Consistently missed scans

If the interface consistently misses scans, it is probably attempting to retrieve values from SNMP devices that are not readily accessible. For example, PI SNMP is collecting data for

• 100 points from device 1

• 100 points from device 2

• 100 points from device 3

• 100 points from device 4

• 100 points from device 5

If device 3 is removed from the network, PI SNMP still polls this device for the associated points, using a default timeout of 3000 milliseconds and 3 retries. Thus, scans will be missed.

To improve this condition, try changing one or more of the startup command parameters:

• decrease the number of retries (-retries)

• decrease the timeout interval (-timeout)

• decrease the number of consecutive timeouts (-cto).

For example,

pisnmp.exe -retries=0 -timeout=1000 -cto=1