ZyXEL Communications EX5501-B0 User Manual page 194

Table 72 Network Setting > IGMP/MLD (continued)
LABEL DESCRIPTION
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/mldv2)
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
Groups
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 restore your previously saved settings.
Apply Click Apply to save your changes back to the Zyxel Device.
EX5501-B0 / AX7501-B0 / PX7501-B0 User's Guide
Chapter 13 IGMP/MLD
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