PRTG Traffic Grapher - User Manual
SNMP uses UDP
UDP stands for User Datagram Protocol and is the opposite of TCP (Transmission Control Protocol).
User Datagram Protocol (defined by RFC 768) is very low overhead, fast and unreliable while TCP is a very reliable and high overhead protocol.
The unreliability comes in the form of checks and balances whereas if TCP sends something, it waits for an acknowledgment and if it doesn’t hear back, it will resend.
Since logging of devices usually happens within a time period that is cyclic in nature, it’s common sense that you missed the event and you’ll catch it next time… the tradeoff being that the low overhead protocol is simple to use and doesn’t eat up all your bandwidth like TCP based applications going across your WAN.
What is PRTG Traffic Grapher?
PRTG Traffic Grapher is an easy to use Windows software for monitoring and classifying bandwidth usage. It provides system administrators with live readings and long-term usage trends for their network devices. The most common usage is bandwidth usage monitoring, but you can also monitor many other aspects of your network like memory and CPU utilizations.