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Grandstream Networks GWN780 Series User Manual page 30

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IGMP Snooping
Multicast Forward Mode
IGMP Version
Report Suppression
The user can also Enable/Disable IGMP Snooping and IGMP Snooping Querier per VLAN and much more.
VLAN
IGMP Snooping
IGMP Snooping Querier
IGMP Snooping Querier Version
Router Port Auto-Learning
Port Fast Leave
Query Robustness
Query Interval (s)
Query Max Response Interval (s)
Last Member Query Count
Enable or disable GlobaI IGMP Snooping
Set the Multicast Forward Mode.
● MAC-Based: Forward using MAC address.
● IP-Based: Forward using IP address
Select the IGMP Version.
Enable or disable the switch to handle IGMP reports
between router and host, suppressing bandwidth used by
IGMP.
IGMP Snooping Global Settings
IGMP Snooping Edit VLAN
Displays the selected VLAN
Click on the toggle button to enable IGMP Snooping for the selected VLAN.
Click the toggle button to enable the IGMP Snooping Querier.
Select from the drop-down list the IGMP Snooping Querier Version.
Click on the toggle button to learn router port by IGMP query.
Select Enable/Disable Fast Leave feature for the desired port.
Note: If Fast Leave is enabled for a port, the switch will immediately remove this port from the
multicast group upon receiving IGMP leave messages.
Set a number which allows tuning for the expected packet loss on a subnet.
The valid range is 1-7
Set the interval of querier send general query.
It specifies the maximum allowed time before sending a responding report.
Note: The valid range is 5-20 in seconds.
After quering for specified times and still not receiving any response from the subscribed
member, GWN7800 series switches will stop transmitting data to the related GE port(s).
Note: The valid range is 1-7

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