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.
ï‚· IGMP snooping version 2 can process IGMPv1 and IGMPv2 messages, but not
IGMPv3 messages, which will be flooded in the VLAN.
ï‚· 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 refer to multicast data for which no entries exist in the IGMP
snooping forwarding table.
ï‚· With the function of dropping unknown multicast data enabled, the switch drops
all the unknown multicast data received.
ï‚· 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.
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