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multicast group. The user
can control when a port membership is removed for an exiting address
in terms of the number and interval of MASQs. If there is no Report message received from this
port during the switch maximum response time, the port on which the MASQ was sent is deleted
from the multicast group. If the deleted port is the last member of the multicast group, the multicast
group is also deleted. The switch will send Done message to the router ports of the VLAN.
In IPv6，Layer 2 switches can use Multicast Listener Discovery (MLD) Snooping to limit the
flooding of multicast traffic by dynamically configuring Layer 2 interfaces so that IPv6 multicast
data is selectively forwarded to a list of ports that want to receive the data. This list is constructed
by snooping IPv6 multicast control packets.
The MLD Snooping function can be implemented on Global Config, VLAN Config, Filter Config,
Port Config, Static Multicast, Querier Config and Packet Statistics pages.
9.2.1 Global Config
To configure the MLD Snooping on the switch, please firstly configure MLD global configuration
and related parameters on this page.
Chose the menu Multicast→MLD Snooping→Global Config to load the following page.
Figure 9-13 Global Config
The following entries are displayed on this screen:
Global Config
MLD Snooping: Enable or disable MLD Snooping function globally.
Report Message
Suppression:
Enable or disable Report Message Suppression function globally.
If this function is enabled, the first Report Message from the
listener will forward to the router ports while the subsequent
Report Message from the group will be suppressed to reduce the
MLD traffic in the network.
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