Effects of spatial aggregation on the characteristics of origin-destination pair traffic in funet

Authors:
Ilmari Juva;Riikka Susitaival;Markus Peuhkuri;Samuli Aalto
Affiliations:
Networking Laboratory, Helsinki University of Technology, Finland;Networking Laboratory, Helsinki University of Technology, Finland;Networking Laboratory, Helsinki University of Technology, Finland;Networking Laboratory, Helsinki University of Technology, Finland
Venue:
NEW2AN'07 Proceedings of the 7th international conference on Next Generation Teletraffic and Wired/Wireless Advanced Networking
Year:
2007

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Abstract

In this paper we analyze measurements from the Finnish University Network (Funet) and study the effect of spatial aggregation on the origin-destination flows. The traffic is divided into OD pairs based on IP addresses, using different prefix lengths to obtain data sets with various aggregation levels. We find that typically the diurnal pattern of the total traffic is followed more closely by the OD pairs as their volume increases, but there are many exceptions. Gaussian assumption holds well for all OD pairs when the aggregation level is high enough, and we find an approximate threshold for OD pair traffic volume after which they tend to be Gaussian. Also the functional mean-variance relation holds better when the aggregation level is higher.