Netflow comes to mind without thinking before I push send. 

On Thu, Feb 27, 2025, 6:41 PM KARIM MEKKAOUI <amekkaoui@mektel.ca> wrote:
Hi Nanog Community
 
We’re looking for a (open source, free, cost effective) tool that is able to analyze traffic flow coming from a couple of router interfaces and display capacity utilisation per IP, top talkers, etc.
 
Thank you in advance for your help
 
KARIM