Usage-Based Billing for DIA

Jack Carrozzo jack at
Fri Mar 6 01:19:02 UTC 2009

I use netacct - can grab data per cidr block and dumps data into
mysql. I wrote scripts from there to graph in rrdtool, bill on total
usage, or bill on 95th percentile.

-Jack Carrozzo

On Thu, Mar 5, 2009 at 7:41 PM, Jon Lewis <jlewis at> wrote:
> On Thu, 5 Mar 2009, Rodriguez, Mauricio wrote:
>> Looking at possibilities for an implementation of usage-based billing, it
>> seems that the same techniques and tools always come up.  I'm looking for
>> some feedback from the list on experiences with these tools and techniques
>> as well as alternatives that may not be listed here.
>> +Techniques
>>               --Flow data (Netflow, SFlow, etc) analysis to determine 95th
>> percentile traffic levels
>>               --SNMP polling of interface counters to determine 95th
>> percentile traffic levels
> I need to look into this in the near future as well.  The problems I'm aware
> of are:
> 1) we have customers on policed ports, and the interface snmp counters count
> packets before service-policy.  It doesn't seem right to bill for packets we
> dropped :) this isn't useful data for billing purposes.
> 2) our customer agg gear (cisco 3550s) don't do netflow.  Our bigger
> switches the agg gear uplinks to does (6509 sup720-3bxls), but can't handle
> export of full netflow, so we run sampled.  It's still useful for abuse
> tracking, but billing based on it would require some large assumptions and
> multipliers...unlikely to be of use.
> The remaining option I'm aware of is to use monitor sessions to send a copy
> of our traffic to a system/device which would then either generate "full"
> netflow data or just distill the traffic into data xfered per IP/network.
>  What are people using for this on the several hundred mbit/s to a few
> gigabits/s or more range?
> Are there other ways?
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