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The ultimate success of the Wireless Mesh Network paradigm (WMN) in large scale deployments depends on the ability to test it in real world scenarios. A typical application scenario which is worth to be investigated in such a context is peer-to-peer traffic management. The creation of large scale testbeds for evaluating wireless mesh technologies and protocols, and for testing their ability to support...
When a content provider (CP) provides peer-to-peer live streaming service, routing decisions based on the knowledge of underlay traffic could lead to much better performance (such as user delay). On the other hand, if the Internet Service Providers (ISPs) provide underlay traffic information to the CP, their overall network cost due to routing inefficiencies could be reduced. There is hence incentive...
Emerging Peer-to-Peer (P2P) technologies have enabled various types of content to be efficiently distributed over the Internet. Most P2P systems adopt selfish peer selection schemes in the application layer that in some sense optimize the user quality of experience. On the network side, traffic engineering (TE) is deployed by ISPs in order to achieve overall efficient network resource utilization...
Unlike traditional routing schemes that route all traffic along a single path, multipath routing strategies split the traffic among several paths in order to ease congestion. It has been widely recognized that multipath routing can be fundamentally more efficient than the traditional approach of routing along single paths. aiming at the increasing network traffic and the deficity that the former Ant...
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...
Future Internet, Inherent Network Management (INM) and business aspects such as OPEX/CAPEX are topics of vivid research activity for quite some time. This paper focuses on the combination of the three areas, showing what is expected from recent Future Internet activities based on experience in the 4WARD project founded by the European Union. We briefly introduce the notion of INM and the related de-sign...
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...
Among the various options for implementing Internet packet filters in the form of Access Control Lists (ACLs), is the intuitive - but potentially crude - method of processing the ACL rules in sequential order. Although such an approach leads to variable processing times for each packet matched against the ACL, it also offers the opportunity to reduce this time by reordering its rules in response to...
The multimedia enriched transport supported by the Internet today continues to pose a challenge to engineers who attempt to provide QoS for its users. The popular method of using Diffserv solutions is typically too static to meet the mixed user traffic model. This paper introduces a novel user-centric approach of dynamically evaluating and policing incoming Internet flows to control the ratio of traffic...
One of the important concepts in MPLS Traffic Engineering (TE) is LSP setup routing. The objective of routing algorithm is to increase the number of accepted request and satisfying Quality of Service (QoS) constrains. Although much work has been done on laying MPLS paths to optimize performance, most has focused on satisfying bandwidth requirements as QoS constrains. The previously published research...
Open shortest path first (OSPF) is the most commonly used intra-domain Internet routing protocol. As the routes of paths are determined by basically only the link metrics, many paths may pass a link with small metric; therefore, there is high possibility that it causes the congestion of the link. It is essential that the number of the paths with large traffic in a link is limited to avoid a congestion;...
Aiming at improving the performance of relay transmission in multi-flow streaming overlay networks, a performance evaluation model to optimize the global weighted average latency was proposed. This model supports multiple senders and multiple receivers. A distributed heuristic allocation algorithm was proposed to optimize the transmission performance. In this algorithm, the bottleneck bandwidth shared...
Internet traffic is highly dynamic and difficult to predict in current network scenarios. This makes of traffic engineering (TE) a very challenging task for network management and resources optimization. We study the problem of intradomain routing optimization under this traffic uncertainty. Recent works have proposed robust optimization techniques to tackle the problem, conceiving the robust routing...
Peer-to-Peer (P2P) systems have gained much popularity over the past few years. P2P networks contribute a significant portion of the Internet traffic and cause increasing costs incurred by Internet service providers (ISP). Present P2P systems are generally selecting peers in random manner, regardless of the network cost, which generates much redundant traffic over the core network and congest the...
In recent years peer-to-peer (P2P) systems gain much attention. Growing popularity in P2P based protocol implementations for file sharing purposes caused that the P2P traffic exceeds Web traffic, once of the dominant traffic on the Internet. In fact of that, the use of P2P systems introduce many new problems related to traffic engineering or network optimization. In accordance to our previous works...
On-demand video delivery with a content delivery network (CDN) solely based on set-top-boxes has been introduced. In previous works, videos are separated into pieces and randomly stored in boxes, requests from clients being redirected to the nearest boxes. However, random strategy may lead to some costly and inefficient allocation. For example, a video part could be placed much further than other...
Open shortest path first (OSPF) is a dynamic and inter-domain routing protocol with hierarchical architecture used in Internet networks routing. Area border router (ABR) had been proved to be an effective solution to the complicated network and scalability problem. Obviously, manual selection of ABR can not satisfy the dynamic change in the network load. A new scheme, based on the traffic engineering...
In recent years application-level networking (e.g. overlay networks, P2P networks) has become key enabling architecture for supporting distributed services on the Internet. We consider overlays to have delay and cost requirements and thus there exists an optimal distribution of the overlay traffic (the service engineering problem) across multi-domain underlay networks such that these requirements...
We have currently reached a phase where big shifts in the network traffic might impose to rethink the design of current architectures, and where new technologies, being pushed into market, will act as enabler of such changes. Taking into account the current scenario and its likely evolution as well, in this paper we examine the case for multi-path routing within the metropolitan access network. Through...
In a wireless mesh network, the traffic is aggregated at mesh router and most of them forwarded towards the Internet through GW (Internet gateway). Thus easily leads to a bottleneck for network performance at GW. Aimed to this problem ,we firstly treated the GW and mesh router as the alike node equivalently. Then used the logarithm-normal distribution model of shadow affect in wireless communication...
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