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Re: Researchers Chart Internet's 'Black Holes'
Hank Nussbacher wrote: > > http://www.wired.com/science/discoveries/news/2007/06/hubble > > "Despite its robust appearance, more than 10 percent of the internet > flickers out like a candle every day, according to researchers who > unveiled on Wednesday an experimental tool that probes the network's > dark places. [..] I couldn't make it up from the slides or the terse text, but I am wondering how much information you can really deduce from BGP, yes it says "they don't have that prefix", but for the rest, even if an ISP has a prefix it doesn't mean that any packet can flow from A to B. Doing traceroutes from a remote site doesn't help as that is just C to A or B. Better "Internet Hubble Telescopes" are therefor: RIPE TTM: http://www.ripe.net/test-traffic/ RIPE RIS: http://www.ripe.net/ris/ TTM is deployed globally around the world and does traceroutes/pings/bgp monitoring and a lot more to see where problems are, you can get a peek at what it can show you at: http://www.switch.ch/network/ttm/ courtesy of SWITCH in Switzerland. If you want an "IPv6 Hubble" you can check up GRH which has provided that kind of information for quite some time already. Greets, Jeroen