I set up SNMP and packet sniffer sensors on my PRTG server for monitoring the bandwith of my network. I set up the polling intervals to 30 seconds. i observe that the total values (input + output) of SNMP sensors are not the same that the values of the packet sniffer.
Sometime the values of the SNMP and packet Sniffer sensors are insignifiant (150 kbits/s), nevertheless sometime the different between the 2 values are enormous (20 000 kbits/s for the SNMP and 7000 kbits/s for the packet sniffer).
Is It a problem of count method that are different for this 2 sensors ?