ZyXEL Communications XS3800-28, User Manual, Page: 497 / 789

Chapter 66 IGMP
XS3800-28 User’s Guide
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The following table describes the labels in this screen.
66.3.1 DVMRP Configuration Error Messages
You must have IGMP enabled when you enable DVMRP; otherwise you see the screen as in the next
figure.
Figure 393 DVMRP: IGMP Not Set Error
When you disable IGMP, but DVMRP is still active you also see another warning screen.
Figure 394 DVMRP: Unable to Disable IGMP Error
Each IP routing domain DVMRP configuration must be in a different VLAN group; otherwise you see the
Table 259 NETWORKING > IGMP
LABEL DESCRIPTION
Active Enable the switch button to enable IGMP on the Switch.
Note: You cannot enable both IGMP snooping and IGMP at the same time.
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 frames. Select Flooding to send the frames to all ports.
Index This field displays an index number of an entry.
Network This field displays the IP domain configured on the Switch.
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.