this paper we address the optical grid network (OGN) construction issues in a large-scale multi-domain wavelength switched optical network (WSON). Based upon user's needs for high-performance distributed computation, a group of lightpaths are established dynamically among the distributed computer resources forming an on-demand application-oriented communication environment. We propose an optical...
In this paper we address future grid systems built in a large scale interconnected wavelength switched optical network. According to users needs on high performance distributed computation, a group of dedicated lightpaths among the distributed computer resources forming the users on-demand optical grid networks are established dynamically. To construct optical grid networks automatically in a distributed...
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