https://www.paessler.com/Download_PRTG/30_Day_Trial
AdPRTG monitors every aspect of your network: bandwidth, devices, availability, usage etc. Assure network performance & availability. PRTG uses SNMP, WMI, Packet Sniffing, NetFlow.
Test it 100% and for free · Trusted by 500,000 admins
Service catalog: Large IT Infrastructures, Storage Monitoring, Bandwidth Monitoring