H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 239)

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4. Click Apply.
Table 69 Configuration items
Item Description
VLAN ID This field displays the ID of the VLAN to be configured.
IGMP snooping
Enable or disable IGMP snooping in the VLAN.
You can proceed with the subsequent configurations only if Enable is selected
here.
Version
By configuring an IGMP snooping version, you actually configure the versions of
IGMP messages that IGMP snooping can process.
• IGMP snooping version 2 can process IGMPv1 and IGMPv2 messages, but not
IGMPv3 messages, which will be flooded in the VLAN.
• IGMP snooping version 3 can process IGMPv1, IGMPv2, and IGMPv3
messages.
Drop Unknown
Enable or disable the function of dropping unknown multicast packets.
Unknown multicast data refers to multicast data for which no entries exist in the
IGMP snooping forwarding table.
• With the function of dropping unknown multicast data enabled, the switch
drops all the unknown multicast data received.
• With the function of dropping unknown multicast data disabled, the switch
floods unknown multicast data in the VLAN to which the unknown multicast
data belong.
Querier
Enable or disable the IGMP snooping querier function.
On a network without Layer 3 multicast devices, no IGMP querier-related function
can be implemented because a Layer 2 device does not support IGMP. To address
this issue, you can enable IGMP snooping querier on a Layer 2 device so that the
device can generate and maintain multicast forwarding entries at data link layer,
thereby implementing IGMP querier-related functions.
Query interval Configure the IGMP query interval.
General Query Source IP Specify the source IP address of general queries
Special Query Source IP Specify the source IP address of group-specific queries
Configuring IGMP snooping port functions
1. Select Network > IGMP snooping in the navigation tree.
2. Click the Advanced tab to enter the page shown in Figure 201 .