traffic workload characterization 

passive measurements of Internet data streams
develop techniques of high speed traffic sampling
measure busy OC3, OC12 and OC48 backbone links
CAIDA has the only publically available OC48 backbone IP flow data in the world
note: sprintlabs has private oc48 data
study how user activities produce torrents of bytes
testing TCP models in presence of bursty cross traffic
detection of long running streams
tracking Internet usage patterns
IETF WG developing flow measurement standards 
Nevil Brownlee (CAIDA/U.Auckland) and David Plonka (U.Wisc) co-chairs

visualization (next slides)
continent to continent matrix
breakdown by protocol