ZyXEL Communications XGS4700 Series, Manual

Page: 346 / 485

Chapter 37 IGMP
XGS4700-48F User’s Guide
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37.3 Configuring IGMP
Click IP Application > IGMP in the navigation panel to display the screen as
shown next. Each entry in the table is automatically created when you configure a
new IP domain in the IP Setup screen (refer to
Section 8.6 on page 113 ).
Figure 175 IP Application > IGMP
The following table describes the labels in this screen.
Table 122 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 24.4 on page 234 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 8.6 on page 113 for more information on configuring IP
domains.
Version Select an IGMP version from the drop-down list box. The 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.