On 5 Mar 2009, at 22:02, Rodriguez, Mauricio wrote:
Looking at possibilities for an implementation of usage-based billing, [...] +Techniques --SNMP polling of interface counters to determine 95th percentile traffic levels
+Tools --RTG --MRTG --Cacti
You can be pretty sure that there are probably a lot of billing systems based loosely around the tools mentioned here, and that in their particular environments they are robust enough to be successful. If you go down this route, or a similar route, you need to remember that you MUST update the default RRD storage behaviours so that the most granular data is not aggregated until four or five months after the billing month, otherwise you will find that the averaging causes different results to fall out of your scripts when you look into customer queries on their bill ! Best wishes Andy