So i'm in a similar scenario to what you explained, except with a lighting system. We have 4 switches (MS120 and MS350) that have a Lighting Network (Streaming ACN/E1.31) connected across them (VLAN 111) The infrastructure is laid out like this: {Lighting Controller/mcast tx}<-->[Switch 1/IGMP Querier]<--->[Switch 2]<--->[Switch 3]<-Fibre->[Switch 4]<--->{Lighting Device/mcast rx} We created an IGMP Querier on the switch closest to the multicast source, and we can see the multicast traffic on switch 1 and 2, but not switch 3 or 4. We do not have multicast routing enabled for the VLAN, just the IGMP Querier. All the switches have IGMP snooping enabled, and Unknown Multicast Flood turned off. We only have VLAN 111 enabled on the switches that are part of the signal path. Do we need to enable multicast routing for the VLAN across the whole network, or just the 4 involved switches? We don't need to route the multicast traffic across VLAN's.
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