Consolidated Source Network Report

I've attempted to build a few test reports. and have searched the forums for an answer to this, but haven't had any luck so far, so I apologize if this is answered somewhere I just haven't found.

I'm interested in generating a report showing the total amount of traffic from from a source network. I'd love to be able to have total for to /and/ from the same network.

Example: For all IP groups, how mach total traffic was transfered in from 8.21.196.0/24, and, if possible, how much traffic was transfered to that same network.

I can get as far as showing ranked numbers per IP group sorted by highest numbers to internal IPs, but there are no totals. I would be currently satisfied with /only/ totals, so see how much of a conversation we're having with that network block.

Thanks for any assistance!