measurement needs (logistics) routing strategically designed interdomain routing data collection constant, sufficiently large, diverse, and representative set of peers stability across time IGP updates (requires cooperation/release from ISPs) configured software parameters from ISPs, e.g MRAI other implementation details from vendors security anomaly detection, traceback wireless headers, location, signal strength needs further requirements analysis sensor johnh's going to cover macroscopic monitoring [how to do] macroscopic monitoring of DNS, BGP system network telescopes for dos attack tracking correlation need repository support