D-Link DGS-3620-52P - Page 496

xStack® DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch CLI Reference Guide
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Restrictions
Only Administrator, Operator and Power-User level users can issue this command.
Example
To configure the forwarding mode for IGMP snooping multicast VLAN unmatched packets:
DGS-3620-28SC:admin#config igmp_snooping multicast_vlan forward_unmatched
enable
Command: config igmp_snooping multicast_vlan forward_unmatched enable
Success.
DGS-3620-28SC:admin#