ZyXEL Communications Dimension ES-3148, User Manual, Page: 166 / 282

Dimension ES-3148 User’s Guide
164 Chapter 23 Multicast
The following table describes the labels in this screen.
23.4 IGMP Filtering Profile
IGMP filter profiles allow you to control access to IGMP multicast groups. This allows you to
have a service available to a specific IGMP multicast group. You can configure an IGMP filter
profile for an IGMP multicast group that has access to a service (like a SIP server for
example). Within a profile, configure an IGMP filter to specify the multicast IP address
ranges. Then assign the IGMP filter profile to the ports (in the
Multicast Setting screen) that
are allowed to use the service.
Click Advanced Applications and Multicast in the navigation panel. Click the Multicast
Setting link and then the IGMP Filtering Profile link to display the screen as shown.
Table 53 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.
Apply Click Apply to save your changes back to the switch.
Cancel Click Cancel to begin configuring this screen afresh.