ZyXEL Communications GS-4024 - Manual (Page 244)

Chapter 29 IGMP
GS-4012F/4024 User’s Guide
244
The following table describes the labels in this screen.
Table 92 IP Application > IGMP
LABEL DESCRIPTION
Active Select this check box to enable IGMP on the Switch.
Note: You cannot enable both IGMP snooping and IGMP at the same
time. Refer to Section 22.3 on page 172 for more information on
IGMP snooping.
Unknown
Multicast
Frame Specify the action to perform when the Switch receives an unknown multicast frame.
Unknown multicast frames are addressed to multicast groups for which the Switch has
not recorded any group members. Select Drop to discard the frame(s). Select Flooding
to send the frame(s) to all ports.
Index This field displays an index number of an entry.
Network This field displays the IP domain configured on the Switch.
Refer to
Section 7.6 on page 83 for more information on configuring IP domains.
Version Select an IGMP version from the drop-down list box. Choices are IGMP-v1, IGMP-v2,
IGMP-v3 and None.
Generally, if you want to enable IGMP on the Switch, you should choose IGMP-v3 as it
is compatible with older versions. Choose an earlier version of IGMP (IGMP-v2 or
IGMP-v1) if the multicast hosts on your network can not recognize IGMP version 3 or
version 2 Query messages.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses
these changes if it is turned off or loses power, so use the Save link on the top
navigation panel to save your changes to the non-volatile memory when you are done
configuring.
Cancel Click Cancel to begin configuring this screen afresh.