We are also looking to be able to generate capacity planning reports, monthly and year over year. We have Netflow enabled across our environment, I would think this would be quite easy but IP Grouping within netflow does not allow us to select down to the interface level and generate a separate report.
I would also ask the same question above
"Do we have any procedure to generate the reports in NPM or NTA? If yes, please let me know to achieve it. If not, do we have any alternate way to generate the reports?