Scrutinizer
Scrutinizer NetFlow Analyser is a tool that provides incredibly detailed network utilisation information for the users and applications that are causing the most traffic. Using Cisco's NetFlow Technology (an IOS software feature found in an ever increasing number of switches and routers), Scrutinizer is able to retreive the traffic details you need and present them in a detailed graphical view. Scrutinizer uses your existing NetFlow capable routers and switches to report on top applications and top hosts on specific interfaces. It provides details on how much bandwidth is being consumed by each of these variables from protocols per user to users per protocol. Because Scrutinizer uses NetFlow technology on your existing routers, you never have to deploy or maintain probes. Scrutinizer goes beyond simple utilisation graphs and tools like MRTG.