DT02, DT20 and DT22 will require a managed switch with IGMP Snooping turned on if a lot of multicast audio (>100Mbps) is used.

An explanation of IGMP Snooping and its function can be found at.

https://en.wikipedia.org/wiki/IGMP_snooping

Enabling this feature can relieve the pressure on the network and support better performance.

If you have Multicast activated, possible symptoms that might indicate you need to switch on IGMP snooping might be that the receive port in Dante Controller will go red and you may see unreliable Dante subscriptions or audio dropouts.