History Operational Focus Data collection was "after-thought" All started back in 1995 Pre "Looking Glass" Wanted Cisco CLI regex matching I was building statewide networking for Oregon Found that I needed to know how other providers saw my prefixes Randy Bush gave me the first 2 views MAE-EAST, MAE-WEST Critical mass of interesting peers ~ 1998 Service became very popular with many NOCs Large enough data set to interest researchers Pretty pictures kc (et al) drew helped Always get a burst of new peers after she distributes posters at NANOG, IETF, etc