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Table 91 Network Setting > IGMP/MLD (continued)
LABEL
DESCRIPTION
Query Response
Enter the maximum number of seconds the Zyxel Device can wait for receiving a General Query
Interval
message. Multicast routers use general queries to learn which multicast groups have members.
Last Member
Enter the maximum number of seconds the Zyxel Device can wait for receiving a response to a
Query Interval
Group-Specific Query message. Multicast routers use group-specific queries to learn whether
any member remains in a specific multicast group.
Robustness
Enter the number of times (1~7) the Zyxel Device can resend a packet if packet loss occurs due
Value
to network congestion.
Maximum
Enter a number to limit the number of multicast groups an interface on the Zyxel Device is
Multicast
allowed to join. Once a multicast member is registered in the specified number of multicast
Groups
groups, any new IGMP or MLD join report frames are dropped by the interface.
Maximum
Enter a number to limit the number of multicast data sources (1-24) a multicast group is allowed
Multicast Data
to have.
Sources(for
IGMPv3)
Note: The setting only works for IGMPv3 and MLDv2.
Maximum
Enter a number to limit the number of multicast members a multicast group can have.
Multicast Group
Members
Fast Leave
Select this option to set the Zyxel Device to remove a port from the multicast tree immediately
Enable
(without sending an IGMP or MLD membership query message) once it receives an IGMP or MLD
leave message. This is helpful if a user wants to quickly change a TV channel (multicast group
change) especially for IPTV applications.
LAN to LAN
Select this to enable LAN to LAN IGMP snooping capability.
(Intra LAN)
Multicast Enable
Membership
Select this to have the Zyxel Device add a host to a multicast group immediately once the Zyxel
Join Immediate
Device receives an IGMP or MLD join message.
(IPTV)
Cancel
Click Cancel to exit this screen without saving.
Apply
Click Apply to save your changes back to the Zyxel Device.
Chapter 13 IGMP/MLD
VMG/XMG Series User's Guide
247
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