routing myths: route table growth 

myth:  route table growth exponential
data: global prefixes grew 3% may->nov 01;  37% in nov00-01 (RouteViews)
myth:  peering richness is growing (see last slide)
data: link/node ratio (average degree), peering richness, and churn did not significantly change in 2000-2001, although lot of changes within ASes.
myth:  small ISPs & multihoming causing growth and/or churn 
data: since 1998, the share of /24s has stayed between 57% and 58.5%
data: number of non-transit multihomed ASes grew from 35% to 37% in 2000-2001, but their share of global routes remained stable at around 30%.
data: new address announcements & deaggregation of existing prefixes were major sources of new prefixes between nov00-may01
data: most routing instability (w/drawal/reannounce events) in late 2001 contributed by a few .gov networks, developing country telecoms, & major backbone ISPs. although backbone providers routes are relatively stable on per-prefix basis.
data: instability caused in part by deaggregated routes leaking out originating AS, and by relatively short-lived transient announcements.  (`small multihomers' contribute negligibly, at least on bi-hourly scale)