New Devices are Not Listed in the System Setup Assistant

The system setup assistant lists none or not all of the new SMA devices that are connected via Speedwire/Ethernet.

Cause	Corrective measures
The IGMP snooping function is activated in the network switch used in the network. In this case this means that the connection to the SMA device is interrupted due to apparent inactivity, and cannot be subsequently restored.	Deactivate the "IGMP snooping" function in the network switch if this is possible. Otherwise, replace the network switch.
The firewall or IP filter settings are not correct.	Adjust the firewall or IP filter settings (see firewall- or router documentation).