Vidipac VSW7242, User Manual, Page: 103 / 288

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SSM (Source-Specific Multicast) Range allows the SSM-aware hosts and routers run the SSM service
model for the groups in the address range.
Leave Proxy Enabled
Enable IGMP Leave Proxy. This feature can be used to avoid forwarding unnecessary leave messages to
the router side.
Proxy Enabled
Enable IGMP Proxy. This feature can be used to avoid forwarding unnecessary join and leave messages
to the router side.
Port Related Configuration
Router Port
Specify which ports act as router ports. A router port is a port on the Ethernet switch that leads towards the
Layer 3 multicast device or MLD querier. Normally, the router port is the uplink port to the upper L3 Router
or IGMP Querier. For example in below figure, the green port of the 2 switches are Router port.
If an aggregation member port is selected as a router port, the whole aggregation will act as a router port.
Fast Leave
Enable the fast leave on the port.
Multicast snooping Fast Leave processing allows the switch to remove an interface from the
forwarding-table entry without first sending out group specific queries to the interface. The VLAN interface
is pruned from the multicast tree for the multicast group specified in the original leave message.
Fast-leave processing ensures optimal bandwidth management for all hosts on a switched network, even
when multiple multicast groups are in use simultaneously. This processing applies to IGMP and MLD
Throttling
Enable to limit the number of multicast groups to which a switch port can belong.
Buttons
Save: Click to save changes.
Reset: Click to undo any changes made locally and revert to previously saved values.
4.9.1.2 IGMP Snooping VLAN Configuration
Navigating the IGMP Snooping VLAN Table