Future internet architecture to structure and to manage dynamic autonomous systems, internet service providers and customers
AUTOR(ES)
Luciana Pereira Oliveira
DATA DE PUBLICAÇÃO
2008
RESUMO
In recent years, the problem of dynamic networks has received a great deal of attention from the network research community. This problem consists in providing for the Internet architecture a set of mechanisms, such as addressing, information management and information forwarding, which support mobile information and mobile entities (Autonomous Systems, Internet Service Providers and Customers). Previous work on Internet architectures proposed a way of separating the location (currently IP) and host name, due to a strong association between the IP address and a name. In general, they propose overlay routing to separate such information. Other works believe that this decoupling is not enough to solve mobile problems, since the dynamicity generates many rebinds and control messages. For this reason, they proposed new models to manage the overlay. In this work, we propose a solution called Stable Society which adopts a role based approach. A role is a functional unit that is used to organize the communication. A distinguishing feature of our proposal from the others also based on an overlay approach is that in addition decoupling the name and the location, it also deals with the problems concerning structure and the maintenance of overlay. We define four roles: the messenger which forwards data into society; the guard seen as the most stable entity to forward inter-society messages; the worker responsible for storing information; the leader who structures and manages the overlay. To reducing our scope of implementation during the master research, we considered the network layer as having a messenger role and the guard as having the same stability distinction. This is to study and provide a mechanism that manages the overlay routing. Therefore, as a proof of concept introduced by this proposal, we implemented the leaders and workers which acted independently of the technology access while being fundamental to solve the instability problems in storing and discovering resources in the architecture. As a result, we propose a new algorithm named Stable Society model over Distributed Hash Table (SSDHT). In addition, we compare it to another DHT solution (Chord algorithm). The results show that our proposal performs better, mainly when we increased the instability (the traffic loads, degrees of mobility, and network sizes). For example the level of success discovery was more than 90%
ASSUNTO(S)
arquitetura da internet internet architecture redes dinÃmicas overlay dht algorithms algoritmos dht ciencia da computacao dynamic network overlay
