Lars Lystrup Christensen wrote:
> I've got a question about how to solve this scenario:
> 
> The network consists of a few BGP peerings towards the Internet. On the
> inside of the routers, the network consists of several (+100) subnets of
> variable size (4 to 256 IP-addresses).
> 
> The Internet traffic is divided into two kinds of traffic, domestic and
> foreign traffic, used for diverse billing of traffic.
> 
> I need to make reports monthly on ingoing/outgoing traffic for each
> subnet, preferably divided into domestic and foreign traffic. I do know
> I probably have to provide a list of all IP prefixes divided into
> domestic and foreign in some specific format. Which format do I have to
> use?
> 
> Anyone got any solutions on how to crack the nut...?   

I use flowscan [1] with JKFlow [2] to solve this problem. With JKFlow
you can figure out what you need!

Regards,
Gustavo.

[1] http://www.caida.org/tools/utilities/flowscan/

[2] http://users.telenet.be/jurgen.kobierczynski/jkflow/JKFlow.html
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