Multicast can be done on link layer, IP layer, and application layer respectively. The application level overlay multicast is easier to deploy as compared to non overlay multicast but at the cost of efficiency. However, the utilization of these approaches is limited by current Internet architecture. Overlay and non overlay integrated solution have not yet been proposed for hybrid networks. In t...

This paper addresses the problem of building scalable semantic overlay networks. Our approach follows the principle of data independence by separating a logical layer, the semantic overlay for managing and mapping data and metadata schemas, from a physical layer consisting of a structured peer-to-peer overlay network for efficient routing of messages. The physical layer is used to implement var...

In this paper, we address the challenge of overlay topology design by considering which overlay topology best minimizes cost function, taking into account overlay link creation cost and routing cost. First, we formulate the problem as Integer Linear Programming (ILP) given a traffic matrix and assuming cooperative behavior of nodes. Then, we propose some heuristics to find near-optimal overlay ...

Several recently emerged Internet services make use of application-level or overlay networks. Examples of such services include overlay multicast, structured peer-topeer lookup services, and peer-to-peer file sharing. Many of these services could benefit from enabling participating end hosts to estimate their relative network locations within the overlay. In this thesis, we present PCoord, a pe...

Establishing an appropriate semantic overlay on Peer-to-Peer networks to obtain both semantic ability and scalability is a challenge. Current DHT-based P2P networks are limited in their ability to support semantic search. This paper proposes the DST (Distributed Suffix Tree) overlay as the intermediate layer between the DHT overlay and the semantic overlay. The DST overlay supports search of ke...

REsource LOcation And Discovery (RELOAD) is a peer-to-peer (P2P) signaling protocol that provides an overlay network service. Peers in a RELOAD overlay network collectively run an overlay algorithm to organize the overlay and to store and retrieve data. This document describes how the default topology plugin of RELOAD can be extended to support self-tuning, that is, to adapt to changing operati...

We report the first successful experiment on Point-toMultipoint (P2MP) VLAN path establishment on the overlay-model-based GMPLS-controlled wide area Ethernet. To support the overlay model, P2MP VLAN path signaling with egress output port indication is proposed and implemented. It is confirmed that our extended RSVP-TE software can correctly establish P2MP VLAN paths in the overlay-model network...

We address the question: What is the best way to construct a mesh overlay topology for multimedia content distribution, such that the highest streaming rate can be achieved? We model overlay capacity correlations as linear capacity constraints (LCC) and propose a distributed algorithm that constructs an overlay mesh which incorporates heuristically inferred linear capacity constraints. Our simu...

We previously demonstrated that collagen gel overlay induced cell remodeling to form lumen and apoptosis in Madin-Darby canine kidney cells. In the present study, we established that collagen gel overlay-induced apoptosis was initiated at areas exclusive of cell remodeling within 24 h (first phase) and extended into areas of cell remodeling within 48 h (second phase). Collagen gel overlay-induc...