29 Nov
2002
29 Nov
'02
5:05 p.m.
On Fri, 29 Nov 2002, Stephen Sprunk wrote:
How much of this research is based on marketing maps on the ISPs' web sites, versus actual maps of the networks in question? Most "tier 1" ISPs won't even let their vendors see the latter.
last year we *measured* isp maps as part of a research project called rocketfuel and found that the marketing maps can differ significantly from the real ones quite a bit because of lack-of-detail, outdated-ness, or optimistic-projections. a paper describing the methodology and the maps themselves can be found off: http://www.cs.washington.edu/research/networking/rocketfuel/ -- ratul