[routing-wg]Measurement data on transit traffic in IP routers?

Hi All, In preparation of a course, I'm looking for reference material (paper, report, talk...) giving real world data on the amount of transit traffic (ie. not locally dropped or added, but passing through to other (backbone) routers) in a "typical" edge router of a core network, esp. ratio of local vs passthrough traffic (is it 30%, 40%...?) -- I don't need absolute figures, just realistic estimates of that ratio. Any help would be highly appreciated. Kind regards, Chris -- Chris Develder, PhD Ghent University - IBBT, Dept. of Information Technology (INTEC), IBCN Gaston Crommenlaan 8, bus 201 BE-9050 Gent, Belgium T: +32 9 3314961 (secr: +32 9 3314900) F: +32 9 3314899 E: chris.develder@intec.ugent.be