NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
mbolo01
Jun 05, 2026Apprentice
Orbi 37x and Local Network Control Block (224.0.0/24) multicast
Dear all, I have an Orbi setup (RBE371 and 2x RBE370) that is causing me headaches with LAN multicast. One of my music application leverages multicast against 224.0.0.234 for node/companion ...
CrimpOn
Jun 05, 2026Guru - Experienced User
mbolo01 wrote:Host A & B are RPIs or MacOS depending on the tests I carried on.
It appears the test machines have both Ethernet and WiFi network connections, correct?
Bummer that they cannot both be connected with Ethernet to the same Orbi unit (router or satellite)? (not enough Ethernet ports)
If they are both connected with WiFi to the same Orbi unit (router or satellite), does the multicast still fail?
mbolo01
Jun 06, 2026Apprentice
Test machines are not connected to both Ethernet and Wifi at the same time.
I used a Netgear Switch for the Ethernet test (GS108T) to ensure that both nodes were effectively sending/receiving these multicast packets. This switch has IGMP Snooping and Snooping Queriing
When both connected to the same Orbi Unit, multicast to 224.0.0.234 fails.
What is interesting (I just discovered that) is that these multicast packets are received in the Netgear Ethernet Switch that is wired to the RBS.
I have used tcpdump and Wireshark to witness this traffic from both side.
Attached is a drawing of my setup.
- mbolo01Jun 06, 2026Apprentice
.... I have trouble attaching the drawing