nice write-up! :-) it could be worthwhile to extend the draft by "myths on the how to" (the title suggests a rather complete mythbustering of keeping traffic local in p2p) and analyzing the metrics people are proposing to use to try achieving this objective (ping? throughput? ever seen pings/throughput between two neighboring dsl connections of the same provider? ever compared that to the pings/throughput from the same dsl-host to a host in a well connected organization (like a university)? we did some experiments a while back to see that pings were by a factor of around 100 faster in the second case, now we don't even have to waste energy thinking about using throughput..). can geo location help (if you're lucky and the internetworking reflects the geographical location which it usually does not)? how about selecting the same AS (might sometimes help but there are providers with more than one and other providers sharing the same AS..) or trying IP-prefix matching? there might be good reasons to using some of these metrics (ping, throughput, error-rates) for neighbor selection in p2p (like: 4. increased application performance), keeping the traffic local to isps in the general case is none of them. "collateral failure" could be another nice myth that keeps popping up every now and then, even though you might argue that it's partly dealt with in 7 btw: the structure could be changed to keep the myths in their own section rather than having (1) introduction, (2) definitions, (3) myth 1, (4) myth 2, etc... my 2ct, thorsten Enrico Marocco wrote: > Folks, > > we have just submitted draft-marocco-p2prg-mythbustering-01; main > changes include a new section about caching and some text about possible > impacts on peering. This latter point in particular, i.e. possible > impacts on peering and transit economics, is probably the area where > more investigation is needed; any thoughts/comments are as usual very > welcome. > > The draft is available at > http://tools.ietf.org/html/draft-marocco-p2prg-mythbustering-01 > > > > ------------------------------------------------------------------------ > > _______________________________________________ > p2prg mailing list > p2prg at irtf.org > http://www.irtf.org/mailman/listinfo/p2prg -- Thorsten Strufe Peer-to-Peer Networks Technische Universität Darmstadt http://www.p2p.tu-darmstadt.de/
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