3com S7906E 参照ガイド
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By default, multicast source port filtering is not enabled.
This command works on both IGMP Snooping–enabled VLANs and VLANs with IGMP enabled on their
VLAN interfaces.
Examples
# Enable source port filtering for multicast data on interfaces Ethernet 2/0/1 through Ethernet 2/0/4.
<Sysname> system-view
[Sysname] igmp-snooping
[Sysname-igmp-snooping] source-deny port ethernet 2/0/1 to ethernet 2/0/4