Why do sensors stop recording data when the probe agent loses connectivity? Shouldn't the probe keep polling and store the data locally until connectivity is restored?
In previous tools that I have used, the probe agent will continue to operate even in the absence of connectivity to the core server (i.e. when VPN connectivity to a separate site is down). The probe still issues SNMP requests to all monitored devices configured for the probe and stores the data and will update as soon as connectivity to the core server is restored. This data is not viewable and no alerts will be sent until connectivity to the core install is resolved, but the data is there once connectivity is back.
The goal is to be able to use your reporting functions to provide network health indicators for monthly % downtime so that we can ensure all SLAs are being met and currently if IPSEC tunnel between core and probe, all devices reflect the % downtime.