In message <199607092355.AA00621@jotun.EU.net>, Per Gregers Bilse writes:
Yes ... but you shouldn't need anything special for that. We have been doing the same for a long time, using regular IP accounting on the edge routers, which is then summarised over a full routing table. The only discrepancies that occur are if changes in routing occur between the time of accounting and processing, but this tends not to be a problem.
What if the edge router is sitting at MaeEast or some other very busy edge of your network. Knowing traffic patterns to/from the interconnects is very useful for traffic engineering and neccesary if the "attack" you want to trace back goes through an interconnect. I may be wrong, but I was under the impression that flow switching wasn't up for this and regular IP accounting is completely useless in this particular case. Curtis