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In this paper, we focus on the topic of dynamic routing of multicast sessions in WDM networks. We consider a multilayer optimization problem that combines two approaches - optimization of an overlay (application) multicasting and next provisioning of created overlay multicasting tree as a set of unicast demands in the underlying WDM network. Moreover, we address our problem with the survivability...
Streaming services have been gaining much popularity in the Internet. The widespread adoption of broadband residential access enables individual users to use new bandwidth demanding services. Peer-to-Peer (P2P) multicasting approach using an overlay network to provide communication between peers is a valuable proposal for streaming since it provides rapid deployment at relatively low cost. Most of...
Concepts of network virtualization and overlays are nowadays gaining much popularity and are perceived as key approaches for future Internet. One of possible applications used in overlay networks is live streaming based on Peer-to-Peer (P2P) multicasting. This paper deals with the problem of overlay networks dimensioning. In the problem-formulated as an Integer Program - access link capacities are...
This work focuses on the problem of survivable network design with simultaneous unicast and anycast flows. The motivation for this problem is twofold. First, in recent years we can observe an increasing popularity of network services using anycast flows (e.g. content delivery networks (CDN), domain name service (DNS), peer-to-peer (P2P)) systems. Second, current users require reliable network services,...
At the present time there are many Peer-to-Peer (P2P) multicasting systems supporting live streaming, i.e. real-time dissemination of various content issued at a source node towards a set of receivers. The objective of content distributing can be twofold: maximization of the system throughput (i.e. the streaming rate) and minimization of the streaming cost while guaranteeing the particular streaming...
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...
Grid structures are increasingly considered as very convergent with peer-to-peer networks. This paper presents a model of network acting both as grid and peer-to-peer network, used for data computation and distribution. Presented PPLC algorithm is a complete solution for both grid and peer-to-peer points of view. Problem formulation is presented, as well as solution heuristic algorithm and research...
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