SNMP in redundant WinCC OA System
From Version 3.20, the redundant SNMP driver can use communication with both redundant agents.
The relevant "<DP>_2" datapoints are automatically created for the internal datapoints
of the second system.
Note: The _SNMPAgent and _SNMPV3Entity datapoints have been separated to facilitate this behavior.
Note: As a fallback option the redundancy behaviour can be reset to the legacy behaviour by
setting the config entry [snmpdrv] useReduPostfix
to "false" if absolutely required. This should however only be
done in strictly necessary cases, as the fwdDpType config.redu entries related to the
datapoints must be removed manually to reach the exact behaviour.
