does interface load-interval affect readings in SNMPv3 ?

[SJ K]

Hi all,

I am using PRTG and SNMPv3 to monitor the traffic on certain interfaces.

I am just wondering, does SNMPv3 poll request read the traffic on the interface "live"  or it is reading the "show int" statistics which is obviously affected by the "load-interval" command ?

In short, do I have to adjust the "load-interval"  of the interface to have a more accurate reading using SNMP ?

Regards,

Noob

[Rolf Fischer · Accepted solution]

Hi,

"load-interval" affects only local load statistics on that interface.

Tools like PRTG typically query MIB-objects like ifInOctets, ifOutOctets, etc. periodically (usually 5 minute intervals by default) and calculate the difference between their current and last values.

You can change the polling interval in PRTG, but keep in mind that this will increase management-traffic and CPU utilization on the MNS and the network devices: https://kb.paessler.com/en/topic/2233-i-wondered-if-i-can-create-a-scanning-interval-less-than-30-seconds-if-so-how-can-i-do-that

HTH
Rolf