Q. What does the 'Allow Periodic Reprobe' option do in the Set Info --> Set Behavior window?

A. The 'Allow Periodic Reprobe' option allows InterMapper to perform a full reprobe of an SNMP device every 12 hours.

When InterMapper queries a device with the SNMP Traffic probe, several SNMP packets are exchanged with the target device to retrieve values for the desired parameters. InterMapper differentiates between two types of parameters: configuration information that changes infrequently and operational information that is updated on every poll. When InterMapper probes a device for the first time, InterMapper queries both configuration and operational parameters. On subsequent polls however, InterMapper only queries the operational parameters to minimize the network bandwidth used in polling. Periodically, every 12 hours, InterMapper re-queries the configuration information to check for changes.