BGP Statistics
~ 1,800 organizations own AS numbers
~ 44,000 own address prefixes (NLRI)
~ 75,000 routes in an ISP BGP database
Few AS sets (~100), little address aggregation
Average path length (NAP perspective) is 2.6 hops; 50% of routes = 2 hops, 96% =4 hops
~ 43,000 UPDATEs received each day at a BGP speaker at a NAP (30 peers)