Fusion P2p Qos Network Layer Routing Algorithm

Nowadays, with the rapid development of internet and information technology, and the great improvement of internet bandwidth and computer compability, the application of internet technology in the modern society has become more and more popular, and has gone deep into each aspect of people's life. P2P network technology (also called peer-to-peer network), an important internet technology, which has injected a new energy into the internet information technology with its distributed management, effective routing, strong fault permissibility, and excellent expansibility.From the early centralized P2P network which adopted central directory server structure to structural P2P network based on distributed hash table, and to the half distributed P2P network system, they all can query and locate the target resource effectively and neatly. However, there are several limitations that the P2P network has in technique. The information query technology of P2P network is to locate the target resource on logical lay, but it did nothing in ascertaining a path that the information could be transmitted on the network layer. In this paper, the work that locating target and searching information transmission path can be achieved via the thinking of creating virtual link recursively.In this paper, P2P technology has been applied to the network layer, the principle of domain division has been adopted, and thus the large-scale network system has been divided into several petty domains. The information among domains was transmitted by the super routing node, and the general routing node as well as super node would transmit the inner domain information. The algorithm that building the virtual link recursively in advance was used to seeking the passageway among the domains, also the routing in inner domain is the same algorithm. Through the way of selecting and assigning the bandwidth resource, the algorithm could seek a proper path. So it can solve the problem of load balance of transmitting operations on the physical link.For the recursive building virtual link algorithm that introduced in this paper, through which can the link passageway, also called virtual link which fulfilled the bandwidth requirement be found and be created; and it can ensure that the operation could engross the network bandwidth resource exclusively when the operation were transmitted along the virtual link, at the same time, it will not disturb the transmission of other operations, thereby the Quality of Service of transmitting the operation in internet would be ensured in a certain extent.In this paper, OPNET network simulation software has been used to build the network model, and also the simulation trial which would test the correctness and the validity of the routing algorithm proposed in this paper has been carried through. At last, the author summarized the paper, and prospected the application prospect.