ZyXEL VMG3927-B50B User Guide - Page 181
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Chapter 13 IGMP/MLD Figure 100 Network Setting > IGMP/MLD The following table describes the labels in this screen. Table 70 Network Setting > IGMP/MLD LABEL DESCRIPTION IGMP/MLD Configuration Default Version Enter the version of IGMP (1~3) and MLD (1~2) that you want the VMG to use on the WAN. Query Interval Enter the number of seconds the VMG sends a query message to hosts to get the group membership information. Query Response Enter the maximum number of seconds the VMG can wait for receiving a General Query Interval message. Multicast routers use general queries to learn which multicast groups have members. Last Member Query Interval Enter the maximum number of seconds the VMG can wait for receiving a response to a GroupSpecific Query message. Multicast routers use group-specific queries to learn whether any member remains in a specific multicast group. Robustness Value Enter the number of times (1~7) the VMG can resend a packet if packet loss occurs due to network congestion. Maximum Multicast Groups Enter a number to limit the number of multicast groups an interface on the VMG is allowed to join. Once a multicast member is registered in the specified number of multicast groups, any new IGMP or MLD join report frames are dropped by the interface. Maximum Multicast Data Sources Enter a number to limit the number of multicast data sources (1-24) a multicast group is allowed to have. Note: The setting only works for IGMPv3 and MLDv2. VMG4927-B50A / VMG9827-B50A / VMG3927-B50B User's Guide 181
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