[mrtg] Accounting of top consumers of bandwidth

[Paul C. Williamson]

I have a request for monitoring internet traffic 
usage and performance.  While this didn't seem 
like a big deal it has turned into one.  Does anyone 
currently monitoring the following, where the originator 
is within your network:

Bandwidth per user?
Bandwidth per ip?
Bandwidth per protocol?

I realize the third objective can be achieved with 
flowscan, but I can't find anything for the first or second.  
Basically, we have 4 proposals on the table for providing 
this service, and I want to do it with mrtg/rrdtool, but I'm not 
sure where to start.  Right now, we've got Cisco 2600 
series routers providing our connection to the internet.  
We are considering an upgrade, but I want to make sure 
we get the right gear if possible.  We're leaning towards 
7200 series Cisco routers.

All the other proposals require adding hardware in between 
our internet routers and our ISP.  The price for these 
proposals range from $100/month to $500/month.

Thanks,
Paul


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