Functions of the multicast-source-deny command on an S series switch

For S series switches excluding the S1700, the multicast-source-deny command filters out multicast data packets in a VLAN on a Layer 2 interface. After this command is executed on a Layer 2 interface, multicast data packets received from the specified VLAN are dropped on the interface. By default, an interface is disabled from filtering out multicast data packets sent from specified VLANs.
This command can filter out only multicast data packets transmitted over UDP. Multicast data packets received from the specified VLAN are not dropped on the interface if they do not contain the UDP protocol field.

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