Some projects have attempted to incorporate geographical data into their internet maps (for example, to draw locations of routers and nodes on a map of the world), but others are only concerned with representing the more abstract structures of the internet, such as the allocation, structure, and purpose of IP space. Graph theory can be used to better understand maps of the internet and to help choose between the many ways to visualize internet maps. The sizing and layout of the autonomous systems was calculated based on their eigenvector centrality, which is a measure of how central to the network each autonomous system is. In early 2011 Canadian based ISP PEER 1 Hosting created their own Map of the Internet that depicts a graph of 19,869 autonomous system nodes connected by 44,344 connections. Users can add URLs as cubes and re-arrange objects on the map. The "Map of the Internet Project" maps over 4 billion internet locations as cubes in 3D cyberspace. An example of such an effort is the OPTE project, which is attempting to develop a system capable of mapping the internet in a single day. More recent efforts to map the internet have been improved by more sophisticated methods, allowing them to make faster and more sensible maps. The maps produced by this project were based on the layer 3 or IP level connectivity of the Internet (see OSI model), but there are different aspects of internet structure that have also been mapped. Images of some of the first attempts at a large scale map of the internet were produced by the Internet Mapping Project and appeared in Wired magazine.
0 kommentar(er)
