How PRTG works with SNMP
How PRTG works with SNMP
For traffic and bandwidth monitoring PRTG Traffic Grapher logs the amount of data flowing in and out of an SNMP (see above) enabled network component. To do this PRTG Traffic Grapher constantly reads the traffic counters (Internet MIB-2) from the device.
To monitor other SNMP values PRTG Traffic Grapher reads the current values from the device using an OID from its own OID library or by using an OID entered by the user.
PRTG Traffic Grapher keeps track of the historic monitoring data in its database