D-Link DES-3226SM Reference Manual page 197

DES-3226S Layer 2 Fast Ethernet Switch User's Guide
Command Parameters
enable igmp forward_mcrouter_only
snopping
show igmp vlan <vlan_name>
snooping
show router ports vlan <vlan_name>
static
dynamic
Each command is listed, in detail, in the following sections.
IGMP Snooping Commands 197