Yes, if you have several VLANs with multicast traffic, then definitely setup should be the following:L3 switch:
Multicast routing enabled
PIM enabled on Vlan L3 interfaces (SVI)
IGMP enabled on Vlan L3 interfaces (SVI)L2 switches:IGMP Snooping enabled on all VLANs with multicast trafficIGMP Snooping should be set to filter unknown multicast by default (on ArubaOS this is enabled by configuration command "igmp filter-unknown-mcast" per each VLAN. Reboot is required.)Please, keep in mind that IGMP version on L3 switch should be the same as IGMP Snooping version on L2 switches. Otherwise IGMP Snooping may incorrectly interpret IGMP messages exchanged between clients and L3 switch and fail to construct multicast traffic distribution table.
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