note on forward IP topology vs BGP RouteViews data


for july 2001
BGP routeviews: 34 peers, 9.4k ASes, ~100K prefixes
skitter:  17 monitors, 300k dsts, 50K prefixes

to equalize, have to reduce skitter to AS graph:
0) pick one trace per prefix per day
         ignore nodes next to non-responding hops
1) strip IP leaves
2) convert IP -> prefixes
3) strip prefix leaves
4) convert prefix -> AS
5) strip AS leaves