3Com Baseline 2928 PWR Plus User Manual page 295

Figure 1-11 Enable IGMP snooping globally
Select Enable and click Apply to globally enable IGMP snooping.
# In VLAN 100, enable IGMP snooping and the function of dropping unknown multicast data.
Click the icon corresponding to VLAN 100 to enter its configuration page and perform the
following configurations, as shown in
Figure 1-12 Configure IGMP snooping in the VLAN
Select the Enable radio buttion for IGMP snooping and 2 for Version.
Select the Enable radio buttion for Drop Unknown.
Select the Disable radio button for Querier.
Click Apply to complete the operation.
# Enable the fast leave function for GigabitEthernet 1/0/3.
Click the Advanced tab and perform the following configurations as shown in
Figure 1-12.
1-13
Figure 1-13.