ZyXEL Communications Dimension GS-3012, User Manual, Page: 143 / 259

GS-3012/GS-3012F User’s Guide
Multicast 20-3
Figure 20-2 Multicast Setting
The following table describes the labels in this screen.
Table 20-2 Multicast Setting
LABEL DESCRIPTION
IGMP Snooping Select Active to enable IGMP snooping to forward group multicast traffic only to ports that
are members of that group.
IGMP Filtering Select Active to enable IGMP filtering to control which IGMP groups a subscriber on a port
can join.
Unknown Multicast
Frame Specify the action to perform when the switch receives an unknown multicast frame. Select
Drop to discard the frame(s). Select Flooding to send the frame(s) to all ports.
Port This field displays the port number.
Immed. Leave Select this option to set the switch to remove this port from the multicast tree when an IGMP
version 2 leave message is received on this port.
Select this option if there is only one host connected to this port.
Group Limited Select this option to limit the number of multicast groups this port is allowed to join.
Max Group Num. Enter the number of multicast groups this port is allowed to join. Once a port is registered in
the specified number of multicast groups, any new IGMP join report frame(s) is dropped on
this port.
IGMP Filtering
Profile Select the name of the IGMP filtering profile to use for this port. Otherwise, select Default to
prohibit the port from joining any multicast group.