Predicting resource usage and estimation accuracy in an IP flow measurement collection infrastructure
Nick G. Duffield, Carsten Lund · 2003
This paper describes a measurement infrastructure used to collect detailed IP traffic measurements from an IP backbone. Usage, i.e, bytes transmitted, is determined from raw NetFlow records generated by the backbone routers. The amount of raw data is immense. Two types of data sampling in order to manage data volumes: (i) (packet) sampled NetFlow in the routers; (ii) sizedependent sampling of NetFlow records. Furthermore, dropping of NetFlow records in transmission can be regarded as an uncontrolled form of sampling.