https://www.paessler.com/Download_PRTG/30_Day_Trial
赞助Check bandwidth consumption, network traffic, error messages of all your routers with PRTG. Choose SNMP, Packet Sniffer or NetFlow/sflow/jFlow according to your router specifications
30 day trial - no limits · All in one dashboard · ISO 9001 Certified · Integrated Ticket System
Types: PRTG Network Monitor, PRTG Enterprise Monitor, PRTG Hosted Monitor