[EMAIL PROTECTED] wrote: > P2P locality seems to me a red herring since most major ISPs: > > * have markets in several countries and geographic areas > * lease physical facilities or IP networks from and to other ISPs; a > very complex mapping > * keep their L2 and L3 network maps and leasing costs very secret > for competitive reasons. > > > Having worked many years for a leading ISP with global reach, I guess > locality would have seemed hard to define to our team. > Unless the p2p protocol measures the latency, bandwidth and the number > of IP hops itself. > I have not seen any protocol that can also measure ownership of links by > ISPs and numbers of hops between ISPs, their $$$ costs and populate the > routing table with such metrics. > Please share if you know such a technology.
Try WireShark. It will get you the timings and bunches of other data from end point to end point. Then tracert will get you path's IPs. From IPs, using whois, you can get IP netblocks and contact info. You can move up the ladder from /8 to /24 and see who are the backbones and who leases from whom. IANA at http://www.iana.org/assignments/ipv4-address-space/ has the /8 blocks listed. Netcraft is also a good place to dig around as is DNStuff, and, oddly enough www.samspade.org can be useful as they sometime bring up older records that help you trace ownership changes. I just did a study on 207/8 and could see how one company had bought out others but often ran under the original, more regional name. It's real messy. However, this will not get you an accurate costs analysis. But you can get some idea of pricing from ads on company sites. Take what a DS3/T3 costs, add whatever number together to make your OC-(whatever) sales price as a gross price. Cost to the large block holder will be less than the sales price if they want to stay in business, so you can get a rough benchmark. All of this will make the network map much clearer, but it's a butt load of work. Old e-mail list with some good info: http://lists.jammed.com/loganalysis/2002/01/0014.html And somewhere out there is a dynamic map that is constantly being refreshed, but, alas, I can't find it at the moment There is also several sites on the net that have the geo-locations (or software to find out about) for many of the netblocks in use. These have a small cost: http://www.tialsoft.com/hwhois/ -$30 http://www.canadiancontent.net/tech/download/IP-Country_mapping_Database.html -$50 http://www.networldmap.com/ -$50 http://www.visualcomplexity.com/vc/project_details.cfm?id=110&index=16&domain=Internet Sorry, don't know of any free, integrated tool, but I suspect playing with a shell script will do a lot of the work in the background to get a basic text file of info. Best, Allen _______________________________________________ p2p-hackers mailing list [email protected] http://lists.zooko.com/mailman/listinfo/p2p-hackers
