GS-4012F/4024 User’s Guide
Chapter 22 Multicast 146
Figure 64 Multicast: Setting
The following table describes the labels in this screen.
Table 47 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 limit the 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 Forwarding to send the
frame(s) to the destination device.
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 No. Select this option and enter a number to limit 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.
