We have a hosted environment in our datacenter with an ASA firewall with several zones assigned to different customers. The ASA is monitored with Solarwinds NPM 11.0.1. All customer traffic to the Internet exits a single interface (although each customer may have their own PAT address).
I need to find a way to track how much Internet bandwidth is being used by each customer. I have monitoring on their internal interfaces, but there seems to be no way to tell how much of that internal traffic is going to the Internet. Some customers have multiple zones where some of the traffic goes between these zones and not directly to the Internet. Monitoring of the outside interface is also happening, but all of our customers share this interface.
I was wondering if I created a route map for each customer on the ASA that defines traffic from their zone to the Internet if NPM could somehow monitor the route map for traffic volume. Does anyone know if this is possible? Maybe I need Netflow to do this?
Thanks!