workload measurement: in the Internet `core' 


(background only)
caida/waikato coral+dag oc48mon
first and only OC48 flow monitor worldwide
caida's public software analyzes data without modification

software implemented  
CoralReef, NeTraMet, custom routines (CAIDA)
other custom/enhanced routines by U. of Waikato, others
darpa/nsf/caida members funded

software, data analysis, viz tools all prototypes 
commercial spinoff for the cards (www.endace.co.nz)

but btw backbone core now needs oc192/oc768 monitoring 
there's not yet even such thing as a 24 hour trace for an oc48 link