Previous maps of the internet show the topological structure, the connections between nodes, but “some nodes may not be as important as other nodes,” says Carmi.
Technology Review states this is the first study to look at how the Internet is organized in terms of function, as well as how it’s connected.
“The Internet has a core of 80 or so critical nodes surrounded by an outer shell of 5,000 sparsely connected, isolated nodes that are very much dependent upon this core. Separating the core from the outer shell are approximately 15,000 peer-connected and self-sufficient nodes.
“Take away the core, and an interesting thing happens: about 30 percent of the nodes from the outer shell become completely cut off. But the remaining 70 percent can continue communicating because the middle region has enough peer-connected nodes to bypass the core.
“With the core connected, any node is able to communicate with any other node within about four links. “If the core is removed, it takes about seven or eight links,” says Carmi. It’s a slower trip, but the data still gets there. Carmi believes we should take advantage of these alternate pathways to try to stop the core of the Internet from clogging up.” [pics]
In 1998, Cheswick and Burke posted The Internet Mapping Project. Wired has an article and the layout of the early web’s Scenic Route. In 2006, CIO used the 1998 map [full gif here, pdf here] to ask Who owns the Internet?
In 2003, New Scientist shows the Internet Map as traceroute nodes, the ‘Opte’ project by Barrett Lyon.
merely reposts the question,
“What is this ball of colors?”
How heavy is the Internet?
A “bit” is about 40,000 electrons stored in a capacitor on a chip. Multiply a bit by the total volume of information passing around the net, estimated at 40 petabytes, and voila: 0.2 millionths of an ounce.